New posts

I want to run a bash guard on 2020 Sram X0 Eagle cranks...

Sept. 9, 2020, 1:04 p.m.
Posts: 43
Joined: Aug. 1, 2019

So, building up a new bike - crank interfaces sure have changed a lot in the last few years! I already have the crankset - it's a 2020 Sram X0 Eagle. It came with a 32T direct mount chainring (boost 3mm offset, which is correct for my bike), but I really want to run a 30T ring with a bash guard. In case it matters, I will more than likely be running an 11spd Sram drivetrain (and yes, apparently Eagle rings are 11spd compatible). Are there any options out there? The Sram site is hard to navigate for small parts like rings and spiders. Does anyone know if Sram or anyone else makes a spider that will fit those cranks, but allows for mounting of standard 104 BCD rings (and bash)? I see the Wolf Tooth has their Camo system that should work for me, but it's pretty spendy when all is said and done. It also restricts me to only using Wolf Tooth rings in the future, which is annoying and entirely predictable. Ideally, I'd like to find a Sram direct mount spider that allows you to mount 104 BCD rings. Also looks like NSB might have something that works, but I think the spider and bashguard combo they sell is non-boost (49mm chainline - I need 52mm).

I can't believe how needlessly complicated the crank/bb/ring interface has gotten. Welcome to the bike industry!

Sept. 9, 2020, 1:16 p.m.
Posts: 425
Joined: Sept. 10, 2012

The WT bash is the only non-ISCG tab bash I am aware of for modern splined cranks. If NSB makes another option that's great. If your chainstays have clearance for you to run a non-Boost ring that will give you a better chainline in the easy gears which I would consider a bonus.


 Last edited by: Vikb on Sept. 9, 2020, 1:19 p.m., edited 1 time in total.
Sept. 9, 2020, 1:57 p.m.
Posts: 43
Joined: Aug. 1, 2019

Interesting - never thought of the advantage running a tighter chainline to ease the wear on the bigger cogs. To be completely honest, the vast majority of my pedaling happens up there anyway (climbing). I do have a feeling that my chainstay clearance is very tight though - I'll check tonight.

As far as the WT Camo system goes - I also don't like how the spider and bashguard are one piece. Means I have to replace the whole thing if I really damage the bashguard.


 Last edited by: rwalters on Sept. 9, 2020, 1:59 p.m., edited 1 time in total.
Sept. 9, 2020, 2:06 p.m.
Posts: 70
Joined: Oct. 10, 2017

is there a reason you just can get a 30T DM chainring and run it on your X0 cranks? 

Missing ISCG mounts?


 Last edited by: ehfour on Sept. 9, 2020, 2:10 p.m., edited 1 time in total.
Sept. 9, 2020, 2:17 p.m.
Posts: 1251
Joined: Nov. 8, 2003

If you've got tabs, something like this would be simpler no? 

https://www.blackspire.com/product/crusher/

Sept. 9, 2020, 2:23 p.m.
Posts: 1148
Joined: March 18, 2017

With ISCG tabs I’ve been running the Blackspire TrailX guides on multiple bikes now. Simple, quiet and is supporting local manufacturing

Sept. 9, 2020, 2:39 p.m.
Posts: 43
Joined: Aug. 1, 2019

I'm not a fan of the taco bash guards. I've found they bend and break easier than ring mounted ones. I also don't like the added stress they put directly into the frame. I'd rather have my chainring or spider break than have a piece of my frame break off.

Sept. 9, 2020, 2:47 p.m.
Posts: 60
Joined: Feb. 24, 2017

Mine is the only bike I see around with a crank mounted bash. Unless you want a chainring smaller than 30t, 104BCD is still good.

Sram used to make 104 spiders for its direct mount, are they still around?

Sept. 9, 2020, 3:12 p.m.
Posts: 43
Joined: Aug. 1, 2019

Posted by: velocipedestrian

Mine is the only bike I see around with a crank mounted bash. Unless you want a chainring smaller than 30t, 104BCD is still good.

Sram used to make 104 spiders for its direct mount, are they still around?

I am the other guy still running a crank mounted bash!

I wish I knew if Sram was still making 104BCD spiders.....

Sept. 9, 2020, 3:51 p.m.
Posts: 1148
Joined: March 18, 2017

Don’t they make a 94 bcd spider?

Sept. 9, 2020, 6:13 p.m.
Posts: 60
Joined: Feb. 24, 2017

Posted by: Endur-Bro

Don’t they make a 94 bcd spider?

If they do (and someone makes a bash for it) that gets the boxes ticked.

Sept. 9, 2020, 8:07 p.m.
Posts: 328
Joined: Feb. 24, 2017

Black Spire still make (as far as I know) a bash guard that fits under a thread in bb cup. I have one on my Chameleon which has no ISCG tabs. Pretty skookum. If you’re press fit, your sol.

Sept. 9, 2020, 8:19 p.m.
Posts: 43
Joined: Aug. 1, 2019

Posted by: andy-eunson

Black Spire still make (as far as I know) a bash guard that fits under a thread in bb cup. I have one on my Chameleon which has no ISCG tabs. Pretty skookum. If you’re press fit, your sol.

I have the ISCG tabs, and BB is threaded. I just really want a ring mounted bash.

As far as I can tell, SRAM does not currently make any kind of 4-bolt spider. Looks like they're still providing 4-bolt rings though.


 Last edited by: rwalters on Sept. 9, 2020, 8:21 p.m., edited 1 time in total.
Sept. 12, 2020, 9:03 a.m.
Posts: 50
Joined: Nov. 13, 2006

I have a spider from a Truvativ XO DH crankset I bought in 2013. I immediately swapped the spider and 36T ring for a smaller DM ring, and the spider has been sitting in a bin in my basement ever since. You are welcome to have it. If you want it, send me a PM and we can figure out how to get it to you.

Sept. 12, 2020, 12:42 p.m.
Posts: 50
Joined: Nov. 13, 2006

Actually I don't think what I have will work for what you want to do. The spider I have is designed for a single ring; it only has a flat interface on the inside for the one ring, and it is rounded on the outside.

Forum jump: