QA1 MS303 Front Pro Coil Single Adjustable Shock for 1974–1978 Ford Mustang II For Sale

Upgrade your 1974–1978 Ford Mustang II with the QA1 MS303 Pro Coil Adjustable Shock. This lightweight aluminum shock features 18-position damping for optimal performance. Designed for easy bolt-in installation, it ensures precise tuning of your suspension.
Shock sold individually; two required for full front axle

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Part Brand: QA1

Part Number: MS303

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

• 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.

• 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.

• 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

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

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.

*Parts are for USA spec vehicles, please contact us to verify fitment on JDM & international models.

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• Free shipping across the contiguous 48 United States (excludes Hawaii and Alaska). Item(s) ships on the same day or within 1 business day. Delivery time is within 2 to 4 business days excluding next day deliveries. Orders over $750 require signature for delivery.
• Canada customers - If does not collect import & duty fees during checkout, the shipping carrier will collect them prior to delivery.

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• Your complete shopping satisfaction is our #1 priority. If an item you ordered from us does not meet your expectations, please contact us within 30 days of receiving the item(s). If your order arrives damaged from shipping please contact us and we will provide a prepaid return label to send back for a replacement or refund.

• Returned items must be in the original packaging (including plastic wrapped items) and in brand new condition.
• Any returns received installed, mounted, used or missing components will be subject to return fee\'s.

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