I run a 34t 1x11 drivetrain on my mtb. I need to run a 36t chainring but it would grind against the frame if I did that. Is there any way to push my chainring further away from my frame for me to be able to fit a bigger ring? I have a 2017 Trek Procal 9.7 if that helps at all.

I have a 36t Sram Eagle (round) on my 2017 Procaliber (aluminum frame). I’m using a Sram road crankset with Stages DUB spindle and direct-mount ring. It took some trial and error to get it set up. I have a “magic” number of thin metal washer shims on either side so that the chainring barely clears …

Is your crankset and chainring a direct mount or bolt on? If it’s bolt on, I assume you already have the chainring bolted to the outside of the crank arm?

Wheels Manufacturing should have something available. They make a thread together bb92 that works with GXP and have loads of different spacers available.

I just want to thank all of you for your help! It looks like I am running out of options though, my crankset only allows bolt on chainring and might try some spacers. The chain line is going to be garbage but I mostly train on the road so it should not be too bad.

Direct mount ring on sram road crank.

I realized I do not have a boost chainring yet I have a boost frame and crankset. Can I fit a 36t chainring if I have a boost chainring? 34t non boost chainring pictured. [image] [image] [image]

Can you take a picture of your current chain line. I’m far from an expert, but that does look very close to the frame/more in board than usual.

What gear do you want it in? I was also confused why my frame could not fit a 36t

TrainerRoad

How to fit a bigger chainring on MTB?

Equipment

Dschlag October 16, 2020, 2:31am 18

Nevermind, I ordered a boost chainring which should clear with the extra 3mm room.

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