Yup i am using a TZ250 which puts out approx 80-85hp(if i ever get it finished) without serious mods or factory race kit the y2k motor puts out 92hp in standard form without the race kit parts,its thought the works bikes motors are 100hp+,weight varies we run no set weights (190-210kg). in Australia they can't run lower than 210kg,dunno about the UK,at Assen a superkart was clocked at 160mph+ about 6 years ago,Coulthard drove one and reckoned it was on par with his F1 till about 100mph
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