QA1 MS303 Front Pro Coil Single Adjustable Shock for 1974-1978 Ford Mustang II

Vehicle Fitment

• 1974-1978 Ford Mustang II (Front, RWD; 2+2, Base, Ghia, Mach 1)

Fitment Notes

• Front Pro Coil coil-over shock specifically designed for 1974-1978 Ford Mustang II applications.
• Applicable to Mustang II 2+2, Base, Ghia, and Mach 1 configurations within the covered years.
• All listed applications use rear-wheel drive (RWD).
• This part is the shock-only version; coil-over springs are not included.
• Uses the factory-style front mounting configuration with a single-stud upper mount and 7/16-inch lower bushing mounting.
• Designed for bolt-in installation without cutting or welding when installed on the intended application.
• Ride height is adjustable through the threaded coil-over shock body when used with a compatible spring.
• QA1 recommends its T114W or T115W spanner wrench for ride-height adjustment; wrench is not included.
• Spring rate must be selected separately according to the vehicle's front-end weight and intended use.
• 1979 and newer Ford Mustang applications are excluded.
• Sold individually; 2x shocks are required for a complete front-axle installation.

Features

• Pro Coil single-adjustable front coil-over shock engineered for Ford Mustang II.
• 18-position simultaneous compression and rebound adjustment provides tunable damping.
• Fully threaded shock body allows adjustable ride height with a compatible coil-over spring.
• Lightweight billet aluminum shock body reduces suspension weight.
• Twin-tube damper construction provides consistent damping performance.
• Single-stud upper mount provides Mustang II-specific mounting geometry.
• 7/16-inch lower bushing mount is designed for the specified Mustang II suspension configuration.
• Ride-height adjustable design supports performance stance and suspension tuning.
• Serviceable and rebuildable by QA1 or authorized QA1 service centers.
• 100% dyno tested and serialized before leaving the QA1 factory.
• Designed for straightforward bolt-in installation on the intended Mustang II application.
• Suitable for street and strip performance applications.
• Made in the USA.
• QA1 Limited Lifetime Warranty eligible when applicable registration requirements are met.

Specifications

• Brand: QA1
• Part Number: MS303
• Product Line: Pro Coil
• Product Type: Front Coilover Shock
• Shock Valving: Single Adjustable
• Position: Front
• Application: Ford Mustang II
• Year Range: 1974-1978
• Collapsed Length: 7.88 in.
• Extended Length: 11 in.
• Stroke: 3.12 in.
• Shock Body Material: Aluminum
• Shock Body Diameter: 2 in.
• Shock Body Type: Threaded
• Shock Body Finish: Anodized
• Upper Mount: Single stud
• Lower Mount: 7/16-in. bushing/T-bar configuration
• Adjustment Positions: 18
• Coilover Compatible: Yes
• Coilover Spring Included: No
• Gas Charged: No
• Quantity: 1x shock
• Drivetrain: RWD

Included Components

• 1x QA1 MS303 Pro Coil single-adjustable front shock
• 1x Lower mounting sleeve/hardware set

Product Description

QA1 MS303 is a Pro Coil single-adjustable front coil-over shock designed specifically for 1974-1978 Ford Mustang II vehicles. Its lightweight aluminum body, threaded design, and 18-position damping adjustment provide a combination of ride-height control and suspension tuning for street, strip, and performance-oriented Mustang II builds.

The MS303 uses simultaneous compression and rebound adjustment, allowing the damper to be tuned for different spring rates, vehicle weights, tires, and driving conditions. Its 7.88-inch collapsed length and 11-inch extended length provide approximately 3.12 inches of shock travel. The single-stud upper mount and 7/16-inch lower bushing mounting configuration are designed around the Mustang II front suspension.

This is the shock-only version and does not include a coil-over spring. A compatible spring must be selected separately based on the vehicle's front-end weight and intended application. The threaded body permits ride-height adjustment when properly installed with the appropriate spring and hardware. MS303 is sold individually, so 2x shocks are required for a complete front suspension installation.