im looking for a set of vision r bend aerobars (same thing as S bend). i have a set of j bends that came with my 2010 cervelo P2 and id like the feel of flat bars better. i would be willing to trade the J bends i have for S/R bend bars. my bars are aluminum. 26mm clamp. also open to other bar offers/trades. would possibly be willing to trade base bar too depending on what you have