This rear steel sprocket features 39 teeth and is built for use with 520 chain systems. Manufactured from high-quality C45 high carbon steel, it offers a strong, durable solution for a wide range of Yamaha ATVs and motorcycles. Each sprocket is heat-treated, hand-finished, and sandblasted to reduce surface tension, with a black powder-coated finish for enhanced surface integrity. It complies with strict motorcycle industry compound modification standards.

Features

• Made from C45 high carbon steel for strength and durability

• Heat-treated and hand-finished for consistent performance

• Sandblasted to reduce surface tension

• Black powder-coated finish

• Designed to meet or exceed motorcycle industry standards

Specifications

• Tooth Count: 39

• Chain Size: 520

• Material: C45 high carbon steel

• Finish: Black powder coat

• Part Number: SR603-39.STEEL

Cross-Reference OEM Part Numbers

• AT-26039

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