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EXCEPTIONAL POWER & PERFORMANCE

Summit Electric Bike Kit

Read 25 reviews
  • Free Shipping to Lower 48
  • Fits most bikes & adult trikes
  • Flash Sale! $300 Off for a limited time

Fly up the hardest hills and turn heads as you show off your new super powers. The powerful 500W motor provides a consistent cruising speed of 20 mph with a 5-level pedal assist that gives you power with every pedal stroke (“go fast now” throttle also included). The lithium-ion battery will give you 25-40+ miles of range depending on power use and a LCD screen provides real time data on your speed, range, and power.  This is our most powerful conversion kit, with enough torque for the steepest of hills. Fits most bikes and adult trikes. No spandex required.

Original price was: $1,399.Current price is: $1,099.
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  • $100 off your purchase when you buy 2 kits or ebikes with code 2xTheFun
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Specifications

  • Speed20+ mph
  • Range25-50+ miles
  • Power500 Watts
  • Motor48 Volt Front Wheel Drive
  • Battery48 Volt 10 Ah Lithium-Ion
  • ThrottlePedal Assist & Throttle
  • Battery GaugeYes!
  • Battery LockYes!
  • Weight21 lbs
  • Free ShippingYes!
  • Disc Brake CompatibleYes!

Install it like this

Your old bike is your new bike!

Convert your old bike to an electric one in just a few minutes. It's easy, quick and fun. All you need is a Hilltopper kit and a friend to race when you're done!

Components

  • Your wheel is built by hand. Stainless steel spokes are combined with a double wall rim. Extra thick nylon rim tape provides extra protection against flats. A complementary Kenda tire & tube is included to make installation easy (and save you money). All wheels are disc brake and rim brake compatible.

  • At the center of things is a 48V 500 Watt Electric Motor in black. This high torque motor provides fast acceleration and a continuous 20 mph top speed to ensure your bike remains street legal. Hilltopper motors are legendary for their long lifespan, typically outlasting the battery and your bike.

  • Motor is powered by a 48V 10Ah Lithium Ion battery. Range of 25 - 50+ miles depending on how much you pedal and the terrain. Built in a rugged duraplastic case, this battery mounts on your downtube using the water bottle cage mounts. Or on a rear rack or in a basket. Battery has a LED gauge that tells you how much charge is left, plus a lock that keeps the battery safe and turns it on and off. Very energy dense, with lots of range for the battery size.

  • Enjoy a boost every time you pedal. LCD display controls how much power the motor adds to your pedal stroke, while also providing real time data on your speed, battery usage, and miles traveled. Pedal sensor is two pieces, and easily clips on to your cranks. This is a full feature kit that can be installed at home without specialized tools.

  • Activates your super powers and allows you to control how much assist the motor gives you. Fits most handle bars (fits all flat bars, mountain, hybrid, cruisers, etc. may not fit some drop style road bars). Installs by sliding on, you must remove your grips first to install. Very easy to use and long lasting.

  • Charges your 48V battery in 4-5 hours. Optimized for Lithium-Ion chemistry, this charger ensures a long lifespan for your battery.

Frequently asked questions about our kits

  • Electric Bike Kits
  • Installation & Charging Instructions
  • Range of the Battery and Speed
  • Warranty, Returns & Shipping
  • Will It Fit My Bike?

Electric Bike Kits

  • Looking to find out if your kit is compatible with our Universal Replacement Battery set up? Click the link below to view our compatibility cheat sheet!

    Hilltopper URB Compatibility Cheat Sheet

    If you have any further questions, please contact Support@HilltopperBikes.com.

  • Having trouble with your PAS sensor? Wondering if it will fit your bike before you place an order? To dot your i's and dash your t's, click the link below for a detailed over view of our PAS sensor.

    Will the P.A.S. fit my bike?

    Video Instructions - Installing the Pedal Assist System

    Our 36V Horizon kits and our 48V Summit kits both include the PAS as a fully optional component. For complete Horizon installation instructions check the next link:

    Horizon Kit installation instructions ver 2021A

    For complete Summit installation instructions click below:

    Summit Kit installation instructions ver 2021A (1)

  • Yes, all Hilltopper wheels are disc brake compatible with standard spacing and 6-bolt rotor attachment.

    All of our wheels are also rim brake compatible giving you the most options to fit your bike!

     

    For instructions on how to install a rotor on your new Hilltopper, check out the following video:

    https://youtu.be/ZxDQUXOZqps

  • Why are Hilltopper Bikes 1/2 the price of other e-bikes on the market? Because we sell direct to you, the customer. Our mission is to create a sustainable future, two wheels at a time and we do that by making e-bikes affordable for you. We intentionally don't sell through dealers, distributors, or retailers because that way of selling means a higher price tag for you. We build our kits and bike wheels with love and care here in Seattle and sell direct to you, so you won't see the large retail markup that would be present if you were buying from a third party. That way you're always getting the best deal on your electric bike.

  • It depends on how fast you want to go, and how steep the hill.

    The 36v, 350 watt kits and bikes can go 20 mph with minimal pedaling. This is the legal limit in most of the US for e-bikes so it's enough power for most bikes. This is a great power for steeper hills, faster commutes & carrying bigger loads. It's like having two Soul Cycle instructors also pedaling for you.

    The 36v, 250 watt Sprinter kit can go 16 mph with minimal pedaling on flat ground, but they perform best as a boost to your pedaling with pedaling required on hills. Perfect if you are looking for an added boost to your ride at an affordable price. Cuts your commute time by 25%, flattens out that hill by 50% & puts a smile on your face.

    The 48v, 750 watt Summit kit can go 20 mph with minimal pedaling. This is the legal limit in most of the US for e-bikes. The motor could go faster, but it is limited at 20 mph for safety and to remain street legal in the US (unlimited it could go 30+ mph). The 750 watt motor can carry large loads up steep hills and accelerates quickly. Perfect if you are looking to cruise consistently at 20 mph over varied terrain or climb absurdly steep and long hills while hauling groceries. It's more power then you might need. But its a lot of fun and gives you the piece of mind that you can accelerate out of any sticky situation.

  • All Hilltopper electric bikes and kits have a maximum speed of 20 mph. This keeps them street legal and compliant with state laws and city ordinances in the US.

    For choosing a power system, here's what to keep in mind:

    The 36v, 350 watt kits (Horizon) can go 20 mph with minimal pedaling. This is great for steeper hills, faster commutes & carrying bigger loads.

    The 36v, 250 watt kits (Sprinter) can go 15 mph with minimal pedaling on flat ground, but they perform best as a boost to your pedaling with pedaling required on hills. Perfect if you are looking for an added boost to your ride at an affordable price. Cuts your commute time by 25%, gives a boost up hills & puts a smile on your face.

  • There are many different types of bicycles and adult tricycles in the world today, but each Hilltopper conversion kit has been carefully designed to fit as many of these models as possible. All Hilltopper wheels are designed to be compatible with both rim brakes and disc brakes.

    There are a few more factors used to confirm that the Hilltopper will fit your bike. 1) Wheel Size. 2) Hub and Fork spacing. 3) Fork Dropout Type. See FAQ Will It Fit My Bike? for more information.

    • For all returns or warranty claims contact support@hilltopperbikes.com
    • 30-day money back guarantee. Returns of undamaged conversion kits may be issued full refunds less a $50.00 restocking fee. Returns of undamaged complete bikes may be issued full refunds less a $100.00 restocking fee.
    • Warranty only applies to original owner (non-transferable).
    • 1-year standard warranty on all batteries. 2-year standard warranty on all other components.
    • Warranties can be used for an exchange of a component only once.
    • Customer pays return shipping on warrantied component inspections. Please note some battery returns may require special documentation and packaging, and these instances will encounter extra fees. This is in order to correctly comply with lithium battery shipping regulations. For all return shipping we recommend using a local shipping service like FedEx office or the UPS Store.
    • If you have a quality issue with a product please contact support to help diagnose the problem. If a product does not meet our high quality standards, then we will issue you a replacement component or fix the original at no additional cost. Replacement components will only be sent after we have received your returned component and finished an inspection to determine the cause of any problems. Hill Topper Bikes is not responsible for return shipping.
    • Do-It-Yourself modifications, normal wear, and damage due to gross negligence or abuse are not covered by the warranty.

    Please contact support@HilltopperBikes.com to initiate a return.

    Return address:

    Please be sure to include a note with your items that has your name, email address, phone number, order number, and why you are returning it. Without this information, we are unable to process your return.

    Hilltopper Bikes
    Technical Support Team Attn: (Order Number)
    225 S Lucile St.
    Seattle, WA 98108
    USA

Installation & Charging Instructions

  • The 2021+ 48 V Summit HillTopper electric bike conversion kit is our top tier kit. This kit offers the highest amount of power and miles. The downtube battery keeps a sleek look, it has USB to charge your phone, plus a lock to keep your battery safe and secure.  On top of all that we've added a new Pedal Assist Sensor and LCD screen as a bonus feature.

    Here are the basic steps you'll need to follow:

    1. Remove your bike's original front wheel.
    2. Install your new Electric Bike Wheel, being careful to ensure all of the axle hardware is in place.
    3. Affix the battery mount to your bike's water bottle mount or a rear carrier, then set the battery in place and lock it to secure it.
    4. Remove your your handle bar grip. (You can choose right-hand or left, it's totally up to you.)
    5. Install the throttle on the handle bars. (It can be position any way you like, push forward, pull back, right-hand or left. It's dealer's choice.)
    6. Install the LCD screen and keypad on your handlebars. The LCD should be placed in the middle of our handlebars, with the keypad to the left of the screen.
    7. Use the thick black cable to connect the battery to the motor. (Make sure to align the arrows and you'll be all set, no need to worry about the little pins.)
    8. Use one of the thin cable with yellow plugs to connect the battery to the throttle.
    9. Connect the LCD screen to the battery using the black, 6 pin cable.
    10. This one is a bonus; for hands free pedal power, use the other thin cable with a yellow connector to plug in the PAS sensor. Use a zip-tie to attach it to your bike frame just behind the gears at your pedals.
    11. Take the magnet wheel and split it into it's two pieces, then reconnect them around the bottom bracket spindle between the gears and the sensor.

    And that's it, easy!

    Click here for PDF instructions or, better yet, follow this link for a video walkthrough of the installation.

     

  • Having trouble with your PAS sensor? Wondering if it will fit your bike before you place an order? To dot your i's and dash your t's, click the link below for a detailed over view of our PAS sensor.

    Will the P.A.S. fit my bike?

    Video Instructions - Installing the Pedal Assist System

    Our 36V Horizon kits and our 48V Summit kits both include the PAS as a fully optional component. For complete Horizon installation instructions check the next link:

    Horizon Kit installation instructions ver 2021A

    For complete Summit installation instructions click below:

    Summit Kit installation instructions ver 2021A (1)

  • Our variable speed throttle is just one piece of our kits that allows the rider to control the amount of power fed to the motor - kind of like a gas pedal!

    The throttle is a versatile piece that can be installed on your handlebars and adjusted to whatever suits you and your bicycle best. We recommend putting the throttle on the left, placing them between the handlebar grip and the brake/shifter levers. 

    The most common type of handlebars on the market today would be a flat or riser handlebar. Our throttle is specifically made to match these handlebars with its 22.2mm grip diameter.

    While the throttle grip is too small to fit most road bikes, drop bars, and any other handlebars with uncommon geometries, there is a pretty simple workaround - a handle bob (a quick Google search should get you plenty of result) can be attached to any of these handlebars for a quick and easy install.

    Check out our video on how to install the variable speed throttle!

  • The 2021+ 36 V Horizon HillTopper electric bike conversion kit is another step up from our Sprinter kits. This kit offers higher power and more miles. The downtube battery keeps a sleek look, it has USB to charge your phone, plus a lock to keep your battery safe and secure.  On top of all that we've added a new Pedal Assist Sensor as a bonus feature.

    Here are the basic steps you'll need to follow:

    1. Remove your bike's original front wheel.
    2. Install your new Electric Bike Wheel, being careful to ensure all of the axle hardware is in place.
    3. Affix the battery mount to your bike's water bottle mount or a rear carrier, then set the battery in place and lock it to secure it.
    4. Remove your your handle bar grip. (You can choose right-hand or left, it's totally up to you.)
    5. Install the throttle on the handle bars. (It can be position any way you like, push forward, pull back, right-hand or left. It's dealer's choice.)
    6. Use the thick black cable to connect the battery to the motor. (Make sure to align the arrows and you'll be all set, no need to worry about the little pins.)
    7. Use one of the thin cable with yellow plugs to connect the battery to the throttle.
    8. This one is a bonus; for hands free pedal power, use the other thin cable with a yellow connector to plug in the PAS sensor. Use a zip-tie to attach it to your bike frame just behind the gears at your pedals.
    9. Take the magnet wheel and split it into it's two pieces, then reconnect them around the bottom bracket spindle between the gears and the sensor.

    And that's it, easy!

    Click here for PDF instructions or, better yet, follow this link for a video walkthrough of the installation.

     

  • The 2021 36 V Sprinter Hilltopper electric bike conversion kit is a big step up from our original systems both in tech and performance. The higher voltage offers more power and efficiency while the bottle battery gives you a sleeker look, USB to charge your phone, plus a lock to keep your battery safe and secure.  On top of all that the new throttle offers a bit more control.

    Here are the basic steps you'll need to follow:

    1. Remove your bike's original front wheel.
    2. Install your new Electric Bike Wheel, being careful to ensure all of the axle hardware is in place.
    3. Affix the battery mount to your bike's water bottle mount or a rear carrier, then set the battery in place and lock it to secure it.
    4. Install the throttle on the handle bars. (It can be position any way you like, push forward, pull back, right-hand or left. It's dealer's choice.)
    5. Use the thick black cable to connect the battery to the motor. (Make sure to align the arrows and you'll be all set, not need to worry about the little pins.)
    6. Use the thin cable with yellow plugs to connect the battery to the throttle.

    And that's it, easy!

    Click here for detailed PDF instructions!

     

  • All HillTopper kits come complete with a tire already installed so you can get going quickly. That said, our awesome tires might not be the best fit for you bike or your style.

     

    No problem, swapping out the tire to meet your needs or match your other wheel is super easy. Our rims can fit a wide variety of tires, everything from skinny road tires(25 mm minimum) to big 2.2" mountain tires.

     

    For instructions check out the following video:

    https://youtu.be/izcgolRzoko

  • Yes, all Hilltopper wheels are disc brake compatible with standard spacing and 6-bolt rotor attachment.

    All of our wheels are also rim brake compatible giving you the most options to fit your bike!

     

    For instructions on how to install a rotor on your new Hilltopper, check out the following video:

    https://youtu.be/ZxDQUXOZqps

  • The 36 V HillTopper electric bike conversion kit is a step up from our original systems both in tech and performance. The bigger motor offers more power while the Horizon battery give you more miles on the road and the new throttle offers a bit more control.

    Here are the basic steps you'll need to follow:

    1. Remove your bike's original front wheel.
    2. Install your new Electric Bike Wheel, being careful to ensure all of the axle hardware is in place.
    3. Unlock and remove the battery from the mount(Horizon and Sprinter Bottle Only).
    4. Affix the battery mount to your bike's water bottle mount or a rear carrier, then reattach the battery.
    5. Remove your your handle bar grip. (You can choose right-hand or left, it's totally up to you.)
    6. Install the throttle on the handle bars. (It can be position any way you like, push forward, pull back, right-hand or left. It's dealer's choice.)
    7. Connect it all with the two plugs at the ends of your Cable Set.

    For more detailed instructions, check out the booklet that came with your kit or for digital downloadable PDF, click Here for 2020+ Horizon Kits, click Here for Ranger kits, or click Here for the new 2020+ Sprinter Kit.

     

    Check out the link below for video installation instructions of the 2020 Sprinter kit.

    https://youtu.be/tbC5Icxmk9g

  • The 24 V Hilltopper electric bike conversion kit is our flagship model, the one that stated it all. We've refined it over the years, but the core principle remains the same; Simplicity. And that's exactly what you'll find here. No bells and whistles, just what you need, this keeps you bike clean and installation a breeze.

    There are five simple steps to installation:

    1. Remove your bike's original front wheel.
    2. Install your new Electric Bike Wheel, being careful to ensure all of the axle hardware is in place.
    3. Strap on the Battery Pack where ever you see fit.
    4. Using velcro, place the GripSwitch button on your handle bars where ever comfortable.
    5. Connect it all with the two plugs on your Cable Set.

    For more detailed instructions, check out the booklet that came with your kit or download the PDF by clicking here.

    These basic principles apply to all of our24V kits from 2019 and prior.

  • For information on storing you battery, please hop over to FAQ When Should I Charge My Battery?

     

  • You can charge your Hilltopper whenever you like! All of our batteries are smart batteries with no memory affect, so there is no need to drain it fully before recharging like you would with older battery types like NiCad or others.

    Generally we suggest simply charging it after every ride, or at the end of the day if you are a regular commuter. That way you always know your battery is ready to go when you are.

    If you are putting the bike away for the winter or just know you won't use it for some time, we suggest charging it fully first and storing it in doors. For the absolute best life of your battery we would also suggest plugging it back into the charger every month or so to keep it topped up. Before you ask, no, unfortunately we cannot suggest simply leaving the battery plugged into the charger long term.

  • For all of our electric bikes and conversion kits we've made sure charging is easy as can be. Just a few simple steps:

    1. Grab the charger supplied with your Hill Topper and plug it into the wall. For the best possible performance we recommend plugging directly into the wall, avoiding the use of extension cords and power strips whenever possible.
    2. Once the green light on the charger comes on, go ahead and plug the barrel end into the battery.
    3. When the charger is connected to the battery the light should turn from green to red to indicate that it is filling up the battery.
    4. As soon as the battery is full the light will turn back to green so you know it's done.

    That's it! Follow these steps and you can rest assured you'll be ready to roll!

    Check out our video on how to charge your battery!

Range of the Battery and Speed

  • 36V 2020 Sprinter battery has 10 - 20+ miles of range.

    36V Universal Battery Replacement has 20 - 25+ miles of range.

    36V 2020 Horizon battery has 25 - 50+ miles of range.

    48V Summit battery has 25 - 40+ miles of range.

    Mileage rates are based on a 170 pound rider on a 30 pound bike on a flat paved surface, with no wind, using the motor and not pedaling. Your mileage may vary, though most people get more than advertised mileage. For the best possible mileage we suggest pedaling anytime the motor is engaged.

     

  • All Hilltopper electric bikes and kits have a maximum speed of 20 mph. This keeps them street legal and compliant with state laws and city ordinances in the US.

    For choosing a power system, here's what to keep in mind:

    The 36v, 350 watt kits (Horizon) can go 20 mph with minimal pedaling. This is great for steeper hills, faster commutes & carrying bigger loads.

    The 36v, 250 watt kits (Sprinter) can go 15 mph with minimal pedaling on flat ground, but they perform best as a boost to your pedaling with pedaling required on hills. Perfect if you are looking for an added boost to your ride at an affordable price. Cuts your commute time by 25%, gives a boost up hills & puts a smile on your face.

  • Mileage rates are based on a 170 pound rider on a 30 pound bike on a flat paved surface, with no wind, using the motor and not pedaling. Your mileage may vary, though most people get more than advertised mileage. For the best possible mileage we suggest pedaling anytime the motor is engaged.

     

  • For all of our electric bikes and conversion kits we've made sure charging is easy as can be. Just a few simple steps:

    1. Grab the charger supplied with your Hill Topper and plug it into the wall. For the best possible performance we recommend plugging directly into the wall, avoiding the use of extension cords and power strips whenever possible.
    2. Once the green light on the charger comes on, go ahead and plug the barrel end into the battery.
    3. When the charger is connected to the battery the light should turn from green to red to indicate that it is filling up the battery.
    4. As soon as the battery is full the light will turn back to green so you know it's done.

    That's it! Follow these steps and you can rest assured you'll be ready to roll!

    Check out our video on how to charge your battery!

Warranty, Returns & Shipping

  • Hilltopper kits are hand built in batches by our team of craftspeople, and each kit is rigorously tested before leaving our shop.

    For full kit purchases and any purchases containing a battery, please expect 7 - 14 business days for our team to build, test, and ship your kit.

    For smaller items, such as accessories or components, please expect 1 - 3 business days for our team to process and ship your items.

    For more detailed information, please check the product page of each kit for the latest updates regarding availability or email us at support@hilltopperbikes.com.

  • You read that right, free shipping* on all orders!

    (*Applies only to orders in the contiguous 48 states.)

  • If you are unsatisfied for any reason with any of our products you can return it for a refund up to 30 days after purchase.

    • For new, undamaged items to be returned for refund, shipping is free plus a $50 restocking fee per kit and a $100 restocking fee per bicycle. Please contact support@hilltopperbikes.com or 1 800 805 9053 x 2 to initiate this type of return. While federal regulations prevent us from providing you with a return label, we are more than happy to reimburse you for basic UPS or FedEx ground return shipping (within the 48 contiguous states) if sent back within 30 days of receiving the item. Please contact support@hilltopperbikes.com if you’d like to initiate a return.
    • Customer pays return shipping for warrantied component inspections. Please note some battery returns may require special documentation and packaging, and these instances will encounter extra fees. This is in order to correctly comply with lithium battery shipping regulations. For all return shipping we recommend using a local shipping service like FedEx office or the UPS Store.

    Please contact support@hilltopperbikes.com to initiate a return.

    Return address:

    Please be sure to include a note with your items that has your name, email address, phone number, order number, and why you are returning it. Without this information, we are unable to process your return.

    Hilltopper Bikes
    Technical Support Team Attn: (Order Number)
    225 S Lucile St.
    Seattle, WA 98108
    USA

  • We stand behind the quality of our products:

    • 30 day money back guarantee on all orders. Returns of undamaged conversion kit may be issued a full refund less a $50.00 restocking fee. Returns of undamaged electric bikes may be issued a full refund less a $100.00 restocking fee. For free basic UPS or FedEx Ground shipping (within the 48 contiguous states) on items to be returned for refund, please contact us.
    • Lifetime technical support. Reach out to support@hilltopperbikes.com for help from our team of experts.
    • 1 year extensive warranty on all bikes and conversion kits. See warranty & return policy for details.
    • For all returns or warranty claims contact support@hilltopperbikes.com
    • 30-day money back guarantee. Returns of undamaged conversion kits may be issued full refunds less a $50.00 restocking fee. Returns of undamaged complete bikes may be issued full refunds less a $100.00 restocking fee.
    • Warranty only applies to original owner (non-transferable).
    • 1-year standard warranty on all batteries. 2-year standard warranty on all other components.
    • Warranties can be used for an exchange of a component only once.
    • Customer pays return shipping on warrantied component inspections. Please note some battery returns may require special documentation and packaging, and these instances will encounter extra fees. This is in order to correctly comply with lithium battery shipping regulations. For all return shipping we recommend using a local shipping service like FedEx office or the UPS Store.
    • If you have a quality issue with a product please contact support to help diagnose the problem. If a product does not meet our high quality standards, then we will issue you a replacement component or fix the original at no additional cost. Replacement components will only be sent after we have received your returned component and finished an inspection to determine the cause of any problems. Hill Topper Bikes is not responsible for return shipping.
    • Do-It-Yourself modifications, normal wear, and damage due to gross negligence or abuse are not covered by the warranty.

    Please contact support@HilltopperBikes.com to initiate a return.

    Return address:

    Please be sure to include a note with your items that has your name, email address, phone number, order number, and why you are returning it. Without this information, we are unable to process your return.

    Hilltopper Bikes
    Technical Support Team Attn: (Order Number)
    225 S Lucile St.
    Seattle, WA 98108
    USA

Will It Fit My Bike?

  • Looking to find out if your kit is compatible with our Universal Replacement Battery set up? Click the link below to view our compatibility cheat sheet!

    Hilltopper URB Compatibility Cheat Sheet

    If you have any further questions, please contact Support@HilltopperBikes.com.

  • Having trouble with your PAS sensor? Wondering if it will fit your bike before you place an order? To dot your i's and dash your t's, click the link below for a detailed over view of our PAS sensor.

    Will the P.A.S. fit my bike?

    Video Instructions - Installing the Pedal Assist System

    Our 36V Horizon kits and our 48V Summit kits both include the PAS as a fully optional component. For complete Horizon installation instructions check the next link:

    Horizon Kit installation instructions ver 2021A

    For complete Summit installation instructions click below:

    Summit Kit installation instructions ver 2021A (1)

  • Our variable speed throttle is just one piece of our kits that allows the rider to control the amount of power fed to the motor - kind of like a gas pedal!

    The throttle is a versatile piece that can be installed on your handlebars and adjusted to whatever suits you and your bicycle best. We recommend putting the throttle on the left, placing them between the handlebar grip and the brake/shifter levers. 

    The most common type of handlebars on the market today would be a flat or riser handlebar. Our throttle is specifically made to match these handlebars with its 22.2mm grip diameter.

    While the throttle grip is too small to fit most road bikes, drop bars, and any other handlebars with uncommon geometries, there is a pretty simple workaround - a handle bob (a quick Google search should get you plenty of result) can be attached to any of these handlebars for a quick and easy install.

    Check out our video on how to install the variable speed throttle!

  • All HillTopper kits come complete with a tire already installed so you can get going quickly. That said, our awesome tires might not be the best fit for you bike or your style.

     

    No problem, swapping out the tire to meet your needs or match your other wheel is super easy. Our rims can fit a wide variety of tires, everything from skinny road tires(25 mm minimum) to big 2.2" mountain tires.

     

    For instructions check out the following video:

    https://youtu.be/izcgolRzoko

  • Yes, all Hilltopper wheels are disc brake compatible with standard spacing and 6-bolt rotor attachment.

    All of our wheels are also rim brake compatible giving you the most options to fit your bike!

     

    For instructions on how to install a rotor on your new Hilltopper, check out the following video:

    https://youtu.be/ZxDQUXOZqps

  • There are many different types of bicycles and adult tricycles in the world today, but each Hilltopper conversion kit has been carefully designed to fit as many of these models as possible. All Hilltopper wheels are designed to be compatible with both rim brakes and disc brakes.

    There are a few more factors used to confirm that the Hilltopper will fit your bike. 1) Wheel Size. 2) Hub and Fork spacing. 3) Fork Dropout Type. See FAQ Will It Fit My Bike? for more information.

  • The type of drop out your bike has is very important. The dropout is the place at the end of your fork where the wheel attaches to the rest of the bike.

    For the longest time there was really only one type available; the "open" or "slotted" type. This is the familiar U shape you have likely seen on most every bike you can remember. Your bike must have this type for our electric bike conversion kits to fit. All conversion kit axles have a width of 10mm.

    Another type of dropout that is found on a small number of high-end bikes is the "closed" dropout. This is for use only with "thru-axle" hubs, and our e-bike motors are unfortunately not compatible.

     

  • Our hubs have a 100 mm(or about 3.9 inches) axle, which is standard for most bikes. To confirm that our electric bike hub will fit into the fork on your bike we need to check the spacing of "the fork." The fork is the two metal arms that hold either side of your front wheel. If there is about 3.9" (100mm) the Hill Topper should fit great!

    Since our electric bike motors tend to be a bit taller than the average bike hub, there is another fork spacing consideration to look for. Most bike hubs are only about 2-3" in diameter, but an e-bike motor can be up to 7" tall. As such, we need to ensure that the 4" spacing mentioned above does not diminish too quickly above the dropout. For the best possible fit, that 100mm/4" spacing should be maintained at least 3" above the dropout.

    If you find your measurements fall within the “Maybe” category, the best way to find out if it fits is to simply try and install! Thankfully we offer free and easy returns, so if it doesn’t work out, you can always return the kit! See our “Warranty, Returns & Shipping” section for more details.

  • We offer all of the most common wheel sizes on the market today, including; 700c/29", 27.5", 26", 24", and 20" wheels.

    You can find your wheel size printed on the side of the tire on your existing wheel.

    Please note:

    • We carry 700c/28"/29"(all the same rim diameter - 622mm), 27.5", 26", 24" and 20" wheels.
    • We do not carry 27".
    • No custom options are available at this time.

Accessories

Reviews (25)

4.9 / 5
R.D. Del Castillo

I would like to post a few photos but I don’t know where to do it? Can you help me.

Michael Mobley

I replaced the tire with a no flat and slimed the tubes

Edmund McNeil

perfect setup for our Tandem bike. very smooth hardly and resistance when unit is in the off mode. The bike zooms I think the kit is much lighter than advertised. thats a plus.

Paul Ahart

Comments left above.

John

I love it, but its rather expensive. I went with this particular kit because I put it on a tandem bike for myself and my special needs son. We struggled getting up hills with out the Hilltopper. The Hilltopper does exactly what the name says! It help us easily top any hills we encounter! It has made a huge difference in the distance we travel and the route we can take. Not being able to compare it to the less expensive kits makes it harder to really rate. The only negative that I encountered is expense. This “upgrade” cost more than the bike I put it on.

Stephen B.

Easy to install. Works great. I love the pedal assist feature.

Steve Smith

I did a hill test on my commuter route with the Summit. It worked great. Having PSA and the throttle really helps with my 12 mile commute from work.