EK CHAIN PBR 420SR 11/47 - Standard Rear Sprocket Chain kitAPRILIA 50 RS 50 - 2003 - 2005Ref : EKC04735A / 3070782

EK/PBR 420SR Chain Kit 11/47 - Standard Sprocket: a chain kit designed for urban use, reliable and easy to maintain. Made by EK CHAIN, this 420SR setup combines a heat-treated chain with a standard 47-tooth steel sprocket and an 11-tooth pinion, providing a robust transmission for small sport and lightweight touring motorcycles.

The SR series benefits from a heat treatment process for the plates that preserves flexibility even after long periods of use, while improving wear resistance. Ideal for riders who commute in the city and seek a durable chain that is easy to install and lubricate.

• Pitch: 420
• Pinion / Sprocket: 11 / 47 (standard sprocket)
• Sprocket Material: steel
• Color: steel / steel
• Relative lifespan (for 100 links): 200
• Weight: 0.75 kg (for 100 links) — total chain weight: 0.93 kg

Compatible with many small displacement motorcycles, this kit is particularly suitable for APRILIA RS 50 (2003–2005). Simple installation, standard maintenance (degreasing, lubrication), and neutral behavior in the city: a sensible choice for those who want a reliable transmission without extravagance.