Campagnolo 11 Speed Road Bicycle Cassette Lockring Review Posted by GiantPandaisy June 26, 2018 in Drivetrain Components Lock ring for 11 speed cassette For 12 toothfirst position cog Lock ring for 11 speed cassette. For 12 toothfirst position cog Bike Tools & Maintenance Campagnolo Cycling Outdoor Recreation Sports & Outdoors