RK 1230-1697 4107-159PGX Quick Acceleration Chain and Sprocket Kit Chain and Sprocket Kit - Quick Acceleration - Gold - Yamaha YZF-R1/M '15-'23 Brand_No Toil Adjustment Style Automatic Spring Type

Adjustment Style Automatic Spring Type Single Progressive Rate Material Steel Model 412 Cruiser Series Progressive Spring Rate 2

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RK 1230-1697 4107-159PGX Quick Acceleration Chain and Sprocket Kit Chain and Sprocket Kit - Quick Acceleration - Gold - Yamaha YZF-R1/M '15-'23 Brand_No Toil Adjustment Style Automatic Spring TypeFeatures 520 Quick Acceleration Kit features RK's premium XW ring sealed chain RK's 520 Quick Acceleration Race Kit combines enhanced performance of race gearing and durability of steel components Kit includes premium Driven steel alloy black case hardened front sprocket Geared for quick acceleration Specs Color Finish Gold Front Sprocket Tooth Count 15 Material Steel Chain Type 520 ZXW Master Link Connector Type Rivet Model Quick Acceleration Rear