EK CHAIN PBR 420SR 11/51 - Standard Rear Sprocket Chain kitRef : EKC03139A / 3067797

This complete kit combines the EK 420SR chain with a PBR front sprocket (11 teeth) and a steel rear sprocket (51 teeth) for a quick and clean restoration of the transmission. Designed for urban use and light off-road riding, it features high-strength steel components suitable for small displacement bikes and mopeds.

• Chain Type: EK 420SR (non O-ring chain)
• Pitch: 420
• Number of Links: 132
• Color: steel / steel
• Sprocket Material: steel
• Weight: 0.75 kg / 100 links
• Relative Lifespan (for 100 links): 200
• Sprocket/Crown Ratio: 11/51

• Ready-to-install kit: chain, sprocket, and crown delivered together for a complete replacement.
• Steel components for good wear resistance and efficient torque transmission.
• Light and flexible 420SR format, suitable for low-power machines and urban commutes.

Manufacturer Reference: Not provided. Common compatibilities: BETA RR 50 (Enduro Sport / Racing / 2017) and similar models in 50 cc — please check the pitch and number of links before ordering.