CHAIN ROLLERS helmet Source : Black/Red to Ground

Source : Black/Red to Ground = 210 ohms +/-20%

increases chain longevity

with superb grip in all conditions and even better dry grip that rivals pure sports tires

they are tested in a virtual wind tunnel to improve the aerodynamic coeficient (Cx) and thanks to their taller height

Features like lightening holes in the side plates

CHAIN ROLLERS helmet Source : Black/Red to GroundDesigned as a direct replacement for the OEM design. 237 795001, 237 795002, 237 795006 these chain rollers feature the outer mechanical seal to protect the bearings from dirt and water. All other designs are too narrow to incorporate this design and use triple lip sealed ball bearings for superior dirt exclusion compared to OEM bearings