One way aluminium 16T pulley for the middle shaft on the S400.
Serpent is pleased to announce the latest new performance product for the Serpent S400 190mm touring car. The new central axle one-way 16T pulley is perfect for stock racers, where braking is kept to a minimum, and for all racers running on large open tracks. Enabling the front drive train to run free when off power, it enables the racer to carry more speed into the corner. The pulley has been made from hard anodised aluminium and is not only light but also extremely durable.
Source : Serpent