Chain gets derailed

It depends what crankset you have. The one you linked is for a sram direct mount and isn't compatible with any Shimano crank.

You'll need a HG+ compatible chain ring for that chain.
I don't know if Praxis makes one but SRAM definitely doesn't make one.

the-one1 said:

You'll need a HG+ compatible chain ring for that chain.
I don't know if Praxis makes one but SRAM definitely doesn't make one.

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So what happens if I use the SRAM chainring I ordered? Sorry I am a noob. I haven't had a bike for more than 25 years. Back in my days, you just bought a chain and slap it in (or at least that's how I remember).
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any brand/type/style of 3-bolt DM ring will work on the crank
so the one you posted from SRAM with offset 3 is fine

127.0.0.1 said:

any brand/type/style of 3-bolt DM ring will work on the crank
so the one you posted from SRAM with offset 3 is fine

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the-one1's comment above says my chain is HG+ (Shimano CM-N8100) and chainring should be HG+ compatible, which the SRAM I linked is not - if I understand it correctly.

For Shimano HG+ chains you'll need chainring that matches the profile otherwise it may skip.

The praxis rings should be compatible with HG+ chains however they have a reputation of dropping chains as they don't use a narrow wide profile but instead offset alternating teeth to retain the chain.

The bike I have came with a praxis crankset and the first thing I did was just replace the wave tech ring. The general consensus on the forums was that there were a lot of reports of dropped chains even with an upper chain guide with the stock wave tech rings. I replaced the wave tech ring with a Wolftooth HG+ specific narrow wide ring. No dropped chains with the Wolftooth after 800 km of riding so far.

call praxis yourself. I did and they immediately sent me a 3 degree offset for free...great service.

Stanceslao said:

So what happens if I use the SRAM chainring I ordered? Sorry I am a noob. I haven't had a bike for more than 25 years. Back in my days, you just bought a chain and slap it in (or at least that's how I remember).
.

Click to expand...

The shimano chain will work fine with the sram chainring.

Toby-BeachBiker said:

call praxis yourself. I did and they immediately sent me a 3 degree offset for free...great service.

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Was yours a warranty issue?

J.B. Weld said:

Was yours a warranty issue?

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Yes. I actually emailed them (not called like I said earlier) and told them I had a giant fathom 2 that the chain continues falling off on the frame side. Within an hour, I got an email back and the guy asked for my mailing address and told me that the bikes should have had a 3 degree offset and they would mail it to me for free. I had a new chainring about 4-5 days after my initial email. The invoice stated "warranty repair"

Toby-BeachBiker said:

Yes. I actually emailed them (not called like I said earlier) and told them I had a giant fathom 2 that the chain continues falling off on the frame side. Within an hour, I got an email back and the guy asked for my mailing address and told me that the bikes should have had a 3 degree offset and they would mail it to me for free. I had a new chainring about 4-5 days after my initial email. The invoice stated "warranty repair"

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So that should have been a warranty issue with Giant. It's pretty unusual for a component manufacture to cover for someone else's f-up.

Ok, I give up!

I installed the SRAM 3mm offset today and have tested for 2 hours. It has solved the chain falling off towards the frame. BUT now, chain falls off towards the pedal when I'm on the highest gear .

How's your chain tension? When I built my bike my chain kept falling off frame side. Followed shimanos directions but the chain was too loose. Removed a few links and haven't had an issue since.

Now someone can correct me if I'm wrong, but I was under the impression that Sram 12 speed chains had larger rollers than Shimano 12 speed chains. This would make the teeth on your Sram chainring further apart than ideal. I don't know if that would actually cause any problems. Just a thought.

I had the same problem recently. My case was a slightly bent link. It was bowed inwards. I took a small flathead and twisted it until the link straightened. Maybe not your problem, but it’s something to consider.

call/email praxis. that would be my suggestion.

Yes. Praxis will send you a 3mm offset chainring made for your Shimano 12spd chain at no cost to you.