EK CHAIN PBR 420SR 12/52 - Standard Rear Sprocket Chain kitRef : EKC04516A / 3070260

EK/PBR 420SR Chain Kit 12/52 – Standard Sprocket

Designed for urban riding and small displacement bikes, this EK/PBR 420SR chain kit combines strength and flexibility in the transmission. The SR series features a specific heat treatment of the plates that enhances wear resistance while maintaining the chain's flexibility over the miles. Ideal for replacing worn sprockets and crowns to regain a responsive and secure transmission in the city.

• Configuration: 12-tooth sprocket / 52-tooth crown (standard crown)
• Pitch: 420
• Number of links: 126
• Crown material: steel
• Color: steel / steel
• Weight: 0.75 kg for 100 links
• Durability index: 200 (reference 100 links)

Easy to install for both DIY enthusiasts and workshop professionals, this kit is aimed at users looking for a reliable part for daily use: commuting, urban rides, and riding on small roads. Regularly maintain the chain (lubrication, correct tension) to maximize its longevity and preserve the health of the sprocket and crown.

Notable compatibility: RIEJU MRX 50 (2009), RIEJU SMX 50 (2006), RIEJU MRX 50 PRO (2006) — check the fit for your model before installation.