Boundary Engineering Frame Rail Braces

Boundary Engineering Frame Rail Braces

[7/4/2009] Reviewed by: SuperSlow

Applicable to: '90 - '97 '99-'05 1.6 liter 1.8 liter

Boundary Engineering braces that fit over factory frame rails. They are a cheaper alternative to the Flyin Miata braces.

High quality heavy (literally) stainless laser-cut formed rails. Fitment is perfect. Hardware is also stainless. Just make sure to line them up as far forward as possible. The rear-most holes will fall 3-4 inches forward of the rear bulkhead.

Measure twice before drilling. Secure the rails by bolting down the first drilled hole. EYE-PRO and gloves are a must. You will have 24 holes to make, so there is no going back after doing this. Use threadlocker on the bolts and prepare to reshape the brackets for the hard lines to fit; #10 sheet metal screw to secure them. They definitely make a difference, even on my 99 with hardtop. I have no other stiffeners on the car yet. Less shifting and groaning from the HT when backing out of the driveway/going over railroad tracks. plus I can jack the car in the center of one rail and rotate tires easily now...

Difficult to remove without leaving damage