Rockman 135.9 Freewheel

Description and materials
- New 135.9 freewheel manufactured by Singaporean brand Rockman.
- Exclusive design developed by Rockman allows the use of up to 25% wider than standard pawls, ensuring accurate, firm engagement and superior reliability.
- Each part of this freewheel has been CNC machined to achieve the most precise dimensions.
- Features a sealed bearing that increases driveshell stability, and each pawl has its own individual spring.
- 9 high-strength treated steel pawls, with 3 offset groups of 3 pawls into a 45 teeth ratchet, providing a total of 135 engagement points per revolution.
- The freewheel is sealed on both sides, so it keeps out dirt and water.
- Standard 1.37’’ x 24tpi thread.
 
Compatibility
- This freewheel only fits cranksets with standard 1.37’’ x 24tpi thread.
- Not compatible with splined systems.
- Compatible with both 1/8” and 3/32” chains.
- Can be removed with a standard 4-prong freewheel remover.
 
Dimensions
- Available in 18 teeth version (18T)
- 9 pawls and 135 engagement points (135.9)
- Tooth width: 18mm
- Overall thickness: 2.2mm
 
Finishes
- Black, with white Rockman graphics.
 
Weight
- 170g
 
Additional Information
It is highly recommended to bed in the freewheel for a few hours before trials use, to make sure any excess grease works away from the freewheel and the pawls work correctly.
If you want to speed up the process, just apply some oil between the outer teeth and the centre of the freewheel.
If you don’t bed in the freewheel before trials use, it won’t work correctly and will skip, therefore damaging the pawls and ratchet.
Damage occurred to the freewheel because of inappropriate use will void the guarantee.