Two Wheels Only June 2004 - Honda CBR900RR vs Yamaha R1
 

A used Bike test of the best bikes at the end of the last century.

http://img14.imageshack.us/img14/918...ahaYZF-R11.jpg
http://img14.imageshack.us/img14/158...ahaYZF-R12.jpg
http://img14.imageshack.us/img14/983...ahaYZF-R13.jpg
http://img14.imageshack.us/img14/556...ahaYZF-R14.jpg
http://img14.imageshack.us/img14/322...ahaYZF-R15.jpg
http://img14.imageshack.us/img14/597...ahaYZF-R16.jpg[/img]

Wow, I think our R1 has the same as the U.K.'s...I looooveee that bike.

No the bike is not tuned down in the UK.
The different results i bhp varys depending a lot on the different ways of measuring it (SAE-corrected, DIN, STD & Uncorrected).

For example a friend of mine tested his 1400cc modified Hayabusa with the following results:
SAE = 212,1
DIN = 219,3
STD = 218,2
Ucorrected = 219,1

Plus the fact that Yamaha measured the output on the crankshaft not the backwheel. TWO made their measurments on the backwheel.
But what I find a little intresting is that they got the number at only 9900 rpm. The top bhp output usually is somewhere around 10500 rpm.

Most unmodified R1:s give somewhere around 135-145 bhp on the backwheel.
With a dynojet-kit and a slip-on you should get 140-150 bhp on the backwheel.

The topspeed of an Unmodified R1 is somewhere around 275-285 km/h. That's real speed and not the false speed that the speedometer shows.