What is the spring rate for this coil-over system?

This particular QA1 MD302 series coil-over kit comes with 600 lbs/in springs. This is a good starting point for many street and strip applications, but you may want to choose a different rate depending on your specific needs. QA1 offers other spring rates as options.

Are these shocks rebuildable?

Yes, these QA1 shocks are rebuildable and revalvable. This can be done by QA1 directly or by a QA1 authorized service center, which helps extend the service life of the shocks. Regular rebuilds can maintain optimal performance.

What adjustments can I make with the double-adjustable feature?

The double-adjustable feature allows you to independently adjust the compression and rebound damping of the shock. Compression damping controls the shock's resistance to compression, while rebound damping controls the speed at which the shock returns to its original length after being compressed. This allows for very fine tuning of the suspension.

QA1

QA1 Ford Mustang II Pro Front Coil-Over System (1/2in Bushing) - Double Adj. - 8in x 600lbs/in

Name: QA1 Ford Mustang II Pro Front Coil-Over System (1/2in Bushing) - Double Adj. - 8in x 600lbs/in
Brand: QA1
Price: 1030.52 USD
Availability: InStock

$1030.52

Bolt-in coil-over kit for Mustang II front ends. Double-adjustable damping lets you dial in the ride.

Key Features

Double adjustable — independently control compression and rebound
Ride height adjustable — get the perfect stance
Bolt-in installation — no cutting or welding needed
Lightweight aluminum construction — reduces unsprung weight
100% dyno tested and serialized — ensures quality and performance
Rebuildable and revalveable — extends service life

Fits Mustang II front suspensions. Check manufacturer fitment data to confirm compatibility with your vehicle.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

Front Pro Coil double adjustable Mustang II mount shock. Includes 8" springs with rating of 600.

For unmatched ride quality for the street and strip, turn to QA1's Mustang II Pro Coil Shock Systems. With double adjustable, single adjustable, drag "R" series adjustable and non-adjustable valving options, along with four spring rate options, you will find the right coil-over conversion system for you. These shocks are designed to give you the lower ride height and "in the weeds" stance you're looking for, and they utilize a fully threaded body that allows you to adjust your ride height for the perfect stance or to finely tune the weight balance for superior handling. Used in drag racing, street performance, autocross, road racing and street rod applications. Each pro coil system includes (2) QA1 high performance shocks, (2) chrome plated, specially designed springs and all mounting hardware. Adjustable Mustang II Pro Coil Systems, Made in the U.S.A., Easy, Bolt-In Installation, Coil-Over, Ride Height Adjustable, Lightweight Aluminum, 100% Dyno Tested and Serialized, Rebuildable and Revalveable by the QA1 Factor or QA1 Authorized Service Centers, Sold in Pairs, , Steel Non-Adjustable Mustang II Pro Coil Systems, Easy, Bolt-In Installation, Coil-Over, Ride Height Adjustable, Polished and Chrome Plated Steel Shocks and Springs, 100% Dyno Tested and Serialized, Sold in Pairs.