Driven Front Sprocket 520 15T for Yamaha YZF-R1/YZF-R1M/YZF-R1S

Driven Racing Steel Front Sprocket - 15T Motorcycle Street Bike 1037-520-15T

Driven 1037-520-15T Lightweight Steel Front Sprocket fits Yamaha YZF-R1 15T

Driven Racing Counter Shaft Sprocket - 15-Tooth | 1036-520-15T

Driven Racing Counter Shaft Sprocket - 15-Tooth | 1037-520-15T

Driven Lightweight Steel Front Sprockets 1037-520-15T

Driven Racing 1037-520-15T Lightweight Steel Front Sprocket - 15T (Black)

Driven Racing Counter Shaft Sprocket - 15-Tooth | 1007-520-15T