RK Racing Chain

4042-068S

RK Racing Chain 4042-068S Steel Rear Sprocket and 520MXZ4 Chain Steel Race Kit

Sprockets

Fits: Yamaha YZ450F/WR450F 06-09/07-09, 11-13
Steel race kit contains: 13 tooth chromoly front sprocket; 50 tooth steel rear sprocket; and RK 520MXZ4-114 link chain
MXZ4 chains are made for the serious motocross racer looking for the lightest, strongest, non O-ring chain
MXZ4 chains feature chromoly steel construction with seamless rollers and bushings, and oversized special alloy pins for added strength
All components of the MXZ4 chain are heat treated using RK's exclusive HIT (Heat Induction Transfer) process and include a clip type master link

Fits: Yamaha YZ450F/WR450F 06-09/07-09, 11-13. Steel race kit contains: 13 tooth chromoly front sprocket; 50 tooth steel rear sprocket; and RK 520MXZ4-114 link chain. MXZ4 chains are made for the serious motocross racer looking for the lightest, strongest, non O-ring chain. MXZ4 chains feature chromoly steel construction with seamless rollers and bushings, and oversized special alloy pins for added strength. All components of the MXZ4 chain are heat treated using RK's exclusive HIT (Heat Induction Transfer) process and include a clip type master link.

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