I have a GX Eagle transmission drivetrain that came on my Levo 4.
ISSUE: When I shift to the hardest/smallest 12 cog – it won't go there.
- Note that there is NO H/L screws or B-tension screws on these
- I already tried all the micro adjustments in the app to no luck
- I already tried loosening the mounting bolt, put it into setup mode, tightening chain. Also no go.
- Confirmed the setup A/B is on the correct A config.
Note that I did switch wheelsets just incase that matters:
- Original rear wheel: Roval Traverse Alloy 27.5", DT Swiss 370 XD freehub body, 12x148mm, 32h
- Switched to: Chris King Superboost CL 12×157 Rear Axle
Another note:
- Shifting from biggest cog also seems to have an issue – going for 1 doesn't then go to 2 – you have to press shift again and then it goes down 1 but the app shows 3 even though I am in 2 now. So at the 11 cog, it says it's in 12 so it thinks it's already at the smallest cog.
TYIA for any help.
by Jughead-Jones-1
14 Comments
Are you sure the freehub and/or cassette is fully seated?
Did you set this up or did it come like this from factory?
B tension screw could be set incorrectly.
The GX T-type is not working well on g4 Levos. Contact your shop and SRAM and ask them for a solution. Every bike with this combination does shift properly.
Not yet they starting to acknowledge the issue. I bet you are at micro adjust 14. If you put on a XO rd you would be at 6-7 and it would shift fine.
Does your disc and calliper line up good, or is that maxed out in adjustment?
The bike is designed for a 148, if you put a 157 on it everything moves over. The hub shell of a 157 is wider than a 148. I’m not sure how you even got it on your bike. Does the rotor fit into place?
Boost and Superboost are two different hub standards that are not compatible. Your shifting is off because your rear triangle is flexing 9mm to accommodate the larger hub spacing. You need to use a 12×148 (Boost) hub only on your bike.
Take the wheel off before you wreck your frame. You can’t swap a superboost rear wheel in there. You need a standard boost rear wheel. Ignore everything besides the other guy telling you this.
Why would you buy a superboost rear wheel when you have a boost frame? I believe that’s your biggest issue here. The rd not shifting is nothing compared to that kind of mistake.
Are you certain about those wheel specs? 9mm wider axle would mean you spread the frame pretty wide and have far fewer thru-axle threads engaged.
If that’s truly 157, it’s throwing off the whole geometry of the rear end.
EDIT/CORRECTION — I can’t edit the post for some reason – I confirmed I have a BOOST hub on it not SUPERBOOST – it’s the correct size!
Have you adjust the derailleur tension?.
I had the same issue, my first try was adjust de H-L screws, no luck, until i adjust the tension screw.
UPDATE – appears my hanger was slightly bent – corrected and shifts better. Not fully smooth so may order a new hanger.