While I don't have them, I have heard several people with them compare their stiffening ability to that of the FM frame rails and butterfly brace. I have the frame rails and can confirm they do make a noticeable difference.
Anybody ever use thes bolt-in door bars? Are they worthwhile? Do they stiffen the frame much, or are the bolt on frame rail stiffeners better?
What's left of a '96 Miata with stock clutch.
My car exceeds my driving ability. That's the only possible explanation.
While I don't have them, I have heard several people with them compare their stiffening ability to that of the FM frame rails and butterfly brace. I have the frame rails and can confirm they do make a noticeable difference.
Worth the $$$
Speed
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Don't look...there's nothing down here for you!
I've got them on my 90. I never tracked the car without them - had them put in when I did suspension and roll bar installsright when I got the car. The chassis seems plenty stiff with the roll bar and door bars installed. I'd say that based on the geometry involved that they'd do the same for stiffening that the frame rails do but for less weight (albeit higher and further outboard) - they make pretty big triangles from the B pillar up to the floor at the A pillar.
Chris
i tool a set off a friend NA to barrow and installed them in my NB, they only fix because my car is stripped but yes they are so very much worth the money.
jeff_man
Lost in translation!
05 MX-5 Mazdaspeed #1024 Titanium Gray Mica
I figured that you would want to avoid the extra weight in DP.
Turns out DP is not as light as it looks! Under current rules, my car would need to weigh 2073 lbs. (That is with a 75 lb penalty for wheels wider than 7"). Last time I weighed the car it was at 2025! Rule changes asr in the works that will lower the min. Weight for my car down to 1924 lbs, but that won't take effect until 2012. DP cars look all stripped out and light until you look at the passenger floorboard and see all the ballast plates!
What's left of a '96 Miata with stock clutch.
My car exceeds my driving ability. That's the only possible explanation.
Gary installed them in my 90 and the difference was obvious. Not a bad safety item either.
Bobby
RED RULES!
90 Miata, 04 Rubicon, 05 Boxster