2006 XTREME Pro Stock 125cc, The foundation for this winner is an entirely new Aluminum Frame with a hydro formed backbone and a new tapered aluminum alloy swing arm. The new frame has revised geometry and increased strength to go with a substantial weight reduction. Equipped with a new free breathing, lightweight stainless steel performance exhaust and new CRF styled plastic with specially extended front and rear fender, the PRO STOCK 125 presents a totally updated and aggressive look for the class. The time proven oil and air cooled SOHC 4 stroke power plant in the PRO STOCK 125 engine breaths through a new cylinder head, large intake and carburetor. But the biggest news in the PRO 125 engine is the completely new and re-engineered Team Cooper SCR. 4 speed transmission. With gear ratios selected through careful computer analysis we have provided the rider with gear ratios that are perfectly spaced. We have eliminated the hole-shot killing drop in engine RPM when shifting from 1st to 2nd gears. Also gone is the power robbing overdrive 4th gear. 2nd and 3rd gears utilize completely redesigned sliding gears and shift dogs for a phenomenal improvement in the durability under tough race conditions. Coupled with new materials, design and vastly improved manufacturing processes the transmission should prove to be a tremendous improvement over all previous designs. To complement the new gear-set we also revised the Shifter Drum and Forks to enhance the new transmission. Equipped with the new huge and aggressive 3.50 x 12 XTREME Pit Pro tire in the rear end will hook up in all conditions, and teamed with the new 2.75 x 14 front wheel and tire that provides directional stability and precise control in all conditions handling has never been so precise or carving corners so easy!