JT Chain Kit/JT 420HDR 11/59 - Standard Sprocket
Designed for urban riders looking for a simple, robust, and easy-to-install transmission, this JT kit combines the 420HDR chain with an 11-tooth sprocket and a 59-tooth crown (standard). The 420HDR is a reinforced chain, suitable for the daily demands of city riding: frequent starts, stops, and repeated stresses.
- Contents: 420HDR chain, standard sprocket (11t), standard crown (59t).
- Usage: urban orientation — commuting, short and versatile trips.
- Materials & Installation: machined components for precise fit; installation according to the manufacturer's recommended guidelines.
- Maintenance: regular cleaning and lubrication to maximize lifespan and maintain quiet operation.
Before ordering, check the list of components and compatibility with your motorcycle: some vehicles may require a different sprocket or crown. Commonly affected models include: DERBI SENDA X‑TREME 50 R (2020–2022). Manufacturer reference: not provided.
Ideal kit for replacing a worn transmission and restoring a responsive ride in urban environments. Installation by a professional or an experienced DIYer is recommended for proper tension adjustment and clean chain cutting.
