Shimano SM-RT 66 160mm Disc Brake Rotor Q Bike Assioma is the lightest pedal-based

Assioma is the lightest pedal-based power meter

but it also acts as an amazing friction reducer for suspension parts and reduces dirt adhesion

the Search XR A2 is built to thrive off the beaten path

and a Titanium Nitride coating on the Black models decreases corrosion and further reduces friction

Accuracy: +/- 1%

Shimano SM-RT 66 160mm Disc Brake Rotor Q Bike Assioma is the lightest pedal-basedSHIMANO's SM RT66 6 bolt disc brake rotors deliver consistent stopping power in all riding conditions. The disc brake rotor's reliable anti loosen plate construction makes for quick and secure installation. Larger disc brake rotor option provides consistent brake performance with more power