Spohn Performance | Support Center

Can the drag anti-roll sway bars, pro-touring sway bars or aftermarket rear sway bar installation kit be used on a rear end with a back brace installed?

If you have a back brace installed on your aftermarket rear end and want to install our aftermarket rear sway bar installation kit or one of our pro-series rear anti-roll sway bars or one of our pro-touring rear sway bars that utilize the u-bolt clamp on rear sway bar mounting saddles, the saddles will have to be welded in place. 

So yes, these can be installed with a back brace, but you are unable to utilize the u-bolts and will have to weld the saddles to the axle tubes.