
JT SPROCKETS Standard Steel Sprocket - 520 (Ref. JTR703.43)
Replace the rear sprocket with a simple and reliable part: this JT Sprockets C49 steel sprocket is designed for 520 transmissions and offers 43 teeth to adjust the gearing or replace a worn part. Intended for roadsters, it fits into a classic final drive to restore a neutral and predictable behaviour of the rear wheel.
A standard replacement part, it is suitable for quick replacement during a transmission service or to modify the gearing according to the rider's needs. Installation and checks must be carried out in accordance with the manufacturer's manual or by a professional.
Examples of compatible models (to be verified according to year and version): Aprilia Tuono 660 (2025), Aprilia Tuono 660 Factory (2025), BMW G 650 X Moto (2007).