Additional Images

MM K-member, Mustang, 2005-2014

Please Call for Availability


MM K-member for 2005-2014 Mustangs. This new MM design achieved not only our primary design goal of improved handling performance for a lowered Mustang, but it also met all of our secondary goals.

Design Goals Achieved

  • Optimized roll center height for a Mustang lowered to the limit of the American Iron rules.
  • Stronger and stiffer than stock k-member, to allow less deflection under cornering and braking loads.
  • Fits stock motor mounts, for least change in NVH
  • Fits stock front control arms, with stock or aftermarket bushings
  • Fits both electric and hydraulic steering racks
  • Allows easy oil pan removal without requiring additional engine support
  • Upgradable to SLA suspension


  • Bumpsteer kit. If you do not already have a suitable bumpsteer kit, the Mm5TR-2 can be purchased as an "option" with this MM k-member.
  • Some means to support the engine during installation. MM's engine support MMT-11 can be purchased as an "option" with this MM k-member.

Not compatible with extended-length ball joints.

Related Parts

  • Bumpsteer kit. A bumpsteer kit is required with the Mm5KM-7.
  • Bumpsteer gauge. This gauge makes proper installation of the bumpsteer kit easy.
  • Manual transmission cooler scoop. Swap the standard brace for the Mm5KB2-21 scoop brace
  • Engine support beam. Makes installation easier and faster.
  • Lightweight radiator core support.
  • Core support brace/adjustable mount for swaybar.
  • Extreme Lowering Kit with spacer and bolt-through bumpsteer kit to allow use of upper control arm pivot holes. Not yet available.


  • Improved cornering ability due to raised roll center height.
  • Improved turn-in response and more precise control due to increased rigidity. This MM k-member has 30% less lateral deflection than a stock k-member has at the same cornering load.
  • No need to buy new front control arms; the robust stock control arms are used.
  • No change in NVH (noise, vibration, harshness) when stock motor mounts are used.
  • No change in NVH when stock front control arm bushings are used.
  • Increased rigidity improves front end stability and predictability.
  • Allows oil pan removal without the need for hanging the engine from a support beam.
  • Has provision for mounting upper control arms, for a future upgrade to an SLA suspension.


  • Control arm pivot standard location is 5/8" higher than stock, with second set of holes 1-3/8" higher than stock.
  • DOM steel tube construction
  • Includes 2-point brace to stabilize rearward control arm mounts
  • Weight: 42.5 lbs.
  • Compatible with aftermarket front control arm bushings
  • Works with both S197 steering rack types, hydraulic and electric
  • Has mounting brackets for MM radiator core support brace that also serves as an adjustable mount for the front swaybar.
  • Compatible with stock 2011-2014 radiator core support brace (minor modification to the OEM brace required).
  • Durable black powdercoat finish
  • Mounting points for future addition of an SLA upper control arm



  • 2005-2014 Mustang
  • Stock motor mounts
  • Urethane replacement motor mounts
  • Stock front control arms, 2005-2014
  • Stock front control arm bushings
  • Aftermarket replacement control arm bushings, urethane and Delrin
  • 2005-2010 hydraulic steering rack
  • 2011-2014 electric steering rack

Does NOT fit:

  • Extended-length ball joints because the bumpsteer spacers required with an extended-length ball joint cause the tie-rod to exceed its angularity range.



Shipping Information

  • Item Requires Shipping

Customer Reviews

Comment Total Reviews (0)

Write the First Review!

You must login to post a review.