RENTHAL Twinring™ Rear Sprocket - 51 Tooth - Black 1540-520-51GPBK Hyper Drystar Jacket the Youth MX Plus-2 Socks

the Youth MX Plus-2 Socks feature a mesh construction for high levels of breathability with reinforced zones for enhanced rider comfort

and underarms for high levels of breathability

Inner splines are broached to provide maximum spline-to-countershaft contact - this helps distribute driveline forces over the largest possible area

and requiring little or no modification to your original equipment

GP Lite shoulders with dynamic friction shield on shoulder for enhanced abrasion resistance

RENTHAL Twinring™ Rear Sprocket - 51 Tooth - Black 1540-520-51GPBK Hyper Drystar Jacket the Youth MX Plus-2 SocksInner ring is the same high strength Ultralight 7075 T 6 aluminum used for the standard Renthal sprocket Outer ring is electro less nickel coated steel for ultimate durability and is designed with the minimum amount of material to keep weight down The outer ring is expanded at 200C and then fitted over the inner; this interference fit combined with the wave pattern ensures a permanent bond for the life of the chainwheel The flat socket head screws add