Scooter Variator Kit Racing Roller 16x13mm 7g for BT49QT GY6 50cc 139QMB 139QMA 4-Stroke Zubehör

Produktbeschreibung

【Applicable models】This transmission kit may be suitable for BT49QT and other motorcycles equipped with GY6 50cc engines, including 139QMB and 139QMA model 4-stroke engines. 【Competition balls】The product may contain 7 grams of competition balls, which are used to optimize the transmission system and improve acceleration performance and power output. 【Standard Sizes】Balls may come in standard 16x13mm sizes, ensuring a good fit with the derailleur system and easy installation on the motorcycle. 【Improved performance】By installing this transmission kit, it is possible to optimize the gear ratios and improve the acceleration performance of the motorcycle, making it more powerful and flexible. 【Easy to install】This kit may be designed to be easy to install