EK/JT 420SH 12/52 Chain Kit - Standard Sprocket
Replace your transmission and sprockets in one go with this complete kit designed for urban small displacement bikes and 50cc trails. The EK 420SH O-ring chain, paired with a 12-tooth front sprocket and a 52-tooth rear sprocket made of steel, offers a robust and reliable solution for primary transmission.
- Composition: EK 420SH chain (O-ring), JT steel front sprocket (12 teeth), standard steel rear sprocket (52 teeth), 128 links.
- Materials: high-strength steel for the chain and teeth, steel/steel finish for mechanical stability and controlled wear.
- Performance: pitch 420, roller width 6.35 mm, tensile strength rated at 8,000 N — suitable for engines up to ~30 HP.
- Maintenance: the O-rings retain internal lubrication, but regularly check tension, alignment, and wear of the teeth to maximize lifespan.
- Weight and lifespan: 0.91 kg/100 links; relative lifespan for 100 links: 200 (manufacturer data).
Ideal for MBK X-LIMIT 50 models (2000–2002) and other small urban motorcycles. This kit provides you with the essential components to restore precise and safe transmission, prioritizing durability and compatibility.
