my dual start kit from gasbike.net : great price and arrived fast. everything was in good shape when arrived and all parts there. engine starts up first time everytime.everything stays tight and no leaks.the wide 3- piece crank set included did not fit my bike,i use a one piece.my peddals dont work 100%(i jammed the 3 piece into my 1 piece hole,its loose) i need short 1 piece crank or a converter.and i mounted my intake on the right side so my air filter would fit.my engine is gaining speed and power as its broken in.
it takes off like a rocket,and now goes 29mph so far.My engine does not vibrate until around 27-28mph and is not too loud compared to cars on road.it was a week challenge on this $20 bike.i like the tight fit too.if i had a regular bike it would have only took me a few hours to build.