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This rear steel sprocket features 43 teeth and is compatible with 520 chain systems. Constructed from high-strength C45 high carbon steel, it is engineered for durability under demanding conditions. The sprocket undergoes heat treatment, hand finishing, and sandblasting to reduce surface tension, and it is coated in a black powder finish. Designed to meet or exceed rigorous motorcycle industry compound modification standards, it fits a wide variety of Yamaha ATV and motorcycle models.
Features
Manufactured from C45 high carbon steel for strength and durability
Heat-treated and hand-finished for consistent quality
Sandblasted to reduce surface tension
Black powder-coated finish
Meets or exceeds motorcycle industry compound modification standards
Specifications
Tooth Count: 43
Chain Size: 520
Material: C45 high carbon steel
Finish: Black powder coat
Part Number: SR603-43.STEEL
Cross-Reference OEM Part Numbers
AT-26043
Vehicle Fitments
Yamaha YFZ350 Banshee 1989–2006
Yamaha TT600 1996–1997
Yamaha YFZ450 2007–2018
Yamaha YFM250R Raptor 2008–2013
Yamaha YFM250RSP Raptor Special Edition 2008–2011
Yamaha YFM250RSP2 Raptor Special Edition 2 2008–2009
Yamaha YFM350R Raptor 2004–2013
Yamaha YFM350RSE Raptor Special Edition 2005–2007
Yamaha YFM350RSE2 Raptor Special Edition 2 2007
Yamaha YFM350X Warrior 1987–1988
Yamaha YFZ350 T, U Banshee 1987–1988
Yamaha YFZ450 S, T, V, W, X, Y, B, D 2004–2013
Yamaha YFZ450 BB-W Bill Ballance Edition 2007
Yamaha YFZ450 SE-W, X Special Edition 2007–2008
Yamaha YFZ450R Y, Z, A, B, D, E, F, G, H, J 2009–2018
Yamaha YFZ450R-D, F, E, F, G, H, J Special Edition 2013–2018
Yamaha YFZ450X-Z, A18PA/B/C 2010–2011
Yamaha YFM700R Raptor 2006–2019
Yamaha YFM700RSE Raptor Special Edition 2007–2019
Yamaha YFM700RYR-W Raptor GYTR Edition 2007
Yamaha YFM700RSP Raptor 50th Anniversary Edition 2006–2007
Yamaha YFM700RSP Raptor Special Edition 2008
Yamaha YFM700RSP2 Raptor Special Edition 2 2007–2008
Yamaha YFZ450BB Bill Ballance Edition 2006–2007
Yamaha YFZ450LE Limited Edition 2004
Yamaha YFZ450R 2009–2019
Yamaha YFZ450RSE Special Edition 2010–2019
Yamaha XT600E (Lightweight Rear Sprocket) 4PT/4SL 1999–2003
Yamaha XT600E, EC-A, B, D, E, F, G (Lightweight Rear Sprocket)
Yamaha TT600E