This is a really good upgrade and value for money. The fins are half size of stock pulley so wind resistance on the crank is halved,size is same as the stock pulley but the face (where the belt slides) is steeper than stock,so when fully closed it pushes the belt higher up to achieve higher top speed.Also has a built in washer/spacer to increase width between the pulleys to allow belt further drop at the front to maximise takeoff speed.
CỬA HÀNG LỚN NHẤT
TẠI NHẬT BẢN
COUPON ĐẶC BIỆT,
GIẢM GIÁ, KHUYẾN MÃI
DỊCH VỤ GIAO HÀNG
NHANH, MIỄN PHÍ