Vortex CK6132 Chain and Sprocket Kit WSS - Warranty Steel Kit, Stock Gearing Fits Yamaha YZF-R6 06-15 Kit Gearing, Ratio 3, Front 15 Rear 45 OE Gearing, Ratio 2.81, Front 16 Rear 45 Kit Components, Front 3660-15, Rear 435CS-45, Chain 525SV3-114