This OSPW System features a 15-tooth upper and 19-tooth lower pulley wheel setting, for maximum efficiency. The handbuilt OSPW System has two spring tension settings, that allows customised setup based on riding conditions.
The OSPW System optimises the overall efficiency of your drivetrain thanks to the unique design and extremely low friction bearings.
Pulley Wheel Material: Aluminium Cage Marterial: Carbon reinforced PA Only suitable for SRAM Red / Force