heres my 2p worth,ive had a 749r with both systems (assymetric & 57mm) they both sound the same,the 57mm looks great on the 749r & gave a little extra power 5bhp?. i found the 749r had to be reved high to get the best of it,if i wanted a screaming bike i would buy a jap thingy thingy.i went for a 999s,this bike came with a assymetric system as standard as its last years 999r bar wheels & carbon as a whole. i had a option to fit the 57mm system or sell it.i sold it as the 999s is plenty good enough with the standard assymetric system & power commander. andy is bang on,if you want more power & torc then get a 999bip/s/r. v2 pete had a trial spin on mine & he was amazed how much torc & power it had,(hes used to a 749) he said " i wish i had bought a 999 now". was/is the 57mm system worth the extra £? i say "no".in the real world at my personal level of riding its a no,however - £2000-£3000 on a 57mm system or £2000-£3000 px between my 749r & 999s.i went with the 999 option.

Excellent post Pedro - couldn't agree more!

:o You don't have the 749R anymore??

no,i have 05 spec 999s. had it 3-4 weeks now.

.and just remind us,......you made a big mistake buying this didnt you.....??:lol:

no coment officer.

and here i was thinking the question was..."what are the benefits of the 57mm pipe and how much is a 2nd hand one worth"
NOT "Should i sell the bike im happy with and buy a 999 "
Im not expecting to fit it and gain a load of bhp and torque, just more noise and a little more go would be good.....Jeez!

Well........ congrats, i guess.......:confused:

;)

as i said before,the noise is the same from both systems.if you happy spending around £2000 for a 57mm system with a power commander etc then go for it,but i can speak from my 749r experience.i dont think it was worth it. i have found the same amount of money in my bike swap did.

thanks duncow.