hi paul, am sure jap manufacturers use crank figures. seem to remember a dispute between suzuki & ducati about bhp figures when the TL came out.
ducati claimed you couldnt accuratly account for drivetrain losses when measuring at the crank. (sorry,dont know what they would be but in mcn they claim the R6 puts out an optomistic 120bhp!!)
hope this helps with your discussion!!
russ
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