Motorcycle NT400 NTV650 VT600C NV400 Pinion Gear Fit For NT650 NTV650 VT600C Shadow NV600C VLX600 NT400 NV400 VLX400 VRX400 NTV400; standard 525 pitch front sprocket for motorcycle chain drive system; engine output shaft size machined inner spline outer tooth profile; aligns drive shaft 525 chain ; direct slide on installation without grinding uniform tooth structure distributes chain pulling force evenly; reduces chain jump abrasion during speed acceleration solid blank base; fine tooth polishing craft; smooth tooth surface to lower chain friction loss OEM matched overall outer diameter spline count; consistent tooth thickness to fit standard 525 motorcycle chains tightly