Polini 2.5 – 4 Gram Roller Tuning Kit 16 x 13 for SYM / KYMCO / Various Malossi & Polini Variators Scooter tuning can often be won or lost in the transmission. This kit cleverly allows you to exchange the weight component of the roller from the outer plastic shell, giving you a huge array of combinations for fine tuning of your transmission. the kit includes x4 different weight sets from 2.5 – 4 gram weight inserts – and remember, you can run combinations in between that of 3 x 3, giving you am incredible amount of tunability. The outer plastic shells can also be purchased seperately when they wear out!
