QA1 LCA has no bumper
I have a set that doesn't have any bumpers, bought over a year ago.
I also ran a set of CAP made tubular LCA's, basically identical to the QA1 tubular LCA's except CAP made them with super crappy welds (Qa1 bought CAP out for their designs). I ran the CAP tubular LCA's for like 60k miles on my Challenger and never had any contact issues. I did have a crappy, CAP auto weld fail on one of those LCA's though. But no marks to indicate the tubular LCA ever hit the frame, and that car was lowered a good 2". I briefly had a set of drop spindles on it, when I took them off I put the car right back where it was without them.
One of the things about the tubular LCA design is that they're not as tall in profile height as the original LCA's. In fact, at the location of the original bump stop the Qa1 LCA's are about an inch shorter in profile height. That means a full additional inch of travel at that location, which means almost double that amount of travel at the wheel. Meaning, you're a lot less likely to bottom out the tubular LCA's than you are a stock set of LCA's.
This is something I've considered, my plan for dealing with it when I mounted the Qa1 LCA's on my Duster was to check to see where the interference would occur and then drill and tap a hole in the frame to mount a bumpstop there. There's a reinforced provision on the frame for the original bump stops to hit, so I figured adding a poly bump stop like the ones I run on my stock LCA's would be pretty easy as a "just in case" feature. It may be overkill though, I know that on 72BBSwinger's car he was actually getting some tire rub at the top of his wheelhouses up front (top of the wheels contacting the bottom of the inner fender). That was with stock LCA's if I remember right. So, with the additional clearance the QA1 LCA's offer translating into additional suspension travel the thing that stops the suspension might not be the LCA hitting the frame anyway, it could be the top of the tire hitting the bottom of the inner fender. And on a car that isn't lowered it probably wouldn't be an issue at all unless you were running tiny little torsion bars.
This is what I run on my stock LCA's, would be simple enough to just drill and tap a hole in the frame to screw them into for insurance if you're worried about it. They make thicker ones as well.
https://www.summitracing.com/parts/ens-9-9132g
I have a set that doesn't have any bumpers, bought over a year ago.
I also ran a set of CAP made tubular LCA's, basically identical to the QA1 tubular LCA's except CAP made them with super crappy welds (Qa1 bought CAP out for their designs). I ran the CAP tubular LCA's for like 60k miles on my Challenger and never had any contact issues. I did have a crappy, CAP auto weld fail on one of those LCA's though. But no marks to indicate the tubular LCA ever hit the frame, and that car was lowered a good 2". I briefly had a set of drop spindles on it, when I took them off I put the car right back where it was without them.
One of the things about the tubular LCA design is that they're not as tall in profile height as the original LCA's. In fact, at the location of the original bump stop the Qa1 LCA's are about an inch shorter in profile height. That means a full additional inch of travel at that location, which means almost double that amount of travel at the wheel. Meaning, you're a lot less likely to bottom out the tubular LCA's than you are a stock set of LCA's.
This is something I've considered, my plan for dealing with it when I mounted the Qa1 LCA's on my Duster was to check to see where the interference would occur and then drill and tap a hole in the frame to mount a bumpstop there. There's a reinforced provision on the frame for the original bump stops to hit, so I figured adding a poly bump stop like the ones I run on my stock LCA's would be pretty easy as a "just in case" feature. It may be overkill though, I know that on 72BBSwinger's car he was actually getting some tire rub at the top of his wheelhouses up front (top of the wheels contacting the bottom of the inner fender). That was with stock LCA's if I remember right. So, with the additional clearance the QA1 LCA's offer translating into additional suspension travel the thing that stops the suspension might not be the LCA hitting the frame anyway, it could be the top of the tire hitting the bottom of the inner fender. And on a car that isn't lowered it probably wouldn't be an issue at all unless you were running tiny little torsion bars.
This is what I run on my stock LCA's, would be simple enough to just drill and tap a hole in the frame to screw them into for insurance if you're worried about it. They make thicker ones as well.
https://www.summitracing.com/parts/ens-9-9132g
