The Cat's dry weight is actually 187kg vs the Fazer's 189kg
Power-wise you're the wrong way round, they are virtually the same until the top of the rev-range, where the cat pulls another 7 or 8 ponies. The Fazer makes about 80 @ the back wheel while the cat makes almost 90. The Cat uses downdraught carbs that probably flow better whereas the FZS carbs are more conventional, ramair type airbox system probably gives the top-end extra shunt too.
The aerodynamics of a full fairing give the cat another 10mph over the FZS. Cat suspension (particularly front) also p1sses over standard Fazer suspension, so a much better 'performance' bike, just not as comfortable. I was actually going to get a Cat but someone swapped their Fzs600 for my old bike & cash.....
Actually, it's probably better to think of both the Thundercat and Fazer's engines being heavily based on their predecessor - the FZR600R (1994-1995). Both are variations, the Cat a more powerful update of the deltabox / airbox-where-the-petrol-tank-should-be sportsbike setup, the Fazer a more conventional airbox behind carbs setup. You can certainly blame it when your 2nd gear starts slipping out....the part numbers for rebuild date back to the FZR
Power-wise you're the wrong way round, they are virtually the same until the top of the rev-range, where the cat pulls another 7 or 8 ponies. The Fazer makes about 80 @ the back wheel while the cat makes almost 90. The Cat uses downdraught carbs that probably flow better whereas the FZS carbs are more conventional, ramair type airbox system probably gives the top-end extra shunt too.
The aerodynamics of a full fairing give the cat another 10mph over the FZS. Cat suspension (particularly front) also p1sses over standard Fazer suspension, so a much better 'performance' bike, just not as comfortable. I was actually going to get a Cat but someone swapped their Fzs600 for my old bike & cash.....
Actually, it's probably better to think of both the Thundercat and Fazer's engines being heavily based on their predecessor - the FZR600R (1994-1995). Both are variations, the Cat a more powerful update of the deltabox / airbox-where-the-petrol-tank-should-be sportsbike setup, the Fazer a more conventional airbox behind carbs setup. You can certainly blame it when your 2nd gear starts slipping out....the part numbers for rebuild date back to the FZR