Bottom bracket on Giant Iguans disc

[jknight118]

I'm new to this forum so please take it easy on me. I have a 2003 Giant Iguana disc. I want to replace the bottom bracket and crankset but my local bike shop keeps telling me I need to measure the bottom bracket before I purchase a new one. I go to Giant's website and listall the specs for my bike except bottom bracket size. Can anyone help? I am looking at a race face bottom bracket and race face crankset. Any help is appreciated.

 

[Postie]

Originally posted by jknight118
I'm new to this forum so please take it easy on me. I have a 2003 Giant Iguana disc. I want to replace the bottom bracket and crankset but my local bike shop keeps telling me I need to measure the bottom bracket before I purchase a new one. I go to Giant's website and listall the specs for my bike except bottom bracket size. Can anyone help? I am looking at a race face bottom bracket and race face crankset. Any help is appreciated.

My first suggestion is to go to a different Bike Shop. It is unacceptable that the shop is asking YOU to know which BB you require.

However the answer to your question is: 68 x 113

 

[boudreaux]

Originally posted by Postie
My first suggestion is to go to a different Bike Shop. It is unacceptable that the shop is asking YOU to know which BB you require.

However the answer to your question is: 68 x 113

And what if his BB shell width is 73mm? If one does not know, It's easy enough to measure to be sure.

 

[rek]

Take the BB out and read what's on the label.

If you know that you are going to get a RaceFace BB, knowing the BB shell width isn't a vital issue; they come with a spacer so that they can fit both 68 and 73mm shells.

OR the slack option: buy one of the new two-piece cranksets (Shimano Hollowtech-II or RaceFace X-Type) that has an integrated bottom bracket.