not worth it.
you need new ergo levers,FD,RD, big chainring,cassette,and chain. It's cheaper to sell your 9 speed stuff on ebay, and buy a new chorus group. Given advances and trickle down technology, 2006 chorus is probably better than an older 9 speed record group.krisemi said:I wonder what parts are needed to upgrade Campagnolo Record Ergo 9sp to 10sp? Where to buy these parts??