Good-Win Racing Mazda Performance Parts

4 Piece Complete ND Underbody Ultralight Aluminum Brace Kit


Made in the USA, and LIFETIME Warranty!

Miata MX5 2016-2017 · Suspension · Braces

Part Number: 61-1839

Application: 2016-2017

Price: $599.00


4 Piece Complete ND Underbody Ultralight Aluminum Brace Kit
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We are proud to introduce our new Complete ND Underbody Brace Kit! Made in the USA, all TIG welded, featuring an ultra light and stiff honeycomb tubular aluminum shaft construction for ultra light weight AND strength. Lifetime warranty!

Easily the best VALUE in a full underbody brace setup for ND generation MX5 (some competitors are cheap and heavy STEEL). All made in the USA, not the China stuff the other brands are selling that often breaks.

BRIAN'S APPLICATION NOTES: See our Forum install thread, this one takes some work to install but average Joes can do it. One large X brace at the middle of the car is far stiffer than the flexible sheet metal stock X brace and extended so it connects to the forward K brace and the rear triangle subframe braces, numerous additional connection points for a much more stout result. Rear triangulated suspension braces provide more consistent, linear, predictable rear suspension response. NOTE some loss of ground clearance with most underbody braces, customers with cars lowered more than an inch need to be careful around bigger speedbumps, etc.

*** Product images may differ from actual product appearance ***


I got the oil cooler installed and I'm diggin' it! Thanks. (product # 10-10012)

-- Shon

After reading many other positive reviews on both the GWR and Miata forums I finally decided to buy this product. My main concern for many months was whether or not I was up to the task of installing the header. But with the excellent instructions on Brian's forum as well as several Miata forum threads it turned out easier than I expected. After receiving notice that the header would arrive on a Friday afternoon, I began the disassembly process. After about 3 hours I had the stock manifold out. Later that afternoon the new catted header arrived right on schedule. And it is a thing of beauty. I opted for the stainless version. Installation on Saturday morning took another 3 hours, although I could have shaved some time off of that but I was actually enjoying the process of double checking torque values and cleaning up my engine compartment. I already have the GWR catted midpipe, so that connection was a snap. I put everything back together, reconnected my battery, and went for a drive. NO CODES! Nice throaty sound with my RSII muffler, and a significant boost in power and low/mid torque. Another happy camper here. I since have added a M-E tune and I feel I have realized all of the gains that Brian has achieved on his 2012 project Miata. I've put several hundred miles on my Miata since the install with zero problems. This is the car that Mazda should have built all along. Thanks Brian.

-- Ron P.