I've wanted a pitbike for quite awhile just to have some fun on and for trail riding. I have a built cr125 for track and trail but it'd be nice to have something that's not as expensive to muck around on and just to have a second bike for when cousins come to town to ride the trails. I was thinking about buying a roller and throwing a yx140 or similar motor in. I've seen a lot of ssr rollers that are in pretty good condition for not to much but how good are they? I'm just under 6' and 170 pounds. The trails where I ride have a lot of sections that are full of large rocks (approximately 1-2 feet wide) and I would prolly be doing some jumping as well. Probably not 20' doubles but if like to know If I wanted to hit one the bike wouldn't break on me. Is ssr a good enough brand? And where is a good place to look for them other than craigslist?