Rear Sprocket Jitsie Solid BlackThe Jitsie solid rear sprocket combines quality material and precise machining to produce a sprocket with maximum durability and strength. Features:* CNC machined from 7075 T6 aluminium* solid rear sprocket mandatory in FIM regulated events (World , European and national championships, and international events) Bike: Beta Rev Evo 03 25, Gas Gas Pro Racing Raga Factory 02 25, Jotagas 12 19, Montesa 4RT 05 25, Ossa 2015, Scorpa SY SYF SR Twenty 02 25,