Rare C&J MX frame for the XL125/XR185/200 with an XR200 engine, built with a European RTL 250 works HRC trials 70mm cylinder-BIG FINS, center cases machined for larger cylinder, and stroker crank, Powroll stroker crank, with new crank halves & balanced, forged Arias 70mm stroker piston & rings, Big fins welded on head to  match cylinder, flow ported head, larger stainless steel intake and exhaust valves, Beryllium valve guides, H/D Chromoly valve springs & titanium valve keepers, new high-heat valve seals, race cam, new cam sprockets and HD chain and Tensioner guides, H/D race clutch plate kit & H/D clutch springs, Sudco set-up Mikuni 30mm 4-stroke racing carb, Custom exhaust, custom aluminum brake stay, seat mounting brackets, sprocket adaptor, and sidepanels.  1976 Honda CR125 forks, Hubs, and Fox Airshox.  Estimated 29 HP, 24 ft. lb. of torque.