Polini Racing Shoe Clutch for 125cc – 150cc GY6 Scooters, ATVs, Go KartsThe Polini Maxi Speed Clutch features the most straightforward spring preload adjustment of all our clutches, utilizing easily accessible bolts that run through a captured nut in each spring. This is the only clutch we carry that can be adjusted while installed. If the stock adjustment range doesn??t suit your needs, we carry Polini-specific clutch springs, as regular clutch springs will not work in these.It weighs 925 g. It has an inner brace. The pads measure 48 mm x 21 mm.**