andy,
did the 57mm system bring many gains to your bike ??

i ask as ive go the 04 999r and a full system in the celler but i need to buy an old style swingarm to get it to fit, but im not sure its worth it !! any thoughts

You'll need more than a swingarm! don't forget shock linkage etc also

err isnt it the same!!!

Nope!

Common misconception, friend of mine went the other way, old to new swingarm due to 57mm system, first race highsided and £3k later rebuilding JHP informed him that he hadn't swapped the linkage.

It even different on 749R's to new 749's I believe... check the part numbers

better just modifying the pipes......... 57mm+ pc111 = flat torque line over 80llb/ft and 148bhp......with a bit of head modification jhp said 155 ish...... too much for me, but hey.....

just looked and .....your right.... diferent part nos .....dam!!! :puzzled:

just went to my dealer .. the rocker for the old and new swinger is the same .

if they were different then the rocker would have been in the update kit that the dealers recieved to make 03/04 bikes into 05 facelift models