Blown rebound in 2011 Boxxer RC's (??)

I'd say you suffered from hydrolock. Pretty common in the RS line. The seal around the rebound shaft has failed, letting oil inside the right stanchion migrate to the lowers, preventing the fork from compressing more than those 3.5 inches you mention. Pull the lowers apart with a big pan to receive the oil below them, and you'll recover the full travel. You'll have to change the seal/slider in the bottom of the right stanchion, and off course refill the stanchion from the top.

I'd check the outer tube of the rebound damper shaft for cracks. Though mainly the r2c2/wc dampers did it, some of the 2010 and 2011 had cracking shafts. This can also land you in lock-town.

I bought the fork new from an online bike shop and I know that it should not be doing this. I contacted Sram and all they told me was to warant it from the shop I bought it from. The beggining stroke rebound works fine, but its just the ending stroke that is having problems. Before I try and warranty it, does anyone know what the problem may be? Cheers!

If you take apart the rebound and can't find anything obviously wrong, you'll have to replace the rebound assembly. It's pretty easy to service dual crown forks as you can just take out one stanchion at a time. Just make sure you check the damper oil volume.

As for new forks, I don't like saying this but you should rebuild a fork as soon as you get it. I've seen new forks that were perfectly wonderful out of OEM but I've seen a lot of forks without bath oil or low on damper oil. It sucks.

On dh stuff especially, you should take a look and ID some small parts/replacement stuff to keep on hand if you like tinkering.

mk

ButtersNZ said:

Pic of the damage. View attachment 114433

Click to expand...

OMG that is a lot of plastic!!!!!!!! Your problem is that you have Rock Shox fork!