Vortex CK5237 Chain and Sprocket Kit GFRA - GoFast Aluminum 520 Kit, 1 Down in the Front Stock Aluminum Rear Fits Suzuki SV650S 99-09 Kit Gearing, Ratio 3.21, Front 14 Rear 45 OE Gearing, Ratio 2.93, Front 15 Rear 44 Kit Components, Front 3270-14, Rear 528AK-45, Chain 520SV3-110