View Full Version : Shimano 105 5500 / 5600
10th March 2009, 6:57 PM
I know I have a 105 group set on the bike and was looking to get a new cassette but there seems to be a 5500 / 105 and a 5600 / 105. How do I know which I have and also all the current cassettes seem to be 5600. Do they fit all the chains etc.Please help a numptyG
11th March 2009, 12:26 AM
Any Shimano cassette with the correct number of sprockets will fit. (except some Dura-ace)
11th March 2009, 5:27 AM
5500 is 9 speed. 5600 is 10 speed.
11th March 2009, 10:12 AM
Thanks, top info as normal.G
11th March 2009, 8:47 PM
Whats the difference between dura ace 7800 and 7900 then?
11th March 2009, 9:55 PM
12th March 2009, 10:01 AM
Har, har. 7900 is the new groupset, obviously... It has gear cables running under the handlebar tape in the style of Campagnolo and SRAM, unlike all older Shimano STI levers which have the cables running directly from the lever to the downtube stop. 7800 and 7900 shifting uses different pull ratios; the levers and mechs are not inter-changeable. The cassette spacing on both is the same, so no problems using older 10 speed cassettes with the new group. The other main difference is styling, but in addition the big chainring is in the form of a hollow tube to maximise stiffness.