Jam2 chain ring

[RustyMTB]

Mine is worn & will need replacing soon. Does anyone know what offset is on the factory fitment? I see 52 & 55mm options. I'm guessing 55mm for a boost 12spd bike but want to check before buying. Cheers.

 

[RustyMTB]

Guys....?

Answered my own question. If you have a Shimano 12 speed drivetrain, oem fitment is a 34 tooth 52mm chainring.

 

[Sijmes]

Guys....?

Answered my own question. If you have a Shimano 12 speed drivetrain, oem fitment is a 34 tooth 52mm chainring.

Thanks Rusty...

There are a few cheap options so I'm told ?

 

[RustyMTB]

I bought this which should be a direct replacement.

 

[Sijmes]

I bought this which should be a direct replacement.

View attachment 107374

That's a reasonable price, steel should last a while too...

 

[Husky430]

Sorry should have looked here before posting my post, guessing Jam and Sam would be the same?

 

[RustyMTB]

Just looked up the Focus archive for a 2022 Sam 6.8. They don't say specifically but mention 34 tooth & Deore XT 12 speed, so it's likely the same but if you can remove yours, the spec will be stamped on it.

 

[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.

 

[RustyMTB]

Not sure it would kill the experience, depending on how you ride. The bigger the chainrinmg, the harder the effort obvs but a Sam is an enduro rig, so at a guess, it;s generally heading downhill & a 36 shouldn't be the end of the world. Reckon it comes down to what you need from the bike.