EK CHAIN Kit 420SR 11/59-134 – standard sprocket
This EK SR chain kit brings together the essential components for transmission: an 11-tooth sprocket, a 59-tooth steel rear sprocket, and a 134-link 420 chain. Designed for urban use and lightweight scooters, it offers a simple and robust solution for replacing the entire sprocket/sprocket/chain setup in a quick intervention.
- Series: SR — heat-treated plates to maintain flexibility even after prolonged use.
- Pitch: 420 (standard chain for 50cc and small displacement engines).
- Configuration: 11/59 - 134 links (11-tooth sprocket / 59-tooth rear sprocket).
- Materials: steel chain (steel/steel finish) and steel sprocket, standard non-sealed assembly (without O-rings).
- Installation: complete kit ready for installation, suitable for regular maintenance interventions.
Practical for owners of DERBI SENDA X‑TREME 50 R (models 2020, 2021, and 2022), this kit makes it easy to get back on the road with EK standard components. Manufacturer reference not provided.
Replace your transmission with a simple, robust set that meets 420 standards — ideal for urban trails and daily rides.
