Designed for urban use, the EK/PBR 420SR 12/47 chain kit combines a 420 SR chain and a standard steel sprocket to effectively replace your transmission. The SR series benefits from a specific heat treatment of the plates, aimed at improving durability and wear resistance while maintaining good flexibility during riding.
- Type: 420SR chain kit (chain + sprocket + rear sprocket)
- Sprocket / Rear Sprocket: 12 / 47 teeth
- Number of links: 126
- Pitch: 420
- Rear Sprocket Material: Steel
- Color: Steel / Steel
- Weight (indicative): 0.75 kg for 100 links
- Relative lifespan: 200 (for 100 links, manufacturer value)
- Manufacturer reference: Not provided
This kit is particularly suitable for mopeds and small displacement bikes oriented towards city use. Before installation, check the tension, alignment, and condition of the seals; regular lubrication extends the lifespan of the chain. Compatibility examples: RIEJU RS2 50 MATRIX PRO (2010), RIEJU RS2 50 NAKED (2009), RIEJU NKD 50 (2007).
