FAQ — What size seat post/front mech or bottom bracket will fit my bike?

We are often asked what size front mech, seat post or bottom bracket fits a particular model and this can be one of the hardest questions to give an answer to. Because we introduced running changes to each bike, knowing the year of manufacture does not help to clearly identify which variation of the model you may have. Some seatposts were shimmed to fit seat tubes, bottom bracket length is determined by the chainset you use (sorry but we don’t check this with every chainset available) and front mech’s could be top pull, bottom pull or even plate style.

We do not have records of frame numbers for older bikes so this cannot be used to accurately identify a model.

What we have tried to do is give an idea of what was produced over the years, please use this guide, measure the component you are replacing and try and get one with identical dimensions. Always check with your dealer that the part you are purchasing will fit, if in doubt let them do it.

Model Year Seat-tube Seat-post Seatpost Clamp Front Mech BB Shell Max Disc Rotor Comment
222 00-03 27.2 27.2 31.8 n/a 73 200
223 03-04 27.2 27.2 31.8 n/a 73 ISCG 200
223 DD 03-04 27.2 27.2 31.8 31.8 73 200 1"1/2 steerer
224 05-07 27.2 27.2 31.8 31.8 73 ISCG 200
224-evolution 08> 27.2 27.2 31.8 n/a 73 ISCG 200
AirO 99-01 27.2 27.2 31.8 31.8 73 180
Alpine 160 09-10 27.2 27.2 31.8 31.8 73 200
Big T 06-08 27.2 27.2 31.8 31.8 73 200 1"1/2 steerer
Blood 09> 27.2 27.2 31.8 31.8 73 ISCG 200
C16, C16R 95-97 30 27.2 +shim 31.8 31.8 68 n/a Slot faces rear
C16, C16R 97-98 29.6 27.2 +shim 31.8 31.8 68 n/a Slot faces front
Clockwork 93-94 26.8 26.8 28.6 28.6 68 n/a
Clockwork 98-99 29.6 27.2 +shim 31.8 31.8 68 n/a Slot faces front
Crush 06-10 27.2 27.2 31.8 31.8 68 180
Crush 11> 30.9 30.9 34.9 34.9 68 180 Tapered headtube
E3 95-98 30 27.2 +shim 34.9 34.9 68 n/a
E4 98-99 26.8 26.8 31.8 31.8 68 n/a
E6 00-02 26.8 26.8 31.8 31.8 68 160
E8 02-05 26.8 26.8 31.8 31.8 68 160
Elite 2011 27.2 27.2 31.8 31.8 68 160 Tapered headtube
evo2 99-03 27.2 27.2 31.8 31.8 68 180
evo4 04-05 27.2 27.2 31.8 31.8 68 180
evo6 06 27.2 27.2 31.8 31.8 68 180
evo8 07-09 27.2 27.2 31.8 31.8 68 180
Five 04-10 27.2 27.2 31.8 31.8 73 180
Five 10> 30.9 30.9 34.9 34.9 73 ISCG 200 Tapered headtube
G2, G3, G4 05> 27.2 27.2 31.8 31.8 68 160
Gringo 99-00 27.2 27.2 31.8 31.8 68 n/a
Hitman 04> 29.8 27.2 +shim 31.8 n/a 73 ISCG 180
Mii 06-08 27.2 27.2 31.8 n/a 73 ISCG 180
Miii 10> 27.2 27.2 31.8 31.8 73 ISCG 180
Mr O 99-00 31.6 27.2 +shim 34.9 34.9 73 160
Mr XC 99-01 27.2 27.2 31.8 31.8 73 160
MsIsle 98-99 31.6 27.2 +shim 34.9 34.9 73 180
MsIsle 99-06 27.2 27.2 31.8 31.8 73 180
O2 97-98 31.6 27.2 +shim 34.9 34.9 68 n/a
P7 94-98 30 27.2 +shim 31.8 31.8 68 n/a Slot faces rear
P7 98-05 29.6 27.2 +shim 31.8 31.8 68 160 Slot faces front
P7 06-09 29.8 27.2 +shim 31.8 31.8 68 160
P7 10-11 27.2 27.2 29.8 28.6 68 ISCG 05 180
Patriot 99-04 27.2 27.2 31.8 31.8 73 200
Patriot 07-08 27.2 27.2 31.8 31.8 73 200
Patriot 66 05-06 27.2 27.2 31.8 31.8 73 200
Patriot 7+ 03-05 27.2 27.2 31.8 31.8 73 200
R8 10> 27.2 27.2 29.8 28.6 68 180
ST4 08-10 27.2 27.2 31.8 31.8 73 180
Sub 3 00-03 27.2 27.2 31.8 31.8 73 160
Sub 5 00-03 27.2 27.2 31.8 31.8 73 180
UFO 98-99 31.6 27.2 +shim 34.9 34.9 68 n/a
X1 96-98 30 27.2 +shim 31.8 31.8 68 n/a
X2 97-99 30 27.2 +shim 31.8 31.8 68 n/a
Zero 00-02 27.2 27.2 31.8 n/a 73 160

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