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Qa1

QA1 79-04 Ford Mustang Upper Adjustable Trailing Arms

SKU: QAP5255

Control Arms

QAP Trailing Arms

Qa1

QA1 79-04 Ford Mustang Upper Adjustable Trailing Arms

SKU: QAP5255

Control Arms

QAP Trailing Arms

A$819.92
LOW STOCK! Est Ship 3-5 days. HURRY! LOW STOCK. This item is in limited stock at one of our distribution centres. The ETA is the approximate time required to prepare your order for dispatch.
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Description

QA1 offers upper and lower rear trailing arms for Ford and GM applications in boxed, tubular, and heavy-duty adjustable options. All upper tubular and lower boxed trailing arms use polyurethane bushings on both ends, while upper adjustable and lower tubular trailing arms use a spherical ball or rod end assembly on the chassis end to eliminate bushing bind, allowing the suspension to move smoother for better control. They are powdercoated or zinc plated and anodized for a long-lasting finish. Keep your tires planted firmly on the ground for improved traction and a more predictable, better handling car with a set of QA1 rear trailing arms.

Features may include:

* Boxed trailing arms are constructed from 0.120 in. wall cold rolled steel tubing for maximum strength and flex elimination.
* Tubular trailing arms are constructed from 1 1/4 in. diameter, 0.120 in. wall steel tubing which offers increased strength over other designs, but also have the added advantage of lighter weight.
* Boxed and tubular styles feature fluted, greasable polyurethane bushings, which are superior to the stock rubber bushings.
* Heavy-duty adjustable trailing arms allow easy rear suspension adjustments for optimum handling and traction. Simply loosen the jam nuts and adjust the pinion angle without removing the arms from the vehicle. They replace soft OE differential bushings with polyurethane differential bushings, and they use a spherical ball or rod end assembly with UHMW polyethylene bushings on the chassis end
* Adjustable styles are available in aluminum and steel options

Product Overview

All upper tubular and lower boxed trailing arms use polyurethane bushings on both ends, while upper adjustable and lower tubular trailing arms use a spherical ball or rod end assembly on the chassis end to eliminate bushing bind, allowing the suspension to move smoother for better control. This keeps the tires planted firmly on the ground for improved traction and a more predictable, better handling car. Trailing arms are powder-coated gloss black for a long lasting finish. Boxed Trailing Arms are constructed from 0.120'' wall cold rolled steel tubing for maximum strength and flex elimination. These trailing arms have fluted, greasable polyurethane bushings, which are superior to the stock rubber bushings. Tubular Trailing Arms are constructed from 1-1/4'' diameter, 0.120'' wall steel tubing which offers increased strength over other designs but also has the added advantage of lighter weight. These trailing arms have fluted, greasable polyurethane bushings, which are superior to the stock rubber bushings. Heavy-Duty Adjustable Trailing Arms allow easy rear suspension adjustments for optimum handling and traction. Simply loosen the jam nuts and adjust the pinion angle without removing the arms from the vehicle. They replace soft OE differential bushings with polyurethane differential bushings, and they use a spherical ball or rod end assembly with UHMW polyethylene bushings on the chassis end to allow the rear suspension to move more freely and eliminate bushing bind. Adjustable Tubular Lower Trailing Arms are offered in both aluminum and steel. These arms are the ultimate in weight savings and adjustability, and they feature QA1's premium self-sealing and self-lubricating X Series (heat treated chromoly steel) or A Series (aircraft aluminum) rod ends. Kits include (2) lower control arms with rod ends and jam nuts. All parts sold in pairs.


Features and Benefits

  • Direct fit options for many popular GM, Ford & Mopars
  • Adjustable arms offer easy wheelbase and pinion angle adjustment
  • Easy, bolt-in install
  • Made in the USA

Product Details

Brand:QA1
Description:QA1 79-04 Ford Mustang Upper Adjustable Trailing Arms
Manufacturer Part Number:5255
Part Number:qap5255
Prop 65 - Short Label:WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov
Prop 65 Yes/No:Yes
Title:QA1 Suspension Trailing Arm 5255
UPC:806990064592

Kit Options

This item is available as a full kit.
Select a kit option in the following table if you are looking for this item in a bundle form with all associated components.

Kit option/s:

Thumb SKU Kit Title
qapDK31-FMM2 QA1 79-93 Ford Mustang Level 1 Drag Kit w/o Shocks (1x qap5221, 1x qap5255, 1x qap52885)
qapDK31-FMM3 QA1 94-95 Ford Mustang Level 1 Drag Kit w/o Shocks (1x qap5221, 1x qap5255, 1x qap52885)
qapDK31-FMM4 QA1 96-04 Ford Mustang Level 1 Drag Kit w/o Shocks (1x qap5221, 1x qap5255, 1x qap52885)
qapDK42-FMM1 QA1 79-86 Ford Mustang Level 2 Drag Kit w/ Shocks (1x qap5221, 1x qap5255, 1x qap52885, 1x qapBAX104M, 1x qapMUK01, 1x qapHD01-14150, 1x qapRCK52405, 1x qap52540)
qapDK42-FMM2 QA1 87-89 Ford Mustang Level 2 Drag Kit w/ Shocks (1x qap5221, 1x qap5255, 1x qap52885, 1x qapBAX102, 1x qapMUK02, 1x qapHD01-14150, 1x qapRCK52405, 1x qap52540)
qapDK42-FMM3 QA1 90-93 Ford Mustang Level 2 Drag Kit w/ Shocks (1x qap5221, 1x qap5255, 1x qap52885, 1x qapBAX102, 1x qapMUK02, 1x qapHD02-14150, 1x qapRCK52405, 1x qap52540)
qapDK42-FMM4 QA1 94-04 Ford Mustang Level 2 Drag Kit w/ Shocks (1x qap5221, 1x qap5255, 1x qap52885, 1x qapBAX104, 1x qapMUK02, 1x qapHD03-14150, 1x qapRCK52405, 1x qap52541)
qapDK43-FMM1 QA1 79-86 Ford Mustang Level 3 Drag Kit w/ Shocks (1x qap5221, 1x qap5255, 1x qap52885, 1x qapBAX104M, 1x qapMUK01, 1x qapT121W, 1x qapHD01-14150, 1x qapRCK52409, 1x qap52540)
qapDK43-FMM2 QA1 87-89 Ford Mustang Level 3 Drag Kit w/ Shocks (1x qap5221, 1x qap5255, 1x qap52885, 1x qapBAX102, 1x qapMUK02, 1x qapT121W, 1x qapHD01-14150, 1x qapRCK52409, 1x qap52540)
qapDK43-FMM3 QA1 90-93 Ford Mustang Level 3 Drag Kit w/ Shocks (1x qap5221, 1x qap5255, 1x qap52885, 1x qapBAX102, 1x qapMUK02, 1x qapT121W, 1x qapHD02-14150, 1x qapRCK52409, 1x qap52540)
qapDK43-FMM4 QA1 94-04 Ford Mustang Level 3 Drag Kit w/ Shocks (1x qap5221, 1x qap5255, 1x qap52885, 1x qapBAX104, 1x qapMUK02, 1x qapT121W, 1x qapHD03-14150, 1x qapRCK52409, 1x qap52541)
qapHK42-FMM1 QA1 79-86 Ford Mustang Level 2 Handling Kit w/ Shocks (1x qap5221, 1x qap5255, 1x qap52892, 1x qapBAX104M, 1x qapMUK01, 1x qapHD01-12200, 1x qapRCK52407, 1x qap52740)
qapHK42-FMM2 QA1 87-89 Ford Mustang Level 2 Handling Kit w/ Shocks (1x qap5221, 1x qap5255, 1x qap52892, 1x qapBAX102, 1x qapMUK02, 1x qapHD01-12200, 1x qapRCK52407, 1x qap52740)
qapHK42-FMM3 QA1 90-93 Ford Mustang Level 2 Handling Kit w/ Shocks (1x qap5221, 1x qap5255, 1x qap52892, 1x qapBAX102, 1x qapMUK02, 1x qapHD02-12200, 1x qapRCK52407, 1x qap52740)
qapHK42-FMM4 QA1 94-04 Ford Mustang Level 2 Handling Kit w/ Shocks (1x qap5221, 1x qap5255, 1x qap52886, 1x qapBAX104, 1x qapMUK02, 1x qapHD03-12200, 1x qapRCK52407, 1x qap52741)
qapHK43-FMM1 QA1 79-86 Ford Mustang Level 3 Handling Kit w/ Shocks (1x qap5221, 1x qap5255, 1x qap52892, 1x qapBAX104M, 1x qapMUK01, 1x qapT121W, 1x qapHD01-12300, 1x qapRCK52411, 1x qap52540)
qapHK43-FMM2 QA1 87-89 Ford Mustang Level 3 Handling Kit w/ Shocks (1x qap5221, 1x qap5255, 1x qap52892, 1x qapBAX102, 1x qapMUK02, 1x qapT121W, 1x qapHD01-12300, 1x qapRCK52411, 1x qap52540)
qapHK43-FMM3 QA1 90-93 Ford Mustang Level 3 Handling Kit w/ Shocks (1x qap5221, 1x qap5255, 1x qap52892, 1x qapBAX102, 1x qapMUK02, 1x qapT121W, 1x qapHD02-12300, 1x qapRCK52411, 1x qap52540)
qapHK43-FMM4 QA1 94-04 Ford Mustang Level 3 Handling Kit w/ Shocks (1x qap5221, 1x qap5255, 1x qap52886, 1x qapBAX104, 1x qapMUK02, 1x qapT121W, 1x qapHD03-12300, 1x qapRCK52411, 1x qap52541)

Part Type

Suspension Trailing Arm

Data: v4.2 - Upd: 2026-10-03 09:48:34

Features

  • Adjustable arms offer easy wheelbase and pinion angle adjustment
  • Direct fit options for many popular GM, Ford & Mopars
  • Easy, bolt-in install
  • Made in the USA

Specifications

Product Attributes - Brand
QA1
Product Attributes - Manufacturer's Part Number
5255
Product Attributes - Part Type
Control Arms
Product Attributes - Product Line
QA1 Rear Trailing Arms
Product Attributes - UPC
806990064592
Product Attributes - Control Arm Style
Tubular
Product Attributes - Control Arm Material
Aluminum/Steel
Product Attributes - Ball Joint Included
No
Product Attributes - Bushings Included
Yes
Product Attributes - Control Arm Color
Red
Product Attributes - Adjustable
Yes
Product Attributes - Hardware Included
Yes
Product Attributes - Bushing Material
Polyurethane
Product Attributes - Quantity
Sold as a pair.

Reference Information

Brand Name/s Qa1
StreetFX SKU qap5255
SFX Item ID 4092459
Supplier Item Code 4092459
Manufacturer SKU 5255
Manufacturer UPC 806990064592
Alternative References qa1, QA15255

Brochures

Compatibility

Application Data
  • UniversalNo
    Control Arm PositionRear Upper
    MakeFORD
    ModelMUSTANG
    SubmodelCOBRA
    Beginning Year1981
    Ending Year1981
    DrivetrainRWD
  • UniversalNo
    Control Arm PositionRear Upper
    MakeFORD
    ModelMUSTANG
    SubmodelGHIA
    Beginning Year1979
    Ending Year1981
    DrivetrainRWD
  • UniversalNo
    Control Arm PositionRear Upper
    MakeFORD
    ModelMUSTANG
    SubmodelGL
    Beginning Year1982
    Ending Year1983
    DrivetrainRWD
  • UniversalNo
    Control Arm PositionRear Upper
    MakeFORD
    ModelMUSTANG
    SubmodelGLX
    Beginning Year1982
    Ending Year1983
    DrivetrainRWD
  • UniversalNo
    Control Arm PositionRear Upper
    MakeFORD
    ModelMUSTANG
    SubmodelGT-350 20TH ANNIVERSARY
    Beginning Year1984
    Ending Year1984
    DrivetrainRWD
  • UniversalNo
    Control Arm PositionRear Upper
    MakeFORD
    ModelMUSTANG
    SubmodelGT
    Beginning Year1982
    Ending Year2004
    DrivetrainRWD
  • UniversalNo
    Control Arm PositionRear Upper
    MakeFORD
    ModelMUSTANG
    SubmodelGT BULLITT
    Beginning Year2001
    Ending Year2001
    DrivetrainRWD
  • UniversalNo
    Control Arm PositionRear Upper
    MakeFORD
    ModelMUSTANG
    SubmodelGTS
    Beginning Year1995
    Ending Year1995
    DrivetrainRWD
  • UniversalNo
    Control Arm PositionRear Upper
    MakeFORD
    ModelMUSTANG
    SubmodelL
    Beginning Year1982
    Ending Year1984
    DrivetrainRWD
  • UniversalNo
    Control Arm PositionRear Upper
    MakeFORD
    ModelMUSTANG
    SubmodelLX
    Beginning Year1984
    Ending Year1993
    DrivetrainRWD
  • UniversalNo
    Control Arm PositionRear Upper
    MakeFORD
    ModelMUSTANG
    SubmodelMACH 1
    Beginning Year2003
    Ending Year2004
    DrivetrainRWD
  • UniversalNo
    Control Arm PositionRear Upper
    MakeFORD
    ModelMUSTANG
    SubmodelSVO
    Beginning Year1984
    Ending Year1986
    DrivetrainRWD
  • UniversalNo
    Control Arm PositionRear Upper
    MakeFORD
    ModelMUSTANG
    SubmodelSVT COBRA
    Beginning Year1993
    Ending Year1998
    DrivetrainRWD
  • UniversalNo
    Control Arm PositionRear Upper
    MakeFORD
    ModelMUSTANG
    SubmodelSVT COBRA R
    Beginning Year1993
    Ending Year1993
    DrivetrainRWD
  • UniversalNo
    Control Arm PositionRear Upper
    MakeFORD
    ModelMUSTANG
    SubmodelSVT COBRA R
    Beginning Year1995
    Ending Year1995
    DrivetrainRWD
  • UniversalNo
    Control Arm PositionRear Upper
    MakeFORD
    ModelMUSTANG
    SubmodelTURBO GT
    Beginning Year1983
    Ending Year1983
    DrivetrainRWD
  • UniversalNo
    Control Arm PositionRear Upper
    MakeMERCURY
    ModelCAPRI
    Submodel5.0
    Beginning Year1986
    Ending Year1986
    DrivetrainRWD
  • UniversalNo
    Control Arm PositionRear Upper
    MakeMERCURY
    ModelCAPRI
    SubmodelBASE
    Beginning Year1979
    Ending Year1982
    DrivetrainRWD
  • UniversalNo
    Control Arm PositionRear Upper
    MakeMERCURY
    ModelCAPRI
    SubmodelBLACK MAGIC
    Beginning Year1982
    Ending Year1983
    DrivetrainRWD
  • UniversalNo
    Control Arm PositionRear Upper
    MakeMERCURY
    ModelCAPRI
    SubmodelCRIMSON CAT
    Beginning Year1983
    Ending Year1983
    DrivetrainRWD
  • UniversalNo
    Control Arm PositionRear Upper
    MakeMERCURY
    ModelCAPRI
    SubmodelGHIA
    Beginning Year1979
    Ending Year1980
    DrivetrainRWD
  • UniversalNo
    Control Arm PositionRear Upper
    MakeMERCURY
    ModelCAPRI
    SubmodelGS
    Beginning Year1981
    Ending Year1986
    DrivetrainRWD
  • UniversalNo
    Control Arm PositionRear Upper
    MakeMERCURY
    ModelCAPRI
    SubmodelL
    Beginning Year1982
    Ending Year1983
    DrivetrainRWD
  • UniversalNo
    Control Arm PositionRear Upper
    MakeMERCURY
    ModelCAPRI
    SubmodelRS
    Beginning Year1982
    Ending Year1985
    DrivetrainRWD
  • UniversalNo
    Control Arm PositionRear Upper
    MakeMERCURY
    ModelCAPRI
    SubmodelRS TURBO
    Beginning Year1984
    Ending Year1984
    DrivetrainRWD

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