Chain ring Line??

[Husky430]

Looking to overhaul my drive line on my now 2 year old Sam 6.9.
Got nearly all the components except the chain ring, looking at buying a Race Face one from Fox Australia as only one I can find but there is a section for chain line in mm's, one is 52mm and the other is 55mm's.
Anyone know what they are measuring or which is the correct one for my bike? Can't really see what a BIG difference 3mm will make but it must be for some reason.
Thanks in advance, cheers Steve

 

[irie]

I may be completely wrong and stand to be corrected, but I think that 52mm is Boost whereas 55mm is Super Boost ...

 

[steve_sordy]

See Husky430's post on "chain ring line". If you have a 12-speed it will, be a 52mm chainline.

 

[irie]

See Husky430's post on "chain ring line". If you have a 12-speed it will, be a 52mm chainline.

I was replying to the first post in this thread, made by Husky430.

 

[Husky430]

Thanks fellas, have been looking for one in oz online but can only seem to see a 36 tooth version, all the 34 s seem to be sold out, there are some alloy ones but are 3 times the money of a steel one so need to keep looking or ask where I bought the bike for a genuine Focus one. Have any of you tried a 36 over a 34, guessing there won’t be a huge difference, I’m thinking this way as a last resort.

 

[irie]

Thanks fellas, have been looking for one in oz online but can only seem to see a 36 tooth version, all the 34 s seem to be sold out, there are some alloy ones but are 3 times the money of a steel one so need to keep looking or ask where I bought the bike for a genuine Focus one. Have any of you tried a 36 over a 34, guessing there won’t be a huge difference, I’m thinking this way as a last resort.

Am in the UK. Looked for 34T steel Bosch E*Spec DM Chainring (CR4USA-100), seems to be out of stock everywhere. As you say, the alloy version is available but 3 times the price.

 

[steve_sordy]

I was replying to the first post in this thread, made by Husky430.

My apologies, I was replying to @RustyMTB in his Focus Jam2 chainring thread, I was swapping back and forth between the two and got it wrong!