hi where could i get some racing reeds from and also a 80cc big bore kit the best i can find is 60cc. i am looking to build a 50mph qt just for a laug. i love my qt its brilliant but soooo slow. what compression should i be getting as its reading 75psi i think this is very low lol.

if anyone has any idea please feel free to let me know or if you have any experience of performance parts let me know thanks

The ma50 would need more than a big bore, you would also need to look at the crown wheel and pinion as this effects the overall gearing, you can tune the top end of the motor but it will do you no good if the gearing is to low

best place for performance parts for that bike is as follows https://www.treatland.tv/SearchResults.asp?Search=yamaha+qt50

Best place for answers for that bike: http://www.mopedarmy.com/forums/list.php?1