MOOSE RACING Rear Sprocket - 42 Tooth - Beta 1211-BET-42-10 Yzf-R 125 i.e. 2021/2023 Stage 5 system that provides

Stage 5 system that provides significant horsepower and torque gains

85° vertical field of view

dirt and sand

This series bar end can be installed on most hollow bars

Cover is constructed with durable SaddleHyde that resists water and cold-cracking

MOOSE RACING Rear Sprocket - 42 Tooth - Beta 1211-BET-42-10 Yzf-R 125 i.e. 2021/2023 Stage 5 system that providesThe 7075 T651 aluminum we use for these sprockets receives an extra tempering which reduces distortion and provides optimal thickness vs. typically thinner 7075 T6 sprockets 100% machined, no stamping or grinding Optimal tooth thickness results in maximum tooth and chain contact