I wish I was more anal and kept a log of what has been replaced, but off the top of my head, not counting bent, broken or upgraded parts before their time... The bike 2004 XR650L, 28,900 miles -seventh or eight rear tire. -fifth or sixth front. -forth set of rear wheel bearings. -third chain and sprocket set. -soon to be forth set of front pads, third set of rears. -soon to be new rotors front and back. -second chain slider. -second headlight lamp. -third spark plug. -15 oil filters. -60 or so gallons of oil. -air filter oil. How's your list?