QA1 122-HK02-FM01RS Features:

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