Brend

Hey people recently bought a dtr 125.. Top speed stops at 50? Man who had it before said he bought it boggy and his local shop said the jet was to high and power value had been tweeked! The bike is fully restricted, with dep pipe on.. Do you think it's possible they put the wrong jet size in? Loses power on high revs? Does anyone know the standard jet size for a 1990 dtr 125? Many thanks brad