Fox Installing Maximum Motorsport 4-point Roll Bar + Low Slung Door Bars In My '91 Vert

ReplayMan

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Jan 11, 2010
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I've got a '91 Mustang LX convertible with a Coyote swap and independent rear suspension. I want to move up from local autox to occasional HPDE track days with NASAne, and in order to participate, I need a proper 4-point roll bar.
So I ordered Maximum Motorsport's with the fixed harness bar + diagonal bar for added support & protection. MM also has a low slung door bar, but for hardtops only, convertibles can only get the standard high door bars. Low door bars would be better for me, I use my car regularly, so I ordered them just in case they could be tweaked.
I had Rob at Real Speed Automotive do the job, same place that did the Coyote swap and IRS.

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Shipped everything to Real Speed Automotive

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Stripped the interior

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Rob welded support braces for added strength and support, rather than bolting the roll bar to the car.

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The 4-point roll bar, harness bar & diagonal bar fit great.

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Yes, the low slung bars did not fit properly in the vert. You couldn't close the doors. Sorry, I don't have any before pics, but above are after the bars have been slightly bent, and fit great
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Underneath the car, Rob creates a bracket that is bolted the roll bar, and is welded directly to the MM full frame connectors.


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After final fitment and tweaks, the roll bar is removed and sent out to be painted

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Looks and fits great. It has proper function and safety.
 
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MFE92

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After all that effort and expense, you should have the shoulder belts mounted by having them wrapped around the harness bar, not going over it and tied into the floor. Waaaaaaaay less stretch that way when push comes to crash.
 
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Onefine88

Previously 89SSC18
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Aug 3, 2006
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The roll bar looks Great! Clean install:nice:

How are liking the IRS? I just bought one from a '99 Cobra. Hope to find time to install it in my vert in the next couple months.
 
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ReplayMan

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Jan 11, 2010
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The roll bar looks Great! Clean install:nice:

How are liking the IRS? I just bought one from a '99 Cobra. Hope to find time to install it in my vert in the next couple months.
Love the IRS. You will enjoy it, but be aware...'99 have a weaker version.

After all that effort and expense, you should have the shoulder belts mounted by having them wrapped around the harness bar, not going over it and tied into the floor. Waaaaaaaay less stretch that way when push comes to crash.
Yes, gonna do that. An issue was, the harness bar is to close to the seat to actually wrap the belts around. Stay tuned.
 

FoxMustangLvr

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Love the IRS. You will enjoy it, but be aware...'99 have a weaker version.


Yes, gonna do that. An issue was, the harness bar is to close to the seat to actually wrap the belts around. Stay tuned.
I have a 99' IRS in my hatch and love it.

@ReplayMan Your video of your IRS install was a great help. Thanks for that and also for this thread to show us how you're continuing to push your car to the extreme. Nice car!!
 
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