Corse race schedule shows pistons to be replaced every 250Km after the first 500!!!
http://www.sigmaperformance.com/2000...hedule-big.jpg On the flip side, I had an R1 run in using the mototune method that lost no RWP well beyond 10K miles with no other mods and would still have been going strong until an organisation that shall remain nameless wrote it off by dropping a trailer on top of it.
The engine went off to go racing.
[Edited on 15-3-2005 by Mr_S]