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Qa1

QA1 79-93 Ford Mustang LS Tubular K-Member

SKU: QAPMUK21

K-Members

QAP K-Member...

Qa1

QA1 79-93 Ford Mustang LS Tubular K-Member

SKU: QAPMUK21

K-Members

QAP K-Member...

A$1,830.66
LOW STOCK! Est Ship 4-7 days. In stock at 1 location (3 available)

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Description

QA1 79-93 Ford Mustang LS Tubular K-Member

QA1's tubular K-members are designed to allow owners of 1979-2004 Mustangs to use the engine of their choice while enjoying the significant weight savings, increased header clearance, and improved geometry provided by a QA1 K-member. , , This K-member is designed for 79-93 Mustangs with an LS motor swap. Bolt-In Design, All mounting points have been digitally indexed from new, factory K-members., Made from High-Quality American-Made HSLA Steel, Weight Savings, At over 50% lighter than the stock K-member, the entire QA1 K-member weighs only 25lbs.!, Increased Header Clearance, Header and oil pan clearance maximized for easier maintenance and installation., Modular Design for Versatility, Bolt-in engine mounts that can be easily swapped out for future engine changes., Improved Geometry, Ideal for street performance, autocross, pro touring or drag racing, these K-members maintain optimum anti-dive geometry and minimize bump steer issues on Mustangs with a lowered stance. And because they retain the factory wheel base, these K-members easily bolt on to factory components without any wheel or tire fitment changes. , For best results, QA1 control arms are strongly recommended.

Additional Information

Tubular K-member for 79-93 Mustang with an LS swap.

Part Type

Suspension Crossmember

Additional Application Notes
• Motor Mounts fit LS engine

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.

Data: v4.2 - Upd: 2026-11-08 22:58:19

Features

  • Enhance performance & reduce weight
  • Enhanced geometry
  • Increase header clearance
  • Made in the USA
  • Maintain factory track width
  • Multiple engine mounting options

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Product Details

Brand:QA1
Description:QA1 79-93 Ford Mustang LS Tubular K-Member
Manufacturer Part Number:MUK21
Part Number:qapMUK21
Title:QA1 Engine Crossmember MUK21
UPC:806990151612

Product Downloads

# Document Type Download
1. Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Data: v2 - Desc: v4.2 - Upd: 2026-11-08 13:43:31

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Qa1
StreetFX SKU qapMUK21
SFX Item ID 4094945
Accounting SKU qap-MUK21
Manufacturer SKU MUK21
Manufacturer UPC 806990151612
Alternative References MUK21, QA1-MUK21

K-Members, Tubular, HSLA Steel, Black Powdercoated, Includes Mounts, LS Engine Swap, Ford, Mustang, Each

Replace your heavy stock K-member with one of these tubular QA1 Mustang K-members and, in addition to the weight savings, you'll get better steering geometry, less bump steer, reduced dive under braking, and quicker straight-line performance. Ideal for street performance, autocross, pro touring or drag racing, they easily bolt onto factory components without any wheel or tire fitment changes.

Features and benefits include:
• All mounting points are digitally-indexed from new factory K-members
• Made from high-quality, American-made, high-strength, low-alloy steel (HSLA) steel
• Weighs only 25 lbs.--over 50 percent lighter than stock K-members
• Increased header and oil pan clearance for easier maintenance and installation
• Modular design for versatility--bolt-in engine mounts can easily be swapped for future engine changes
• Improved geometry--maintains optimum anti-dive and minimizes bump steer with selectable rack height and optimal control arm positioning
• Ideal for Mustangs with a lowered stance
• Retain the factory wheel base

Note: For best results, QA1 control arms are strongly recommended

Product Attributes
BrandQA1
Manufacturer's Part NumberMUK21
Part TypeK-Members
Product LineQA1 Mustang K-Members
UPC806990151612
K-Member MaterialSteel
K-Member ColorBlack
Control Arms IncludedNo
Coilover Springs IncludedNo
Motor Mounts IncludedYes
Steering Rack IncludedNo
QuantitySold individually.

Manufacturer Attributes
Title QA1 Engine Crossmember MUK21
Brand QA1
Manufacturer Part Number MUK21
UPC 806990151612
Manufacturer Designation K-Member, Mustang 79-93 Mustang Ls, Tubular
Product Class Engine Crossmember
Construction/Type Tubular K-member for 79-93 Mustang with an LS swap.
Product Outline Enhance performance & reduce weight
Increase header clearance
Enhanced geometry
Maintain factory track width
Multiple engine mounting options
Made in the USA
Vehicle Brief QA1 Mustang K-Member
Market Description QA1's tubular K-members are designed to allow owners of 1979-2004 Mustangs to use the engine of their choice while enjoying the significant weight savings, increased header clearance, and improved geometry provided by a QA1 K-member. , , This K-member is designed for 79-93 Mustangs with an LS motor swap. Bolt-In Design, All mounting points have been digitally indexed from new, factory K-members., Made from High-Quality American-Made HSLA Steel, Weight Savings, At over 50% lighter than the stock K-member, the entire QA1 K-member weighs only 25lbs.!, Increased Header Clearance, Header and oil pan clearance maximized for easier maintenance and installation., Modular Design for Versatility, Bolt-in engine mounts that can be easily swapped out for future engine changes., Improved Geometry, Ideal for street performance, autocross, pro touring or drag racing, these K-members maintain optimum anti-dive geometry and minimize bump steer issues on Mustangs with a lowered stance. And because they retain the factory wheel base, these K-members easily bolt on to factory components without any wheel or tire fitment changes. , For best results, QA1 control arms are strongly recommended.

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