
This part being universal, it may require adaptations
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.
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.