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QA1

Level 2 Full Vehicle Handling Kit with 9 in. housing

Part Number HK02-FM01RS (107370271)
$8,594.95 $10,140.87 SAVE 15%

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Description

Transform your classic Mustang into a modern-handling street machine with QA1’s Level 2 Full Vehicle Handling Kit. Designed specifically for 1964–1966 Mustangs, this system replaces outdated factory suspension with a complete bolt-on package - engineered for balance, adjustability, and ride comfort. From the front control arms to the rear 4-link and 9” housing, every component works together to deliver sharper steering, better traction, and a perfectly tuned stance. MODERN PERFORMANCE, CLASSIC STYLE Factory leaf springs and stamped steel components limit performance and ride quality. QA1’s complete suspension system updates your Mustang with modern geometry, adjustable coilovers, and tubular construction that drastically improves handling without compromising ride comfort. The included 9” housing integrates seamlessly with QA1’s triangulated 4-link to create a unified, high-strength foundation ready for serious power. HANDLING YOU CAN DIAL IN This Level 2 system includes double adjustable coilovers that allow independent control over compression and rebound, so you can fine-tune ride quality and performance for your exact driving style - whether that’s highway cruising or weekend corner carving. FRONT-TO-REAR BALANCE The included tubular upper and lower control arms, front sway bar, and fully adjustable rear 4-link work together to control body roll and maintain optimal suspension geometry. The result is a Mustang that corners flatter and accelerates smoother. BUILT FOR POWER AND RELIABILITY The included QA1 9” fabricated housing delivers exceptional strength and serviceability. Featuring heavy-duty 3” OD ¼” wall axle tubes, 31-spline alloy axles, and formed trailing arm brackets, it’s rated up to 800 HP - giving you peace of mind whether your build is mild or wild.

Fitment

This part fits the following vehicles.

  • 1964-1966 Ford Mustang

Features & benefits

  • Application-specific fit for 1964–1966 Ford Mustangs
  • Complete front and rear suspension solution in one kit
  • Double adjustable QA1 Pro Coil shocks allow independent compression and rebound tuning
  • Tubular upper and lower control arms for better geometry and steering response
  • Front and rear sway bars reduce body roll and improves cornering response
  • Rear triangulated 4-link eliminates axle wrap and wheel hop
  • Fabricated QA1 9” housing with 31-spline 1541H alloy axles rated up to 650 HP
  • Heavy-duty 3” OD ¼” wall axle tubes handle up to 800 HP
  • Big Ford “New Style Torino” flanges for brake compatibility
  • Adjustable front ride height: stock to –2”
  • Adjustable rear ride height: stock to –3”
  • 5x4.5” bolt pattern fits a wide range of wheels
  • Durable black powder coat finish
  • Comprehensive instructions for straightforward installation
  • Convenient solution - this front end kit includes left and right side suspension components to ensure a complete repair
  • Premium components - this kit uses extended-life components with low-friction polymer bearings and premium synthetic grease to ensure a long service life
  • Application-specific - this kit has been engineered to deliver factory-like feel and performance on specific vehicles and equipment
  • Quality tested - this part has undergone try-on, corrosion and material testing to ensure a quality fit and lasting durability

Specifications

Air Adjustable No
Bushing Color Black
Bushing Material Polyurethane
Coil Spring Color Silver
Coil Spring Insulator(s) Included No
Coil Spring Material Chrome Silicon Alloy
Country Of Origin US
Front Shocks Compressed Length 11.13
Front Shocks Relaxed Length 15
Grade Type Performance
Manufacturer Part Number HK02-FM01RS
Rear Shocks Compressed Length 11.13
Rear Shocks Relaxed Length 16.38
Street Legal No
Strut Mount Insulator(s) Included No
Suspension Type Spring
UPC 806990234759

Warranty

1 Year

Magnuson-Moss Warranty Act

Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)).

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