2006 THUMPSTAR TDX PRO 131 Pit Bike , The big daddy! The Thumpstar with the biggest punch. Aimed at dominating the12 class. Features 12 -14 wheels, exclusive alloy spar frame, verticalrear shock position with piggy back reservoir, Omicron's adjustable USDforks, steel braided brake hose's, new carbon graphic kit, new inlet pipe,131cc engine with high compression piston kit (12.45hp), 24mm carburetor,and a Kitaco inner rotor ignition kit. THIS BIKE IS BUILT IN THE US and israce tack ready. Also avail in a super moto version. All spare parts areavail. Comes with a 2 year warranty.