Difference between Ultegra 6700 & 6750
Hi, I want to change my Ultegra 6700 chainset (with 172.5 cranks) for a compact version. I note you don't have a compact 6700 but do have a compact 6750 - what's the difference?
Also, the price is quoted in $ - are these US or Australian?
The 6750 is the Compact version - the 6700 is the standard. This means that the 6750 has a much smaller inner cog and slightly smaller outer. It is a better choice if you want a slightly easier time of it up hills, but you'll trade away a bit of average and top speed (higher cadence to maintain a given speed). If you're in a flat or rolling hill area the Standard is ok, but if you're in a hilly or mountain zone, make life easy on yourself.