Support Center

2013 ENDURO EXPERT EVO rear thru axle comes loose

Tony Harlich Jan 15, 2014 10:51PM PST

REAR HUB Specialized Hi Lo disc, 4x-sealed cartridge bearing, 12mm thru-axle, 32h

Hi, on the above spec bike my rear hub thru-axle has come loose and the wheel rear wheel has nearly fallen off twice since I have had the bike. I tighten the hell out of the thru-axle and it still keeps coming loose. Is there a trick to avoid this from happening. I have never had this happen on a bike before. Obviously a severe safety concern.


Up 1 Rated Down
Kyle Blomquist Jan 16, 2014 08:54AM PST SPECIALIZED Agent
Hi, Tony!

I would recommend trying a little bit of Loctite on the screw-end of your thru-axle. Otherwise, you can bring it to your local Specialized dealer and see if they can look it over and see what can be done to help you out.

Happy riding!
Up 0 Rated Down
Justin Boland Aug 05, 2014 01:29PM PDT
I have had the same thing happen on my 2013 Stumpjumper FSR - same hub, same thru-axle as the Enduro. This must be a problem with the hub, since it is the only thing that could be creating friction between wheel and TA in order to unscrew the TA. This is a definite safety concern. I'm hoping for a satisfactory response from Specialized.
Up 0 Rated Down
Specialized Customer Service Aug 05, 2014 02:35PM PDT SPECIALIZED Agent
Hi Justin, not too sure what could be causing your thru-axle to be loosening. I recommend bringing it to your local Specialized dealer and have them take a look at it to see what can be done.
Up 0 Rated Down
curt Jun 26, 2015 07:35PM PDT
I just had that happen today. I came across this thread by searching "thru axle coming loose". I have a 2012 Specialized Stumpjumper FSR. It caused me to have a bad crash going fast downhill. I'm surprised to see my search results about how many others are having the same the initial findings it seems to be a lot of Specialized '12 and '13 having this.

Up 0 Rated Down
Thomas Fowler Jun 29, 2015 10:47AM PDT SPECIALIZED Agent

Thanks for reaching out. I would ask you to visit your local Specialized retailer asap, ask them to preform a product eval and to contact their Retail Care Rep.

Up 0 Rated Down
Wes Downing Jul 23, 2015 01:24PM PDT
Same thing happens here constantly, every 2 to 3 rides. Problem is you don't know or think that the axle ruining other parts of the bike.

I've also blown out the rear hub because something was loose inside the hub..?, at least thats what the mechanic said and he seemed pretty surprised at it, I needed a new hub (no offer from shop for replacement or discounted replacement, specialized just told me to go to dealer - the bike was less then a year old). I've also had to replace the brakes because they were pretty much junk and never worked correctly.

I met another guy on the trail that was riding a stumpjumper and he has the same issues as well as something with the cranks loosing - I was too tired from climbing 1500 feet and a rubbing brake because the axle was loose to remember what he said.

I don't think I've gone consecutive rides without some sort of issue in 6 months. The bike is a year old.

Extremely annoying. Pretty surprised at specializes response. The dealers don't do much and charge an arm and a leg to even look at it.

Up 0 Rated Down
Wes Downing Jul 23, 2015 01:26PM PDT
Forgot to mention my rear shock hasn't held air in it since ive bought it. Keeps air for maybe 2 weeks.

Post Your Public Answer

Your name (required)
Your email address (required)
Answer (required)