PBR C45 tempered steel 4671 - 525 45 teeth SprocketRef : PBR01633A / 1151196002

Manufacturer's ref: 4671 45 C45T — PBR C45 steel crown hardened 4671 - 525. Designed for roadsters and touring motorcycles, this PBR crown provides a robust solution for the secondary transmission of machines equipped with a 525 pitch.

CNC machined from C45T steel, the crown benefits from hardening followed by induction tempering in the tooth area. This localized heat treatment hardens the engagement surface while preserving the toughness of the body, limiting wear and maintaining a tooth profile true over the miles. Reinforced version, it is aimed at riders looking for a reliable drive component designed to withstand road stresses.

• Material: C45T steel (hardened and tempered)
• Number of teeth: 45
• Chain pitch: 525
• Type: Crown — reinforced version, CNC machining

Compatibility (examples): BMW F 900 GS ADVENTURE (2026), BMW F 900 GS (2026), BMW S 1000 XR (2025).

An essential wear part, this PBR C45T crown offers an excellent compromise between mechanical strength and engagement consistency — ideal for daily commutes as well as long road trips.