Twinring™ Rear Sprocket - 50 Tooth - Black 5101825-1456 Flexible and unbreakable design that

Flexible and unbreakable design that folds backwards on impact

Fits 1999-2021 GM 1500 trucks

Provides optimum wear protection and extreme thermal and shear stability

Easy to install with no drilling (bolts included)

Includes plug-and-play rocker switch (Part #2135990001)

Twinring™ Rear Sprocket - 50 Tooth - Black 5101825-1456 Flexible and unbreakable design thatInner 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