EK CHAIN 420SR 13/48 Chain Kit - Standard Sprocket
Designed for urban use and small displacement motorcycles, this EK 420SR chain kit offers a 13/48 ratio suitable for 50cc engines. The SR series features heat-treated plates: this treatment optimizes durability while maintaining the chain's flexibility after long hours on the road. The result is a reliable transmission for daily commutes and repeated starts in the city.
- Pitch: 420
- Sprocket: steel (standard) — 48 teeth
- Pinion: 13 teeth
- Number of links: 130 (adjustable by cutting links according to installation)
- Color: steel/steel
- Weight: approximately 0.98 kg for 130 links (0.75 kg / 100 links)
- Relative durability: index 200 (for 100 links)
Easy installation for experienced DIYers, regular maintenance recommended (cleaning and lubrication) to ensure longevity. This kit is particularly suitable for RIEJU SMX 50, MRX 50 PRO, and MRX 50 (2004 - 50cc) models. A robust and pragmatic transmission part for those seeking a reliable and economical solution in an urban environment.
