by 124 » Thu Jan 25, 2007 10:37 am
raiders - That's a hard question to answer in finite numbers. I'll say it depends. Depends on how you ride, maintain, and care for your bike. I've seen 250R valvetrains (cause that's really what we are talking about) last 4 yrs and I've seen some only last 4 months. The cylinders/pistons are much more durable and will typically outlast the valvetrain.
When the topend repair is necessary I'll also say it depends. It depends on what work you'll be doing yourself. From a parts perspective; the valvetrain and piston parts cost around $500. The labor for the head repair is around $150-200. The rest of the labor R & R, is dependent on your ability to either repair or smooth talk someone into cheap labor. The standard dealer rate is about $75-85/hr.
70' Honda CT70 (Trail 70; Gold)
16' KX450
16' KX85
12' YZ125