QA1 Four Link Kit With 9In. Housing Single Adjustable (1967-1970 Mustang) - R124-150S
Transform your 1967–1970 Mustang’s rear suspension with QA1’s complete bolt-in 4-link system featuring a custom QA1 9-inch rear housing. This all-inclusive kit delivers modern handling improved traction and the durability to handle serious horsepower - all while retaining a clean factory-style fit. Perfect for restomod builds and performance street cars this setup eliminates the compromises of leaf-spring suspension for good.MODERN HANDLING FOR YOUR CLASSIC MUSTANG QA1’s triangulated 4-link system replaces leaf springs with a geometry-optimized setup that improves traction stability and ride quality. By eliminating axle wrap and keeping pinion angle consistent under load your Mustang will launch harder corner flatter and drive smoother - whether you’re cruising or carving corners. SINGLE ADJUSTABLE COILOVERS This system includes QA1’s single adjustable shocks offering 18 clicks of rebound and compression adjustment together. A single knob makes it easy to fine-tune comfort and performance giving you complete control over how your Mustang rides and handles. BUILT TO HANDLE BIG POWER QA1’s fabricated 9-inch housing is designed to take abuse. Fully formed trailing arm brackets minimize flex while 3” OD ¼” wall axle tubes and 31-spline alloy axles provide the strength to handle up to 650 HP (housing rated to 800 HP). The result is a rigid predictable suspension that’s ready for modern horsepower levels. RIDE HEIGHT ADJUSTABILITY Easily adjust ride height from factory level to 3” lower. Fine-tune your stance and handling without compromising geometry tire clearance or comfort - all with simple tool-free adjusters. EASY INSTALLATION The QA1 4-link kit is designed for self-fixturing weld-in installation ensuring accurate alignment with minimal fabrication. The included QA1 9” housing bolts in cleanly providing a precise fit with QA1’s brackets and coilovers.
Application-specific fit for 1967–1970 Ford Mustangs
Includes drain plug fill plug vent port and jack pad for easy serviceability
Weld-in installation with self-fixturing brackets for perfect geometry
Complete system includes 9” rear housing triangulated 4-link and coilover shocks
Single adjustable shocks with 18 clicks of rebound/compression control
Adjustable ride height: factory to –3”
Eliminates axle wrap and wheel hop for improved traction and control
Heavy-duty fabricated 9” housing with 3” OD ¼” wall axle tubes
31-spline 1541H alloy axles rated to 650 HP (housing rated to 800 HP)
Big Ford “New Style Torino” flanges (2.5” offset) for easy brake compatibility
5x4.5” bolt pattern fits most aftermarket Mustang wheels
QA1 specializes in providing performance shocks
suspension components
carbon fiber driveshafts
rod ends
ball joints and more to a variety of automotive markets
including circle track racing
drag racing
street performance
and street rodding. With over 83
000 square feet of manufacturing space in Lakeville
MN
QA1 is proud to offer an extensive line of American-made suspension and driveline. Founded in 1993 by Jim Jordan
QA1 introduced rod ends and spherical bearings specifically for the performance racing industry
quickly becoming the #1 name in rod ends
spherical bearings
custom linkages and similar products to the motorsports industry. Always on the cutting edge of technology
QA1 recently introduced in-house filament winding of carbon fiber and similar materials to provide driveshafts and other products. With continued focus on fine-tuning and expanding its offering of American-made high performance suspension components and carbon fiber driveshafts
QA1 has grown to be a household name in the performance aftermarket.
