you can get a dr from italy for about £120 , for the others might be worth asking mark robinson on facebook pages , rs italia scootershop is his gig an he has accounts with all major tuning houses in spaghettiville .nice guy with free advice . an i dont know scootererg , ive a mallosi 166 barrel i was given as the guy lost the piston ,an my latest smallies got a dr125 i was given as when it turned up 1 ring was broke in transit an guy never got around to returning .15 years later was given to me . an the easiest extra oomph is a px 150 barrel , bout £60-65 quid on fleabay . H
if its got wheels n makes a noise I wanna play with it, skateboards included coz "skate-punks rule",
Not meaning to hijack but I also looked at the facebook barrel and I wondered with something like that if it was worth getting a piston with tighter clearances as I understand the dr set up is very rattly.