RENTHAL Twinring™ Rear Sprocket - 51 Tooth - Black 1120-520-51GPBK Armadillo Short Head Pipe Guard Perfect shape to perfectly fit

Perfect shape to perfectly fit your bike model

High-absorption EVA memory foam for protective padding in high impact areas

Full 4 into 2 into 1 Race System Designed for Stock Rear Wheel Thru 360 Wide Tire

Bike-side programming harness to permanently install on your bike (1 user license mates to single ECU)

Tacky grip print on fingers and palm provide added control

RENTHAL Twinring™ Rear Sprocket - 51 Tooth - Black 1120-520-51GPBK Armadillo Short Head Pipe Guard Perfect shape to perfectly fitInner 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