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 Designed specifically for 1964–1966 Mustangs, this system replaces outdated factory suspension with a complete bolt-on package - engineered for balance, adjustability, and ride comfort.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.
Application-specific fit for 1964–1966 Ford Mustangs
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
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
Attributes:
Brand Name: QA1
GTIN: 00806990234759
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
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
Strut Mount Insulator(s) Included: No
Suspension Type: Spring
UPC: 806990234759
Extended Information:
Country of Origin: US
Emissions : Emissions Compliance Exempt
Life Cycle Status: Available To Order
Packing Information:
Quantity of Each: 1
Package UOM: EA
Dimension: 9.5 x 63 x 9.125 inches
Weight: 75 POUNDS
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