55.5mm HC piston , g2 cam, ported, heavy duty valve springs, 1mm alloy head gasket, inner rotor , lightened oil slinger, KEIKHIN 28mm carby (genuine Keikhin 28mm not like the ones on ebay) custom manifold, uni filter, custom exhaust header pipe, t4 exhaust can,all up shift drum, hydraulic clutch. I had a stroker kit in it but have opted to take it out so i can race in the outlaw class. Even with it removed it still hauls , and is still ridable. At the moment im building a lifan 140 which will have all the same mods as above but a 57mm piston or i could possible use a 58mm and a klx 110 sleeve ,i have got both pistons on there way will see what happens it will be a 150.55cc (57mm) or 155.88 (58mm). As for the reason it should be roll started is it now has bugger all weight left on the crank and as this weight acts as a counter weight to stop crank from kicking back when started, as you would know even with the weight on there these little motors still kick back from time to time so you can imagine when weight is removed. It has more kick back than a crf450 with auto decomp valve removed, if only some one would come up with a decomp leaver this would minamize kick back( i can only hope someone comes up with one as there is a massive market for them). But all in all these mods make it haul, it is one of the fastest pitbikes i have ridden, it keeps up with all my mates KLX's and CRF's and these bikes have had $$$$ spent on them and they still have problems like myself especially the KLX'S. dont let this scare you all off doing similar mods you will love you bike after them and whats the odd case or kicker failure NOTHING
