i have fitted a hebo exhaust to my 2002 gilera dna 50 and now my bike only does 35 wot weight rollers do i need for this pipe please help .

john, September 2007

I had the exact same problem, and as far as i could find out, needed around 4gr rollers, and a tighter cont spring, couldnt tell you if i was informed correctly, because sinse purchasing them i have encountered electrical problems and cant even start the bike now, hope its helpful though.

Joe, October 2007