variator Polini Hi-Speed for Peugeot 50 4-stroke, SYM 50 4-stroke P.26771

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. Supplied with this kit: Hi-Speed variator complete with drive boss Reinforced counter pressure spring (20kg back pressure) Evo Slider Set of 16x13 4.9g variator rollers Instructions supplied.