EK/PBR 420SR 12/51 chain kit from EK CHAIN: a complete kit designed for small displacement transmission and urban use. The SR series features a design that maintains chain flexibility even after prolonged use. The chain plates benefit from a specialized heat treatment aimed at enhancing their durability and wear resistance.
- Type: 420SR chain kit (sprocket 12 / crown 51)
- Number of links: 132
- Pitch: 420
- Color: Steel / Steel
- Crown material: Aluminum (ultra-light crown)
- Weight: 0.75 kg for 100 links
- Relative lifespan (for 100 links): 200
This kit is aimed at small displacement riders looking for a complete solution to replace their transmission: chain, sprocket, and crown included. Compatible with 50 cc models such as BETA RRT 50 ENDURO TRACK, RRT 50 ENDURO RACING, and RRT 50 ENDURO (2013 model year). Installation and adjustment are recommended according to manufacturer specifications; check the gear ratio and number of links before installation.
