Dirt Tricks Zirconium Rear Sprocket 51 Tooth Chromatic Compatible With Honda CRF450X 2019-2021

The Zirconium Rear Sprockets are part of Dirt Tricks' latest sprocket design and are a revolutionary change from traditional sprockets in both weight and color. Dirt Tricks Zirconium Sprockets are extremely lightweight compared to all other twin-ring designs - aluminum on the inside and steel on the outside - and have six times the lifespan of most aluminum sprockets. The new zirconium coating on these sprockets reduces friction up to 50%, gives your bike a trick look, and increases durability