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| 3987 First Street, Suite G, Livermore, CA 94551 | PHONE: (925)292-5522 | |||||||
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FAX: (925)292-5524
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E-MAIL: Sales@LivermorePerformance.com
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| Back | Home | Click here for a preview of our future Website and for a limited selection of items that can be ordered On-Line. |
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| Car Specific Products |
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| Maximum Motorsports | ||||
| Chassis Brace Packages | K-Member Braces | Subframe Connectors | ||
| IRS HD Crossmember | Strut Tower Braces | Subframe Reinforcements | ||
Chassis Stiffening This is the first area we recommend you upgrade when you begin modifying your Mustang. A sturdy chassis is critical to provide a good platform for future suspension improvements to your car. |
| MM's Chassis Brace Packages include your choice of subframe connectors, Standard or XL series (bare steel or powdercoated), four point K-Member brace, and a strut tower brace. There are many different packages available to cover the different year models of Mustang. Each part in the package will be correct for the listed year models and listed features, regardless of the photos showing similar packages for different vehicles. | ||||
| MM Chassis Brace Packages Include: MM Strut Tower Brace* MM 4-Point K-Member Brace** MM Subframe Connectors (Your Choice) |
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| This photo shows standard length subframe connectors. | This photo shows full length subframe connectors. | |||
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*Chrome: Available with a triple-plated chrome finish for an additional $120. **Automatic Transmissions: The 4-Point K-Member Brace may have a slight interference with the automatic transmission's cooler lines. These lines can be relocated slightly. -Call for information on possible clearance problems with the K-Member braces and long tube headers. |
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| Back | Livermore Performance (925)292-5522 | Top of Page |
| K-Member Braces The Mustang's K-member is the mounting point for the front control arms, the steering rack, and the engine. It is a critical structural member because it carries the loads into the chassis from the front suspension. While the heavy stock K-member is a rather stout item, it still is not capable of handling all of the suspension forces directed into it from the front control arms. During cornering, the forces from the control arms cause the K-member to deflect, resulting in alignment changes. The MM 4-Point K-Member brace eliminates K-member flexing by bracing across the K-member, from one side of it to the other, as well as connecting to the rear most chassis mounting points of the K-member. The position of the MM brace provides a direct load path into the chassis for the cornering loads from the control arms. This bracing is done at the rear of the K-member (the area of greatest deflection). In 1994 Ford made a 2-point K-member brace standard equipment on the 5.0L Mustang. All V-8 Mustangs continued to come with 2-point braces through 2004. It seems that Ford agrees with us; the Mustang needs a K-member brace! |
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| Four-Point Braces * The front of the MM brace mounts to the bottom of the K-member. The rearward points of the brace mount at the K-Member-to-chassis mounting points. * The MM K-Member Brace's design includes a structural steel web. This splits the suspension loads. Part of the load goes into the unibody at the rearward K-member to chassis mounting points, and part goes straight across the K-member to the opposite side. * The mounting bolts for the brace attach through a structural tube. Unlike commonly used flat tabs, the suspension loads pass into the MM brace without deflecting the mounts. * Note: 4-Point braces will not clear long-tube headers. MMKB2-2 will clear most long-tube headers. |
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| MMKB4-3 & MMKB4-4 | |||
| MMKB4-1 & MMKB4-2 | |||
| Two-Point Braces MMKB2-2 will clear most long-tube headers. On 1979-93 Mustangs, the 4-point K-Member Brace (MMKB4-1) and 2-point brace (MMKB2-1) may have slight interference with automatic transmission cooler lines. These lines can simply be relocated slightly, or use 2-Point K-Member Brace MMKB2-2. |
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| MMKB2-1 | MMKB2-2 | |||
| Back | Livermore Performance (925)292-5522 | Top of Page |
| Strut-Tower Braces The MM Strut Tower Brace will make your car's handling more stable and predictable by stiffening the front portion of the chassis. MM's unique strut tower brace design provides a load path between the two individual strut towers and between each strut tower and the firewall. This keeps the strut towers from moving relative to each other. Flexing of the strut towers, both fore/aft and side-to-side, causes unpredictable handling because the flexing causes alignment changes and a lack of roll coupling. A MM Strut Tower Brace will prevent the alignment from changing during hard braking and cornering. An additional benefit of increased chassis rigidity from the strut tower brace is a reduction in firewall and dashboard vibration, metal fatigue, and noise. Ford finally recognized the benefits and started installing strut tower braces beginning with the 1994 models. |
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Unique Features of Maximum Motorsports Strut Tower Braces: * MM's main tubes are made of rigid 1-1/4" diameter DOM seamless tubing. This tubing is twice as stiff as the generally used 1" tubing, and DOM seamless tubing is 30% stiffer than the more commonly used ERW, seamed tubing. * The firewall mounting point for the rear support tubes is the pinchweld that runs the width of the firewall. When attaching something to sheet metal, the best mounting point is at a joint or a corner, such as the pinchweld on the Mustang's firewall. The pinchweld on the firewall was formed by folding together three pieces of metal (the upper firewall, the lower firewall, and the floor of the cowl), and then welding them together. This provides an extremely stiff mounting point for our Strut Tower Brace. * Nearly all other strut tower braces attach to the center of the firewall, its weakest and most flexible portion. Attaching there adds little stiffness, and leads to cracking and tearing of the firewall. * On 5.0L engines, MM's Strut Tower Brace allows the use of all popular intake manifolds because no part of the brace passes over the top of the intake manifold. * MM Strut Tower Braces are designed to allow the use of MM Caster/Camber plates. * MM Strut Tower Braces are attached with high quality grade 5 hardware. |
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| Subframe Connectors All suspension loads go through the front and rear subframes and into the central unibody structure. The Mustang unibody bends and flexes because the front and rear subframes of the car are connected by the unsupported and flexible center portion of the floor pan. Maximum Motorsports subframe connectors are welded to the bottom of the unibody, connecting the front and rear subframes and supplying more structure than is provided by the floor pan. This increased structure reduces the amount of bending and twisting in the chassis. |
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Standard Subframe Connectors MM subframe connectors securely weld to the front and rear subframes of your Mustang. (Bolt-on connectors do not work because the bolts cannot be properly tightened due to the lack of structure in the car’s subframes.) MM's standard subframe connectors are made of 1" x 2" rectangular tubing, with .120" wall thickness - over 40% stiffer than other well-known brands. Rectangular tubing provides more weld area, as well as increased ground clearance, compared to round tubing. MM's seal the tubing by welding on end caps to prevent them from rusting from the inside out. The MM connectors have a cross brace used to reinforce the crack-prone area of the floor pan where the seats attach. MM connectors are custom shaped to hug the floor pan of your Mustang for maximum ground clearance. |
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XL Series Full Length Connectors New!! The XL Series Full-length Subframe Connectors are now available exclusively from MM. We have improved on the original MM Full-length Subframe Connector design with these extra-long, extra-strong subframe connectors. Maximum Motorsports was the originator of full-length subframe connectors. We have now improved on our original design by increasing the length and height of the connector tube. The resulting XL Series connector is much stiffer than any other subframe connector. The MM XL Series Full-length Subframe Connectors stiffen your chassis far more than our standard connectors. The taller tubing of the new XL Series creates a connector that is 95% stiffer than the standard subframe connector. The XL connector tubing is 53% stiffer than our previous Full-length subframe connectors. Beware of connectors from companies who lack the engineering expertise to design their own products. Some have copied our previous design. The new XL Series connectors are 53% stiffer than those copies. |
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The new XL Series Full-length Subframe Connectors extend from the rear lower control arm attachment point on the rear subframe all the way up to the firewall. This provides substantially more weld area between the connector and the chassis. At 65", the extra length, increased number of attachment points, and extra height in the tubing make this the stiffest subframe connector available. The XL Series Full-length Subframe Connectors are made of 1.5" x 2" x .083" wall thickness rectangular tubing. The thinner wall tubing is used to lessen the weight, while the taller dimension increases stiffness by 95% over our standard connectors. We add reinforcing plates at each bend to prevent the flexing which would otherwise occur with the thinner wall tubing. 1996-98 Cobras will require modifications to the transmission crossmember mounting flanges. See supplemental information about this in the consumer instructions that can be viewed here. |
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Notes: **) On a 1996 - 98 Cobra, the brackets that the transmission crossmember attaches to must be slightly modified. This modification does not interfere with transmission removal. |
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| MM Subframe Reinforcements | Description | P/N | Price/set |
| Mustang | MM Subframe Reinforcements | MMSFA-1 | $48 |
| Back | Top of Page | |
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Livermore Performance, Inc. 3987 First Street, Suite G, Livermore CA 94551 Phone: (925)292-5522 E-mail: Sales@LivermorePerformance.com |
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