Mid drive kit
From $1,950
Mid drive conversion kit | Up to 2,000W | USA made battery
E-bike conversion kit · USA made battery
High Performance Hub Motor Conversion Kit
$1,999base price
18+ years in business
USA assembled
Hand-built to order
6000W
Top power level, with builds from 750W
110+ miles
Max range with the ~2400Wh battery
7 wheel sizes
From 20 inch to 29 inch, plus 19 and 21 inch motorcycle wheels
Complete conversion kit
Everything you need to go electric
Turn any bike into a high-performance electric machine. Our gearless hub motor kits deliver whisper-quiet power, incredible hill climbing and enough torque to leave ordinary bikes in the dust. Every kit is custom built and includes a USA-made Li-NMC battery.
01
Gearless hub motor
Custom HPC air-cooled brushless motor with aluminum stator, higher-grade laminations for less cogging, and robust 14mm axles for offroad abuse.
02
Li-NMC battery
USA-made Lithium Nickel Manganese Cobalt battery using top-tier cells from Sony, LG, Samsung and Molicel for the highest energy density on the market.
03
Hand-built wheel
Double-walled aluminum rim with Sapim spokes, laced on our Phil Wood spoke machine by builders with 40+ years of experience. Built in California.
04
Diagnostic display
Speed, distance, battery level and efficiency (Wh/mile). Limit power to save battery or make any kit street legal.
05
Controller
Programmable motor controller matched to your power package for smooth, reliable power delivery.
06
Charger and full wiring
Standard 2A charger included. Full wiring harness, throttle, brake levers and all hardware.
Build your kit
Configuration guide
Customize every aspect of your conversion kit. Not sure what to pick? Call us at (818) 734-1600. We have been building these since 2008.
01
Choose your power package
Higher wattage means more power. The 2000W system provides 2.5+ HP on a 52V battery, enough for confident hill climbing. Scale up to the 5000W with its wider stator and neodymium magnets for over 6.7 HP.
- Street-legal 750W through 6000W options
- Custom builds over 5,000W: call to discuss
- Standard bike frames will not hold up past 5,000W
02
Choose your motor type
At the heart of every kit is our custom HPC air-cooled brushless motor. Updated for 2026 with an aluminum stator for better heat transfer and corrosion resistance, plus higher-grade laminations for less cogging torque, easier pedaling and 3 to 4% higher peak efficiency.
ThunderboltHigh speedUp to 45+ mph. Best for speed, flat terrain and commuting.
StrikerHigh torqueUp to 36 mph. Best for hills, trails and heavy loads.
03
Battery and charger
Our 2026 Li-NMC batteries use a Lithium Nickel Manganese Cobalt blend with consistently higher voltage for more speed and range. We use the latest cells from Sony (VTC6), LG (MJ1 / M52VT), Samsung (50S) and Molicel (P65a) for the highest energy density on the market. 200+ mile range batteries are possible, just ask.
8 lbsBattery weight
52 to 78VSystem
100+ miCustom range
2A standard (included)About 5 hours
4A fastAbout 2.5 hours, 2x faster
6A rapidAbout 1.6 hours, 3x faster
Satiator digitalFaster charging, and extends battery life
04
Wheel build
Choose the wheel size that matches your bike. Every wheel is hand-built at our California facility using Sapim spokes, laced on our Phil Wood spoke machine by builders with 40+ years of combined experience. Silver or black spoke options available.
- Please tell us at checkout if you need a V-brake compatible rim
20" to 24"Small wheel builds
26" to 29"Mountain and commuter
19" / 21"Motorcycle wheels
05
Battery mounting
Choose how and where to mount your battery. All options are secure and matched to your power package.
Downtube hard caseClean integrated look, same as our HPC Scout and Titan e-bikes. For packs of 1200Wh or less.
USA frame bagHandmade, waterproof and fire retardant (Nomex IIIA + Kevlar). Lockable, with hardshell sidewalls.
Rear rack and bagClassic bolt-on rack with Topeak bag system.
06
Throttle and freewheel
Choose your preferred throttle style and match the freewheel to your current bike's gearing, from 5-speed to 10-speed.
Half twistMotorcycle style, and the most popular: 95% of builds.
Thumb throttleBest if you have thumb shifters.
Compare systems
Motor and power comparison
| Spec | 2000W | 3000W | 4000W | 5000W |
|---|---|---|---|---|
| Horsepower | 2.5+ HP | 4+ HP | 5+ HP | 6.7+ HP |
| Battery voltage | 52V | 63V | 72V | 72V |
| Thunderbolt speed | 34 mph | 40+ mph | 45+ mph | 50+ mph |
| Striker speed | 27 mph | 32 mph | 35 mph | 38 mph |
| Motor weight | 16 lbs | 16 lbs | 16 lbs | 18 lbs |
| Stator | Standard | Standard | Standard | Wide (+5mm magnets) |
| Best for | All around performance | Hills and trails | Serious riders | Maximum power |
Offroad use only above 750W. All systems above 750W are for offroad use only. Please check your local laws and regulations. Standard bike frames will not hold up past 5,000W, so call us to discuss high-power custom builds.
Warranty: 3 year limited warranty, backed by a USA company. See our terms and conditions for details.
Battery lead time is currently 2 to 3 weeks for manufacturing. Range estimates are a maximum figure based on flat ground, no pedaling, a 170 lb rider and an 18 to 20 mph steady cruise.
Need help choosing?
We build custom kits too
Not sure which power package, battery or wheel size is right? Our team has been building e-bike conversion kits since 2008. Call (818) 734-1600.
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