My 82' 250R has been raced, Ridden everyday for hours untill I got older. Then I took it out only on weekends but we would do 100 miles a weekend at least. It is on it's 2nd topend, 2nd clutch and 3rd set of O-ring chain/sprockets.

Once I got the bugs worked out of my Mojave it's been ok. It's an 01 and the chain/ sprockets are worn out already. Stock tires lasted about 3 months and my 6 ply itp's are down to 50%.

 

I must of put 100,000 km on a yfm80 from 86-95. Then I put 14000KM on a Suzuki300 Kingquad from 95-97 (costed me a lot). Then I also put 24,000km on a 98 KVF400 and now I have 14600km and 766hours on an 02 KVF650. All miles are long hard miles but regular maintance kept em going.