Currently have a 9sp cassette on Mavic Aksium road wheels. Got the chance of some 105 10 spd shifters at bargain price, but currently run 9 spd. I'm not bothered about the extra gear but it means I can upgrade the shifters from Sora to 105. With the price of a new 105 cassette on top, the shifters still work out a good deal.
Can I simply buy a 10 spd cassette so the shifters are usable? (and chain)
Am I right in thinking the gaps between the sprockets are smaller/thinner sprockets rather than the cassette being wider????
Thanks.
