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MM Bumpsteer Kits

Bumpsteer kits are used to adjust and correct the bumpsteer on your Mustang.

What is "bumpsteer"?
  • Changes in the steering angle of the tires caused solely by vertical motion of the suspension.
  • Excessive bumpsteer makes the car feel unstable and unpredictable because it will abruptly change direction without any input from the driver.
  • Bumpsteer can be caused by anything that causes the suspension to move vertically; bumps in the road, body roll, brake dive, etc.
Which style: Bolt-through spindle or Tapered stud?
  • Bolt-through style is for MM K-members that require a larger range of adjustment.
  • Tapered-stud style is for stock and other k-members that require only a moderate range of adjustment.
For details, technical information, or to purchase, click on the appropriate bumpsteer kit for your Mustang below.
Displaying 1 - 10 of 10 results  
Product ImageProduct(s)Part #
Bumpsteer kit, 2005-2014 Mustang, tapered-stud style

Bumpsteer kit, 2005-2014 Mustang, tapered-stud style

Larger Image Bumpsteer kit with adjustable outer tie-rod ends for correcting bumpsteer on 2005-2014 Mustang. Tapered-stud style. Fits both 2005-2010 Mustang steering rack and 2011-2014 Mustang electric power steering rack. ...
Mm5TR-2
$189.97
more info
Bumpsteer kit, 1994-04 Mustang, bolt-through style

Bumpsteer kit, 1994-04 Mustang, bolt-through style

Larger Image Adjustable outer tie-rod ends for correcting bumpsteer, Bolt-through spindle style, 1994-04 Mustang Fits 1994-04 Mustang with 1994-04 front control arms All stock power steering racks, 1994-04 All Mustang...
MMTR-3
$189.97
more info
Bumpsteer kit, 1994-04 Mustang, tapered-stud style

Bumpsteer kit, 1994-04 Mustang, tapered-stud style

Larger Image Adjustable outer tie-rod ends for correcting bumpsteer, Tapered-stud style, 1994-04 Mustang Fits 1994-04 Mustang with stock k-member and 1994-04 front control arms All stock power steering racks, 1994-04 All...
MMTR-4
$189.97
more info
Bumpsteer kit, 1979-93 Mustang, bolt-through style

Bumpsteer kit, 1979-93 Mustang, bolt-through style

Larger Image Adjustable outer tie-rod ends for correcting bumpsteer, Bolt-through spindle style, 1979-93 Mustang Fits 1979-93 Mustang with 1979-93 front control arms All stock power steering racks, 1979-93 All manual...
MMTR-1
$189.97
more info
Bumpsteer kit, 1979-93 Mustang, tapered-stud style

Bumpsteer kit, 1979-93 Mustang, tapered-stud style

Larger Image Adjustable outer tie-rod ends for correcting bumpsteer, Tapered-stud style, 1979-93 Mustang Fits 1979-93 Mustang with stock k-member and 1979-93 front control arms All stock power steering racks, 1979-93 All...
MMTR-2
$189.97
more info
Bumpsteer kit, 1979-93 Mustang with SN95 control arms, bolt-through style

Bumpsteer kit, 1979-93 Mustang with SN95 control arms, bolt-through style

Larger Image Adjustable outer tie-rod ends for correcting bumpsteer, Bolt-through spindle style, 1979-93 Mustang with SN95 front control arms Fits 1979-93 Mustang with 1994-04 front control arms All stock power steering...
MMTR-6
$189.97
more info
Bumpsteer kit, 1979-93 Mustang with SN95 control arms, tapered-stud style

Bumpsteer kit, 1979-93 Mustang with SN95 control arms, tapered-stud style

Larger Image Adjustable outer tie-rod ends for correcting bumpsteer, Tapered-stud style, 1979-93 Mustang with SN95 front control arms Fits 1979-93 Mustang with stock k-member and 1994-04 front control arms All stock power...
MMTR-7
$189.97
more info
Bumpsteer Gauge

Bumpsteer Gauge

Bumpsteer gauge measures bumpsteer. Required when adjusting bumpsteer.
MMT-4
$199.97
more info
Conversion kit from tapered stud to bolt-through spindle

Conversion kit from tapered stud to bolt-through spindle

Larger Image Converts tapered-stud style bumpsteer kit to bolt-through spindle style Fits 1979-04 Mustang with MMTR-2, MMTR-4, and MMTR-7 bumpsteer kits Other brands of tapered-stud style bumpsteer kits for 1979-04...
MMTR-5
$89.97
more info
Small Spacer Kit for MM Bumpsteer Kits

Small Spacer Kit for MM Bumpsteer Kits

Replacement spacers for MM bumpsteer kits MMTR-1 through MMTR-7. Includes the small spacers (those under 0.5” in height).
MMTRspacer
$39.97
more info