We've always wondered how modified old bikes would compare to their newer counterparts, so we decided to find out. We took a modified '98 Yamaha R1 and pitted it against the fuel-injected '03 version, then did the same for a modified '02 and stock '03 Kawasaki ZX-6R.
Check out the dyno graphs and images from the test, and get the full story in the next issue of Sport Rider, on newsstands the first week in August.
Related stories:
2003 Kawasaki ZX-6R information
2003 600s on the dyno
Jamie James Productions R1
2003 600s at the strip