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Description
Bonnell 775 MX Upgrade Rear Wheel | 5 Speed Transmission Electronic Shifting Upgrade Kit5 Speed Transmission & Electronic Shifting Upgrade Kit Unlock the Full Potential of Your Bonnell 775 MX. Let's face it a single speed with a mid drive motor is not the best. To get the most out of a lightweight mid drive, you need proper gearing and an adequate gear spread. This kit delivers exactly that: intuitive shifting, dramatically better efficiency, and noticeably longer range from the same battery. Please allow up to 10 days to build and ship
Unlock the Full Potential of Your Bonnell 775 MX.
Let's face it — a single speed with a mid-drive motor is not the best. To get the most out of a lightweight mid-drive, you need proper gearing and an adequate gear spread. This kit delivers exactly that: intuitive shifting, dramatically better efficiency, and noticeably longer range from the same battery. Please allow up to 10 days to build and ship your order.
Built by Demand
For the last year, we've been inundated with customers requesting a viable transmission upgrade for the Bonnell 775 MX. So we delivered — adapting a similar setup proven on our own HPC Revolution MX. This kit includes everything you need to take your 775 MX from single-speed to a true 5-speed with electronic wireless shifting.
Proper Gear Spread
A real 5-speed range means you can climb harder, cruise faster, and let the motor stay in its efficient sweet spot — instead of compromising on a single ratio that does neither well.
Wireless Electronic Shifting
Custom-programmed OX 5-speed shifter and derailleur. No messy cables, no derailleur tuning headaches — just clean, precise, repeatable shifts at the press of a button.
Hand-Built In-House Wheel
WTB i35 rim, HPC custom 148×12 hub with steel driver, laced with Sapim 12-gauge spokes we cold-roll and cut ourselves. Stronger, truer, and more durable than any off-the-shelf wheel.
CYC 5-Speed CNC Cassette
High-strength CNC cassette engineered specifically for the torque output of the CYC mid-drive. Built to take the abuse a high-power mid-drive throws at it.
E-Bike Specific Chain
Shimano heavy-duty 9-speed e-bike chain — anti-corrosion treatment, reduced chain stretch under load, and engineered for the unique demands of e-bike drivetrains.
Better Efficiency & Range
Proper gearing keeps the motor in its optimal RPM band, which means less wasted energy. Same battery, more miles per charge, and a more intuitive ride from the first pedal stroke.
Adapted From Our Revolution MX
This isn't an experimental package thrown together for the 775 MX. The 5-speed electronic-shift setup is a direct evolution of the drivetrain we've been refining and shipping on our own HPC Revolution MX — battle-tested, dialed in, and proven on the trail.
Specifications
| Spec | Detail |
|---|---|
| Application | Bonnell 775 MX — single-speed to 5-speed conversion |
| Drivetrain | 5-speed, electronic wireless shifting |
| Shifter / Derailleur | OX custom-programmed 5-speed, wireless, strong clutch for chain retention |
| Cassette | CYC 5-speed CNC, high-torque rated |
| Chain | Shimano 9-speed heavy-duty e-bike chain (anti-corrosion) |
| Rear Wheel | Hand-built WTB i35 rim, HPC custom 148×12 hub with steel driver Built In-House |
| Spokes | Sapim 12-gauge, cold-rolled and cut in house |
| Hub Standard | 148×12 Boost, HPC custom with steel driver |
| Recommended Installation | Experienced e-bike mechanic or HPC service shop |
What's Included
- Hand-Built WTB i35 Rear Wheel 12-gauge Sapim spokes (cold-rolled and cut in house), HPC custom 148×12 hub with steel driver. Proudly built in our Simi Valley shop — stronger and more durable than any off-the-shelf wheel.
- CYC 5-Speed CNC Cassette High-quality, incredibly strong. Designed specifically for the torque output of the CYC mid-drive system.
- Shimano Heavy-Duty 9-Speed E-Bike Chain Anti-corrosion treatment, reduced chain stretch under load, and built specifically for the demands of e-bike drivetrains.
- OX Custom-Programmed 5-Speed Wireless Shifter & Derailleur Custom-programmed for 5-speed operation, strong clutch for excellent chain retention, fully wireless — no messy cables to route or tune.
The HPC Difference
Wheels hand-built in our Simi Valley warehouse. Spokes we cold-roll and cut ourselves. Real US customer service from a team that rides what they sell. Questions about fitment or installation on your specific 775 MX? Call us — we've installed this kit and we're happy to walk you through it.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy