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 Designed specifically for 1964–1966 Mustangs, this system replaces outdated factory suspension with a complete bolt-on package - engineered for balance, adjustability, and ride comfort.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.
third member sold separately EASY INSTALLATION Each component in this system is designed to bolt in or weld in with precision. The front suspension installs using existing mounting points, while the rear 4-link features self-fixturing weld-in brackets for consistent geometry. Once installed, you’ll have a full, modern suspension that fits like it was factory-engineered for today’s performance demands.
FITMENT NOTES: Fits 1964–1966 Ford Mustangs: Adjustable front ride height: stock to –2”: Adjustable rear ride height: stock to –3”: Compatible with QA1 9” housing and 4-link only: Requires welding for 4-link bracket installation: Includes 31-spline Ford 9” axles
Double adjustable QA1 Pro Coil shocks allow independent compression and rebound tuning
Fabricated QA1 9” housing with 31-spline 1541H alloy axles rated up to 650 HP
Tubular upper and lower control arms for better geometry and steering response
Front and rear sway bars reduce body roll and improves cornering response
QA1 HK02-FM01RS Level 2 Full Vehicle Handling Kit with QA1 9 in. housing
Big Ford “New Style Torino” flanges for brake compatibility
Heavy-duty 3” OD ¼” wall axle tubes handle up to 800 HP
Comprehensive instructions for straightforward installation
Rear triangulated 4-link eliminates axle wrap and wheel hop
Complete front and rear suspension solution in one kit
Application-specific fit for 1964–1966 Ford Mustangs
5x4.5” bolt pattern fits a wide range of wheels
Adjustable front ride height: stock to –2”
QA1 64-66 Ford Mustang Handling Kit - Level 2
Adjustable rear ride height: stock to –3”
Durable black powder coat finish
1964-1966 Ford Mustang
QA1 Handlink Kit 2
Handlink Kit 2
Suspension Kit
