Re: bgf 48/49cc kit?
have two tanks down the new 49cc(41tooth) bgf on my sons bike now. Had to raise the needle clip two posistions but now is running great! He's a big boy, 225 of football player so I didnt expect it to get him moving as fast as mine will (61cc 44 tooth) but mine is 5-6mph faster. Might just be the power to weight ratio is off. I will try a 44 tooth sproket and see if that will let the engine get up to top rpms. Very little four stroking but sure did blow a lot of oil out the first few runs!