Polini Hi-Speed Variator Kit for 50cc 4-Stroke Air-Cooled SYM, Peugeot Scooters INCLUDES: Hi-Speed variator complete with drive boss Reinforced counter pressure spring (20kg back pressure) Evo Slider Set of 16×13 6.3g variator rollers COMPATIBILITY: Lance – Cabo 50 4T, Cali 50 4T, Havana 50 4T, PCH 50 4T, PCH Delivery 50 4T, Soho 50 4T SYM – Allo 50 4T, Cello 50 4T, Fiddle 50 4T, Mio 50 4T, Orbit 50 4T, Symphony 50 4T, Symply 50 4T Peugeot – Vivacity 50 4T, Speedfight 50 4T, Kisbee 50 4T Latest variator technology from Polini specially designed for the standard un-tuned 50cc engines. This variator has been developed using all components included to increase acceleration and add a little more top speed as the power transmission is much more direct due to the Polini Evo Slider, a friction minimising pad for the counter contra spring. This set can be used with tuned engines. However, the variator roller weights may need to be adjusted to suit. **