EK CHAIN JT 420SH 11/52 - Standard Rear Sprocket Universal Chain kitRef : EKC03148A / 3067816

Complete transmission kit designed for the street: EK 420SH O-ring chain paired with an 11-tooth front sprocket and a 52-tooth rear sprocket made of steel. Designed for easy replacement of the entire chain/sprocket/crown system and to achieve reliable gearing on your 50cc urban bike.

• Type: EK 420SH chain (O-ring) — pitch 420
• Configuration: 11-tooth sprocket / 52-tooth crown (11/52)
• Number of links: 128 links
• Materials: High-strength steel chain and crown, steel sprocket
• Tensile strength: 8,000 N (suitable for transmissions up to ~30 HP)
• Roller width: 6.35 mm
• Weight: 0.91 kg / 100 links
• Life index: 200 (based on 100 links)

This kit offers durability and ease of installation: the precise manufacturing of the teeth ensures a good grip with the chain, while the O-rings limit lubricant loss for reduced maintenance. Ideal for urban use and light rides, it is particularly suitable for small-displacement bikes like the RIEJU TANGO 50 (2010–2012). Check the exact compatibility with your model before installation and follow the recommended lubrication and tension to maximize the lifespan of the transmission.