PBR Steel Standard 577 - 428 Gearbox output pinionRef : PBR00957A / 1077761003

Designed by PBR from experience gained in competition, this standard steel sprocket reference 577 16 18NC is aimed at riders looking for a reliable and robust transmission part. Suitable for setups equipped with a chain pitch of 428, it features 16 teeth and the standard geometry of type 577.

• Material: 18NCD5 steel alloy, competition quality
• Resistance: good corrosion and abrasion resistance
• Performance: designed and machined finish to minimize friction
• Manufacturing: strict process ensuring repeatability and controlled tolerances

This PBR sprocket replaces the original part on compatible 428 transmissions. It is suitable for both Cross and Roadster environments and is aimed at both off-road riders and urban users seeking durability and precision in drive. Examples of compatible motorcycles (to be verified according to year and version): YAMAHA YZ 85 LW BIG WHEELS 19/16 (2026), KAWASAKI Z 125 (2024), MZ 125 SM (2008).

Before installation, check the reference match and the condition of the chain and the rear sprocket to ensure a good compromise between torque and longevity. PBR offers here a simple and robust solution for transmission: a standard steel sprocket, reliable and designed with the demands of competition.