
The PBR standard steel sprocket 4729 - 428 is a transmission part designed for roadsters seeking a robust and reliable rear sprocket. Drawing from PBR's competition expertise, this sprocket combines carefully selected materials and industrial standards to withstand daily road use.
Ideal for replacing the rear sprocket in a chain kit, it is suitable for riders who want a race-adapted original part without modification. Compatible with several recent 125 cc roadsters, it fits notably the BENELLI TORNADO NAKED T 125 (2025), KEEWAY RKF 125 (2023), and BENELLI BN 125 (2025). Before installation, check the exact compatibility with your vehicle (axle, spacing, and number of links).