Moose Racing Rear Sprocket - 42 Tooth - Beta 1211-Bet-42-13

• The 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

Beta -- 250 RR -- (2015, 2017, 2013, 2016, 2018, 2014); Beta -- 300 RR -- (2016, 2015, 2013, 2018, 2014, 2017); Beta -- 400 RR -- (2016, 2013, 2014, 2015); Beta -- 400 RS -- (2013, 2014, 2015); Beta -- 350 RR -- (2014, 2013, 2016, 2015); Beta -- 390 RR -- (2015, 2016); Beta -- 498 RR -- (2014, 2015, 2013, 2016)