PBR Steel Standard 577 - 428 Gearbox output pinionRef : PBR00958A / 1077761004

PBR Standard Steel Sprocket 577 - 428 (Manufacturer Part No: 577 20 18NC)

Designed by PBR based on accumulated experience in competition, this output shaft sprocket is intended for riders who want a reliable drive component for both road and enduro use. Machined from high-quality steel, it offers precise tooth engagement for a secure fit with the 428 chain and smooth torque transmission.

• Material: steel (high-quality 18NCD5 alloy)
• Number of teeth: 20 teeth
• Chain pitch: 428 (compatible with 428 transmissions)
• Type / version: Sprocket 577 — standard version
• Manufacturing: strict process ensuring consistent finish and dimensional stability

The 18NCD5 grade provides good resistance to corrosion and abrasion while minimizing friction between the teeth and the chain. As a standard sprocket, it easily replaces the original component to maintain the transmission geometry and the machine's behavior. Suitable for both Cross and Roadster environments, it is ideal for compact and agile machines — compatibility examples include: YAMAHA YZ 85 LW, KAWASAKI Z 125, MZ 125 SM.

A simple yet crucial part, this PBR sprocket is designed to last in trail, road, or track use, and to facilitate regular maintenance of the transmission.