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FM Adjustable rear upper control arms (pair)

Paco control arms
FM Adjustable rear upper control arms (pair)

Regular Price: $399.00

Special Price $299.00

Easy camber adjustment and no loss of travel!

Made in the USA

Exclusive to Flyin' Miata

Availability: In stock



On closeout! Recent material price increases have pushed the cost of these beyond what the market will bear, so we're going to have a $100 off goodbye party! While supplies last.

We worked with Paco Motorsports to design this exclusive part. These rear upper control arms are a bolt-in replacement for the stock part. Unlike other arms on the market, they use the stock Miata bushing sizes. This gives you the choice of either rubber or poly bushings depending on your needs. Bushings are not included.

Why? So you can adjust your camber quickly and easily without affecting toe. It'll also let you reach alignment ranges that are not possible on stock arms. The adjustment moves the top of the tires inboard, so if you're trying to maximize your fender clearance these will help.

To adjust, simply remove the bolt attaching the control arm to the upright and rotate the end of the arm before locking it down with the lock nut. Each 180 degree turn will change camber by 0.25 degrees, making it easy to make precise, consistent adjustments. There's also no chance of the setting slipping under load.

Unlike other aftermarket control arms, these are properly contoured to clear the rear subframe. There is no limitation to compression travel. They can add up to 8 degrees of camber in each direction. Yes, you read that right.

Fabricated in the USA out of High Strength Low Alloy steel, these have been through both Finite Element Analysis and real-world testing on a 466 rwhp Miata running 225-series Toyo RR tires with downforce. They are stronger than required by a substantial margin.

 For 1990-05 Miatas. Sold in pairs.

Additional Information

Additional Information

Part number 13-82005
TÜV approval available No
Fits: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999, 2000, 2001, 2002, 2003, 2004 (non-MSM), 2005 (non-MSM), MSM
Manufacturer Paco Motorsports
Flyin' Miata exclusive Yes
Fits Exocet? Yes
Proposition 65 Warning: Cancer and reproductive harm
California emissions No

Customer Reviews 4 item(s)

not great for the price
After about a year they are completely rusty and were very hard to adjust after being pretty much completely siezed.
Review by Alex / (Posted on 11/22/2018)
Nice, but could be nicer.
It would be nice if these could be adjusted by simply turning the screw with everything assembled - much like an adjustable sway bar end link. It's not exactly "quick and easy" during a garage alignment job to jack up the car, pull the wheel, unbolt the upright, then spin the adjuster! That being said, these are a great way to achieve a very broad range of camber settings on the rears.

(Note from Flyin' Miata: a turnbuckle style of adjustment wouldn't package well, we tested it. This way, there is also no way for the adjustment to slip.)
Review by Nathan / (Posted on 11/4/2016)
Great design for quick and repeatable adjustments.
Great idea for easily changing alignment from street to track. Hopefully the savings in tire wear will eventually pay for the arms.
The bushings fit exactly like the stock arms although both were a little too tight. A little sanding on the urethane bore and ends got just enough relief to swing the arms up for adjustment. I also replaced one of the lower cam bolts with a fixed plate so I wouldn't have to worry about it moving. That just left one cam bolt for toe on each side.
Review by John / (Posted on 1/11/2016)
Price is a little steep for someone on a budget but this opens up a WIDE spectrum of chamber adjustment for the rear!
Would have been more comfortable with a 200-250 price range but I couldn't argue the ability to have a nearly total adjustable rear suspension!

My only gripe with these are how generic they are; they are not accepting of a wide variety of bushs like the OE units are. I'm using Super Pro poly. bushes and they wouldn't seat properly until I shaved some material away from these control-arms to allow them to accommodate the bevel on the bushs. Even after doing that and having them seat as flush as possible, the bearing still sits just inside the bushs and as a result, the bush itself contacts the mounting point and makes the upper arm nearly impossible to move by hand.

Other than that, great product and now my lowered NA no longer looks like it was stepped on by a giant!
At the time of this post, I've had them on the car for the past 3 months which is my DD car.
Review by Evan L. / (Posted on 10/23/2015)
Click here for instructions for this part.