PBR Standard C45 Steel 4507 - 520 SprocketRef : PBR00177A / 1075342003

The PBR 4507 crown made of C45 steel is a part designed for demanding riders seeking a robust and reliable transmission for their 520. Designed by PBR, a brand with extensive experience in competition, this standard 42-tooth crown features a discreet black finish that integrates well on both a roadster and a motocross machine.

• Manufacturer reference: 4507 42 C45
• Type: Standard crown – 42 teeth
• Chain pitch: 520
• Material: Steel (C45)
• Design and control derived from PBR's competition experience: strict tolerances and manufacturing processes
• Black finish for good visual integration across all styles
• Intended for both road and off-road use: expected wear resistance and longevity for regular use

Compatible with transmissions equipped with 520, this crown is aimed at riders who want to replace their worn part with an original PBR piece. Examples of compatible models include: GAS GAS SM 700 (2026), KTM 690 SMC R (2026), and TRIUMPH TF 250-X (2026). For the maintenance of your rolling chassis, follow the mounting recommendations and chain tension adjustment as advised by the manufacturer.