aug 04
near 80 hours with slip on and cam
nearly 30 hours with piston, many many drags, a few dynos.
If you go to trx450r.org in the engine section you can see a list of people that had crank problems. When you get right down to it , you really don't know. Some go after 10 hours, some go after 400 or more. Concidering it's a race bike, if you get 200+ hours on it without breaking it down and doing at least a check, then you're going good. All you can do it put some new bearing in it some time down the road.
It's good that you are doing regular maintanence, something most neglict. If you start seeing metal shaving, then you are having a problem. It can be caught with regular oil changes.
Suzuki hasn't been out long enough to say it doesn't have any problems.
TRX450R...Pulse Charger, 12.25 HH, HotCam S2, KW valves and springs, P&P, UNI filter, airbox outterwears, Woodward fuel screw, Denton stabilizer,ProArmor K/S, Elka Elite longtravel 17" w/dual linkage, Figair airbrushed hood, Holeshot fronts, Razr II's rears, AC Propeg nerfs, +1 1/2 stem, Armidillo skids.
And a very well modded 03 warrior, engine, suspension, etc