Vortex CK6292 Chain and Sprocket Kit HFRS - Hyper Fast Steel 520 Kit, 1 Down in the Front, 2 Up Steel Rear Fits Suzuki GSX-R600 01-03 Kit Gearing, Ratio 3.13, Front 15 Rear 47 OE Gearing, Ratio 2.81, Front 16 Rear 45 Kit Components, Front 3270-15, Rear 526AS-47, Chain 520SV3-110