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Here you go, it's time to get those old rollers replaced, or you've done some modifications and want to get your scoot in tune. Rollers are the way you set the engine speed. Lighter weight raise engine speed, heavier weights lower engine speed. Be careful, higher is not always better as you can rev right past your torque curve and just spin out without any thrust. Too heavy a weight and you will be below your torque curve. These come in 8, 9, 10, 11, 12, 13, 14, and 17g. Please state which weight you want. If you do not pick a weight the most popular weight will be sent.
Fits VIP, Tank, Roketa, Tao Tao, Kymco, Vento, Shanghai Shenke, Schwinn, Tomos, Baron, Tomos, Baotian, Baja, Zongshen, and many more
chinese scooters. For additional images, warranty, and specifications, please follow this link to our tech support page: http://www.scrappydogscooters.com/Tech_Talk_with_Mo_.html