TTB axle retaining "C" clip

[Slingblade]

I use this on mine also (hose clamps used to secure the boot also secure the spring).
Spring needs to be 2.5-3" long, 1-3/8" I.D., and rated around 20-30 lbs-in.

As was mentioned, internal springs leave little room in there for the shaft to move when the suspension droops (which can bust the dust cap out of the axle yoke).

I need to find one of those, I've popped the cap off mine way to much, and usually on mine with all the flex it just crushes the spring flat inside there!!

Chris