In fact in 2005 Suzuki Gsxr 1000 whooped its $#@!!! The 2006-2007 is a lot faster and the 08-09 is the fastest!!! I have 3 friends that have the 04-05 zx10 and its a great bike even by todays standards but it can't beat the newer zx10r's!!! 04-05 guys I know you love your bike and in its day 2003-2004 it was the MAN but its outpowered by 06-09 by 7-8 hp stock for stock!!! The new models have heavy pipes which make the bikes a bit heavier but a full system will solve that!!! Let's move out of La La land guys the 04-05 times in all the mags are slower than the new bikes!! A TRE will make any bike wild and have raw power as I hear some of the Gen1 guys say. Ride a Gen2 or Gen3 with a TRE and I promise some of you 1st Gen guys will upgrade ASAP!!!