Subject: shifters & deraileurs I have an older road bike that has Shimano 105 group & I am looking at upgrading my front and rear deraileurs to Ultegra. My question is whether my old 105 shifters are compatible with the front & rear Ultegra product or if there could potentially be any any issues? My guess is not, but I am not sure. At this time I don't want to upgrade my shifters, but if it's necessary I would obviously do that. Thanks for any input. |