The American firm Group K is a well known company in the pwc scene and its famous for the hop up kits as well as the restorations done to pwc engines. Additionally, it designs and fabricates special parts in order to achieve better engine operation especially to older engine models. The pictures X-2, is a unique example of Group K. It is equipped with a West Coast expansion chamber, a flame arrester adaptor and an aftermarket filter. The restoration and the quality of the craftsmanship are beyond any comment.
