This page is part of the ONYX Maintenance Guide
ONYX RCR Rear Tire Servicing
The rear axle uses a 24mm nut and must be torqued to 80Nm. Proper installation requires cleaning the axle and applying threadlocker to prevent loosening under load.
Tools You’ll Need
- Lift Stand Jack
- Tire Pump
- 24mm Wrench
- Hex Key Set
- Tire Spoon Levers
- Rim Protector
Parts and Torque
- Rear Axle Nut: 24mm / M16 Hex Nut / Torque 80nm
- Rear Axle Locking Nut: 24mm / M16 Hex Lock Nut / Torque 30nm
- Rear Axle Stay Screw: M6-1 x 16mm + M6 Hex Nut / 10mm + 5mm Hex / Torque 12nm
- Rear Brake Caliper Screws: M6 / 5mm Hex / Torque 12nm
Protecting Against Flat Tires
Improving puncture resistance reduces downtime and prevents rim damage.
- Avoid slime sealant (water-based, can promote rim corrosion)
- Avoid tire liners (can shift and affect balance)
- Use 2mm–3mm thick tubes for increased durability
- Use higher quality tires (Michelin, Shinko) for better puncture resistance
Have a Spare Tube Ready
- Keep a spare tube available before attempting repair or replacement
Rim Protection Advice
- Use rim protectors during tire removal to prevent damage to the rim surface
- Proper technique minimizes the need for refinishing or touch-up
Steps for Tire Removal
- Follow the method shown in the video below
- Use multiple tire levers (3–4 recommended) with rim protectors
- Work evenly around the tire to avoid pinching the tube or damaging the rim
Rear Tire Servicing Instructions
Follow these steps to service the rear tire correctly.
Preparation
- Verify all required tools are available
- Power off the bike and remove the battery
- Stabilize the bike using a stand or against a wall
Removing the Rear Wheel
- Loosen axle nuts using a 24mm wrench or socket
- Carefully slide the wheel out, avoiding contact with the brake rotor
Tire Maintenance
- Inspect tire for wear, cracks, or embedded debris
- Fully deflate before removal
- Use tire levers to separate the tire from the rim
- Inspect or replace the inner tube as needed
Installing the Tire
- Install tire and tube carefully, avoiding pinches
- Ensure proper bead seating
- Inflate to 32 PSI
Reattaching the Wheel
- Align axle with dropouts and reinstall the wheel
- Clean axle and hardware using brake cleaner
- Apply 1–2 drops of threadlocker to axle threads
- Torque axle nut to 80nm
- Torque axle locking nut to 30nm
Final Checks
- Spin wheel to confirm smooth rotation and alignment
- Verify brake engagement and clearance
- Test motor operation before riding
Proper servicing ensures consistent performance, reduces wear, and minimizes the risk of failure.