We researched, compared, and evaluated the most popular rear control arms for the Fox Body Mustang (1979-1993) using manufacturer specifications, industry standards, and aggregated owner feedback. The rear suspension on these cars is notorious for wheel hop and poor geometry under power, making upgraded control arms one of the most effective handling upgrades. In our evaluation, we focused on bushing type, adjustability, construction quality, and real-world durability. Below are our top picks, each with honest strengths and weaknesses to help you choose wisely.
| Photo | Product | Score | Buy |
|---|---|---|---|
 |
Maximum Motorsports Full-Length Rear Control Arms Best Overall Full-length, polyurethane bushings, welded boxed steel construction |
9.2 | 🛒 Check Price |
 |
BMR Suspension SB005 Rear Lower Control Arms Runner Up Boxed steel, polyurethane bushings, greasable |
8.9 | 🛒 Check Price |
 |
UPR Products Rear Lower Control Arms Best Adjustable Adjustable length, spherical bearings, chromoly steel |
8.6 | 🛒 Check Price |
|
🚗
|
Steeda Autosports Rear Lower Control Arms Best Street Performance Full-length, polyurethane bushings with metal sleeves |
8.3 | 🛒 Check Price |
 |
Ford Performance M-5640-A Rear Lower Control Arms Best OEM Upgrade OEM-style stamped steel, rubber bushings |
7.8 | 🛒 Check Price |
 |
QA1 52360 Rear Lower Control Arms Best for Drag Racing Tubular steel, polyurethane bushings, adjustable |
8.1 | 🛒 Check Price |
 |
Moog CK6200 Rear Lower Control Arms Budget Pick OEM replacement, stamped steel, rubber bushings |
7.3 | 🛒 Check Price |
1. Maximum Motorsports Full-Length Rear Control Arms: Best Overall
Maximum Motorsports is widely regarded as the gold standard for Fox Body suspension. Their full-length rear control arms are designed to eliminate the bind inherent in stock arms by using a full-length design with polyurethane bushings. We researched owner feedback and found consistent reports of improved traction and reduced wheel hop under hard acceleration. The boxed steel construction is robust enough for street and track use.
However, these arms are not the most budget-friendly option. If you are on a tight build budget or only need a mild upgrade for street cruising, you might find better value elsewhere. Also, the polyurethane bushings can transmit more noise and vibration than rubber, so comfort-oriented drivers may want to consider that trade-off.
- Full-length design reduces bind and improves geometry over stock
- Heavy-duty welded boxed steel for maximum strength
- Includes polyurethane bushings and all required hardware
Pros: Excellent build quality and fitment; Significantly reduces wheel hop; Long-lasting bushings
Cons: Higher price point than many competitors
2. BMR Suspension SB005 Rear Lower Control Arms: Runner Up
BMR Suspension is a well-known name in the Mustang aftermarket, and their SB005 control arms are a popular choice. We compared specs and owner reviews, finding that these arms offer a very similar design to the Maximum Motorsports at a slightly lower price point. The boxed steel and greasable polyurethane bushings provide excellent strength and the ability to maintain them over time. Many owners report a noticeable reduction in wheel hop and better launch characteristics.
One limitation is that the polyurethane bushings, while durable, can transmit more road noise and vibration than rubber. If you prioritize a quiet, comfortable ride, these may not be ideal. Also, some users have noted that the powder coating can chip over time, but this is cosmetic and does not affect function.
- Boxed steel construction with full-length design
- Greasable polyurethane bushings for longevity
- Direct bolt-in replacement, no modifications needed
Pros: Strong and durable construction; Good value for the performance gain; Greasable fittings extend bushing life
Cons: Can be slightly noisy over bumps
3. UPR Products Rear Lower Control Arms: Best Adjustable
For those who need fine-tuning, the UPR adjustable control arms are a top contender. We evaluated their design, which uses spherical rod ends instead of bushings, providing zero deflection and allowing for precise adjustment of pinion angle. This is critical for drag racers and autocrossers looking to optimize traction. The chromoly steel keeps weight down while maintaining strength. Owner feedback highlights the improved handling and the ability to dial in the suspension.
However, the spherical bearings are not ideal for daily drivers. They transmit more noise and vibration, and they require periodic cleaning and lubrication to prevent wear. If your Fox Body is primarily a street car, the maintenance and noise may be a drawback. Also, the adjustability adds complexity to installation, so some mechanical confidence is needed.
- Adjustable for precise pinion angle and wheelbase tuning
- Spherical rod ends for zero deflection and maximum articulation
- Lightweight chromoly steel construction
Pros: Full adjustability for race-ready setup; Very strong and lightweight; Spherical bearings eliminate bushing bind
Cons: Spherical bearings can be noisy and require maintenance
4. Steeda Autosports Rear Lower Control Arms: Best Street Performance
Steeda is a longtime player in the Mustang performance world, and their rear control arms are a solid choice for street-driven Fox Bodies. We looked at the specs and found that they use a full-length design with polyurethane bushings that are less harsh than some competitors. The metal sleeves help reduce squeaking. Many owners report a noticeable improvement in traction without a huge sacrifice in ride quality.
That said, the polyurethane bushings will eventually wear and may need replacement sooner than spherical bearings. For aggressive track use, the deflection in the bushings might be a limiting factor. If you are building a dedicated race car, you might want a stiffer option. But for a fun street car that sees occasional autocross, these are a great fit.
- Full-length design with improved geometry
- High-quality polyurethane bushings with metal sleeves
- Direct fit, includes hardware
Pros: Good balance of performance and comfort; Reputable brand with strong support; Easy installation
Cons: Bushings can wear faster than spherical options
5. Ford Performance M-5640-A Rear Lower Control Arms: Best OEM Upgrade
If you are looking for a simple replacement that stays close to stock, the Ford Performance control arms are a good option. We compared them to the factory arms and found they are slightly stiffer but still use rubber bushings. This makes for a quiet, comfortable ride that many daily drivers prefer. They are a direct fit and come with new bushings pre-installed, so installation is straightforward.
However, these are not the best choice for performance enthusiasts. The rubber bushings will still allow some deflection, and the stamped steel construction is not as strong as boxed or tubular designs. If you are experiencing significant wheel hop or want to improve handling, you will likely be disappointed. These are best for those who want a fresh stock-like feel without any harshness.
- Direct factory replacement with improved stiffness
- Rubber bushings for quiet, comfortable ride
- Includes new bushings and hardware
Pros: Maintains factory ride quality; Easy bolt-in installation; Affordable
Cons: Minimal performance improvement over stock; Rubber bushings may still deflect under load
6. QA1 52360 Rear Lower Control Arms: Best for Drag Racing
QA1 is known for their suspension components, and these rear control arms are aimed at drag racers. We researched their construction: tubular steel with polyurethane bushings and adjustability. They are lighter than boxed arms, which helps with unsprung weight. Owner feedback from drag racers indicates they work well for reducing wheel hop and improving 60-foot times when set up correctly.
On the downside, the polyurethane bushings can develop squeaks, especially if not greased regularly. The adjustability is useful but adds complexity to setup. For a street car, the noise and maintenance might be annoying. Also, some owners have reported that the powder coating is not as durable as other brands. If you are a weekend drag racer, these are a solid choice, but for all-around use, other options may be better.
- Tubular design reduces weight without sacrificing strength
- Adjustable for pinion angle tuning
- Polyurethane bushings for reduced bind
Pros: Lightweight and strong; Good adjustability for drag setup; Reduces wheel hop effectively
Cons: Bushings can squeak over time; Not as refined as some competitors
7. Moog CK6200 Rear Lower Control Arms: Budget Pick
For those on a tight budget who simply need to replace worn-out original arms, the Moog CK6200 is a practical choice. We looked at the specs and owner reviews: these are basic stamped steel arms with rubber bushings, exactly like the factory parts. They will restore the original ride and handling characteristics without any harshness. Installation is straightforward, and the price is hard to beat.
However, these are not performance parts. If you are looking to reduce wheel hop or improve traction, you will not get the results you want. The rubber bushings will deflect under load, and the stamped steel is not as strong as aftermarket designs. These are best for a daily driver that just needs a functional replacement, not for anyone seeking improved performance.
- Direct OEM replacement at a low price
- Rubber bushings for stock-like comfort
- Includes bushings and hardware
Pros: Very affordable; Easy installation; Restores factory handling
Cons: No performance improvement; Rubber bushings wear faster than polyurethane
Frequently Asked Questions
What do rear control arms do on a Fox Body Mustang?
Rear control arms (also called lower control arms) connect the rear axle to the chassis. They control the fore-aft position of the axle and help manage wheel hop and traction. Upgraded arms reduce deflection and bind, improving acceleration and handling.
Should I get full-length or short control arms?
Full-length arms replace the entire stock arm and offer better geometry and less bind. Short arms only replace the lower portion and are less effective. For most applications, full-length arms are recommended for maximum performance.
Are polyurethane bushings better than rubber?
Polyurethane bushings are stiffer and reduce deflection, improving traction and handling. However, they transmit more noise and vibration and may require lubrication. Rubber bushings are quieter and more comfortable but allow more deflection.
Do I need adjustable control arms?
Adjustable arms allow you to set pinion angle and wheelbase, which is important for drag racing or autocross. For street driving, non-adjustable arms are usually sufficient and simpler to install.
Can I install rear control arms myself?
Yes, with basic hand tools and a jack, most rear control arms are bolt-on. However, you may need to align the rear end afterward. Some arms require greasing or adjustment. Always follow the manufacturer’s instructions.
Our Verdict
After researching and comparing the options, our top pick is the Maximum Motorsports Full-Length Rear Control Arms for their outstanding build quality, proven performance, and excellent owner feedback. The runner up is the BMR Suspension SB005, which offers similar performance at a slightly lower cost. For those needing adjustability, the UPR adjustable arms are a great choice. Choose based on your specific needs and budget.
Last reviewed and spec-checked: January 21, 2026. We re-check our picks and listings periodically.
