Rat_ranger
Over 1,000 Posts
Well I bought something I wasn't planning on. A Kitaco pro-se 100cc short stroke kit. It takes the bore from 53 to 57mm and reduces the stroke to 39.1 from 45mm. It keeps it at 100cc but with the head and cam should put out 13-14hp at 12-13k rpm. From webike it's a $1200 kit but kitaco had one on ebay for $499. So since a big valve head is almost that much I figured I'd give it a try.