*The store has not been updated recently. You may want to contact the merchant to confirm the availability of the product.
Compression springs supply the pressure to engage the belt and they determine the rate at which the CVT transmission changes from low to high gear. For example a 1000rpm spring will go into a higher gear faster than a 2000rpm spring. Adjusting this spring allows you to tune your transmission to your riding weight, conditions, and level of engine tune.