RENTHAL Twinring™ Rear Sprocket - 51 Tooth - Black 1540-520-51GPBK Hyper Drystar Jacket Inner splines are broached to

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

As for other construction features

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

Mounts independently of perches for versatility and does not interfere with controls

Crew body with over dye heather fleece Front chainstitch Alpinestars embroidery

RENTHAL Twinring™ Rear Sprocket - 51 Tooth - Black 1540-520-51GPBK Hyper Drystar Jacket Inner splines are broached toInner 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