EK/PBR 420SR Chain Kit 13/50 – Standard Sprocket
Designed for small urban motorcycles, this EK CHAIN 420SR chain kit includes a sprocket, standard steel sprocket, and a 420 chain with 138 links. The SR series focuses on durable construction: the plates undergo a specific heat treatment that enhances wear resistance while maintaining good flexibility after prolonged use. The result is a reliable transmission for daily commutes in the city.
- Composition: 13-tooth sprocket / 50-tooth sprocket (steel) / 420 chain - 138 links
- Sprocket Material: steel
- Pitch: 420
- Weight: 0.75 kg for 100 links (reference)
- Life Expectancy Index (reference 100 links): 200
Suitable for urban use and for riders seeking simplicity and robustness. Ideal for BETA RRT 50 MOTARD TRACK, RRT 50 MOTARD RACING, and RRT 50 MOTARD models (2012 - 50 cc). Before installation, check compatibility with your motorcycle (chain length and sprocket alignment) and adhere to regular maintenance: correct tension, lubrication, and link inspection will prolong the lifespan of the transmission.
