RK Standard Kit Yamaha DT125 LC 1 84 87 4 Stroke 2013 YAMAHA YFZ 450 R 230023CRB M 2013 YAMAHA YFZ 450 R SPECIAL EDITION 2WD 2009 Rotational Acceleration Force Protection: Alpinestars patented low friction coating is applied to the inner part of the main EPS liner to reduce the rotational acceleration forces that can result from certain oblique impacts RK chains OE grade chain and sprocket kit Contains: Sprocket Front RK C3039 15 JTF1263 Afam 21200 RK Chain and Sprocket Kit Box RK 428SB 118 Chain Sprocket Rear RK B3261 49 JTR843 Afam 12204 RK 428SB 118 Chain Colour: Black (Standard) Pitch: 428 Length: 118 Sealed: No Range: SB Tensile Lb: 4406 Tensile N: 19600 Type: Standard NS