Motorcycle Drive Pinion Gear GSXR1000 Gixxer Fit For GSXR1000 2009-2016 GSX-R1000; standard 530 pitch front sprocket matched to engine output shaft specification machined inner splines tooth profile; slides onto drive shaft seamlessly meshes tightly with 530 chain without even tooth layout evenly distributes chain tension; effectively reduces chain jump surface abrasion under torque acceleration solid blank material; tooth polishing craft; smooth tooth surface minimizes chain friction loss OEM matched outer diameter spline quantity; consistent tooth thickness ensures stable fit with all standard 530 motorcycle chains