Acerbis 21+ Fantic XEF/09+ Yam WR250F/450F/YZ250F/450F/YZ250FX/450FX Chain Guide/Slider Kit 2.0-Blu

The perfect solution for replacing the high-wear area of your bike's drivetrain. The Acerbis Chain Guide Block easily replaces the entire OEM unit and ensures durability coupled with high resistance to shock and wear from the chain. Two-part construction allows for installation without removing the chain.