Hey everyone,
Can someone explain to me what a "top end rebuild" is and why some bikes require it so often? I've had many bikes, a couple with over 30k and 40k miles and I've never had to do a top end rebuild or seen anywhere in the maintenance manuals that it is required.
What specific parts are needed for a "top end rebuild", is it expensive, and how difficult is it a mechanically inclined person with normal shop tools. It seems like dirt bikes require top end rebuilds quite often, while most sportbikes don't.