The price shown is for a generic default package, before any customizations. The Road & Track Box is often customized. PLEASE CONTACT A SALES ASSOCIATE FOR ASSISTANCE WITH PLACING AN ORDER.
The MM Road & Track Grip Box takes the stock Mustang suspension design to the next level. This combination of parts provides great performance while retaining ride quality suitable for daily driving. Excellent for canyon carving, autocrossing, track days, and daily commuting.
The Road & Track Box takes handling performance as far as the stock suspension design can go while still retaining good ride quality. It provides all the basics: chassis stiffening, higher-rate springs with matching dampers, caster camber plates, improved rear control arms, a Panhard bar, and much more. The difference in performance from a stock suspension is amazing.
Choose between 3 different damper brands; MM, Koni, or Bilstein. All are excellent.
- MM Street dampers are most suitable for upgrading to coil-overs. The MM strut housing is the most robust available, and is preferred for track use. The MM shock has the largest-diameter shaft for best performance and durability. Excellent performance and ride quality.
- Koni SA dampers are adjustable, for those who know how to evaluate handling and make the proper adjustments to optimize the dampers. Easy conversion to coil-overs.
- Bilstein HD dampers provide great performance and good ride quality. Shocks require modification to convert to coil-overs.
The heart of your Mustang's high-performance handling is the combination of springs and dampers. We've made things easy by already basing this package around our own Road & Track springs. These progressive springs have a front rate of 650-750 lb/in. That's as high as we ever recommend for a street-driven Mustang, and is only slightly higher than the stock spring rates of the Bullitt, Mach One, and 2003-04 Cobra models.
Rear Lower Control Arms
Choose the series of MM rear lower control arms. The differences between the 3 different series are in the bushings used and the horsepower rating. Each series has an adjustable ride-height version; specify the control arm part number in the comments field at checkout.
- Sport series are rated to 400rwhp, with urethane bushings at both ends.
- Heavy-Duty series are rated to 400rwhp, with a spherical bearing at one end for better axle control.
- Extreme-Duty series are rated up to 1,000rwhp (600 rwhp for the adjustable-height version) because there are spherical bearings at both ends.
What does the Road & Track Box do?
It improves your Mustang's handling to the highest level possible for the stock suspension design. When you want your Mustang to handle optimally for the stock design while retaining street manners, you need the Road & Track Box. The Road & Track Box gives you faster and more stable cornering, which means more fun!
- Improves handling
- Quickens steering response
- Retains daily driving ride quality
- Allows aggressive performance alignment settings or setting the alignment within OEM specification
- Improves cornering grip
- Provides greater stability
- Vastly improves predictability
- Reduces wheel hop
- Restores front bump travel after lowering
- Increases chassis rigidity
- Reduces bushing compliance
The base level 1999-2004 Mustang Road & Track Box includes:
- Choice of dampers
- Caster Camber Plates
- Full-length Subframe Connectors
- Choice of Rear Lower Control Arms
- Solid Steering Shaft
- Strut Tower Brace
- Panhard Bar
- Front Swaybar Bushings
- Road & Track Springs
- Urethane front spring isolators & rear spring isolators
- Urethane pinion snubber
- 4-Point K-Member Brace
- Solid Steering Rack Bushings
- Front Swaybar End Links
- Urethane front control arm bushings
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