QA1 Adjustable 12 Inch Coil-Over Shock Kit

#721485

QA1 Adjustable 12 Inch Coil-Over Shock Kit

Name: QA1 Adjustable 12 Inch Coil-Over Shock Kit
Brand: QA1
SKU: 721485
Price: 679.8 USD
Availability: InStock
Rating: 4.9 (60 reviews)

60 Reviews

31 Questions

Shock body is constructed from billet aluminum and purpose-built for the street
Features 5/8" centerless ground, hard chrome plated, solid piston rod
Spring I.D. measures 2-1/2"

Mount Length:

12 Inch

14 Inch 11 Inch 15.3 Inch

$679.80

/kit

In Stock

Quantity

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Product Summary

Universal Fit, Front and Rear Position, Anodized

Shock body is constructed from billet aluminum and purpose-built for the street
Features 5/8" centerless ground, hard chrome plated, solid piston rod
Spring I.D. measures 2-1/2"
Integrated 18-position adjuster knob changes the rebound valving for complete control of your ride
Revalveable and rebuildable by QA1 authorized service centers

Comes as a Kit

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Key Specs

Position	Front and Rear
Mounted Length	12"
Shock Adjustability	Single Adjustable
Shock Type	Twin Tube
Shock Body Material	Aluminum

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Details

Modern Custom Shocks, Built For the Street

Without adjustable coil-over shocks, your car is stuck in old-school suspension mode. By installing this coilover shock kit, you’ll feel an improvement in both control and chassis feedback, right out of the box!

Get modern, best-in-class performance for your classic ride with the QA1 12 Inch Coil-Over Shock Kit. Made from premium billet aluminum bodies, they feature 18 easily adjustable rebound settings for hot rods and are not a revalved race shock - they were built specifically for a tunable, customized ride for your street rod.

Rebuildable and revavleable by authorized QA1 service centers, these are built for a lifetime of smooth riding.

Has 5/8" I.D. mounting eyes and includes 1/2" bushing. Sold as a pair.

Note: Shock lengths represent mounted length at ride height.

Shock

Billet aluminum shock body
5/8 " centerless ground, hard chrome plated, solid piston rod
Deflective Disc Valving
3-step sealing system
18-position adjuster knob changes the rebound valving
Allows suspension control in one easy-to-reach location
100% dyno tested and serialized
Revalveable and rebuildable by QA1 authorized service centers

Spring

2-1/2 " I.D. chrome-silicon spring
Guaranteed to stay within 2% of rate and length FOR LIFE

Shock

Billet aluminum shock body
5/8 " centerless ground, hard chrome plated, solid piston rod
Deflective Disc Valving
3-step sealing system
18-position adjuster knob changes the rebound valving
Allows suspension control in one easy-to-reach location
100% dyno tested and serialized
Revalveable and rebuildable by QA1 authorized service centers

Spring

2-1/2 " I.D. chrome-silicon spring
Guaranteed to stay within 2% of rate and length FOR LIFE

Charts

Coil-Over Chart (JPG)

Coil-Over Mounting Guide (GIF)

Guides & Documents

Coilovers Technical Information (721485)

Coilovers Technical Information (7214855)

Coilovers Installation Instructions (7214855)

Coil Springs Technical Information (25510)

Warranty (QA1)

Technical Information (QA1)

Specifications

KEY SPECS
Brand	QA1
Position	Front and Rear
Mounted Length	12"
Shock Adjustability	Single Adjustable
Shock Type	Twin Tube
Shock Body Material	Aluminum
Shock Stroke	3.85
Upper Shock Mount	1/2" Bushed Eyelet
Lower Shock Mount	1/2" Bushed Eyelet
Height Adjustable	Yes
Finish	Anodized

GENERAL
Shock Body Size	Small Body
Shock Body Type	Threaded
Compressed Length Range	10.00" to 10.99"
Compressed Length	10.13"
Extended Length Range	14.00" to 14.99"
Extended Length	14"
Spring Diameter	2.5"
Spring Length	10 Inch
Number of Valving Selections	18
Mounted Length Range	11 3/4" - 12 1/4"
Coilover Kit Included	Yes
Coilover Springs Included	Yes
Shaft Diameter	0.63"
Bushing Length	1.25"
Bushing Material	Polyurethane
Body Diameter	2"
Sold in Quantity	Kit
Adjustable	Yes
Spring Finish	chrome
Notes	May need a spring compressor to fully assemble this kit.

Ratings & Reviews

4.9

60 Reviews

Overall Assessment

Customers widely recommend our product, consistently praising its quality, durability, and ease of installation. The product is particularly recommended for enhancing builds and restorations of various vintage autos such as 1930s Fords and Chevys. Its usage improved car rides and control, enabling smoother and more comfortable journeys. Features including the smaller diameter of the spring for easier top bolt access, adjustable settings for desired ride quality, and strong, sturdy construction were specifically praised. Users found that our coil-over shocks outperformed other brands on the market in terms of dependability and ride improvement.

Write A Review

4.9

60 reviews

Most Liked Positive Review

5.0

QA1 coil over shocks

I recently installed a pair of QA1 coil over springs on the rear of my street rod to replace the RideTech air springs, that were installed at the time of the original build.The installation went smooth and access to the top mounting bolts was much easier due to the smaller diameter of the spring compared to the air springs I removed. I added the lower thrust bearings, which made the height adjustment a breeze. The anti- seize compound was a bit messy , but is well worth the hassle. The scanner wrenches I purchased made the adjustment less complicated.

Most Liked Negative Review

3.0

Theses are the best coil overs that I have ever seen!

Theses shocks are actually one piece and are adjustable. The others are something that fits over a shock. I have installed them on the front end of my 1934 Ford and I'm going to put them on the rear very soon.

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Sort Reviews

Great hot rod shocks!

5.0

6 months ago

NFPCPA

Washington State.

Verified

I put the coil-over shocks on my Model A and they are just fine. I like the fact that they are adjustable and guaranteed by QA1.

Would Recommend

Yes

5.0

6 months ago

Gray Beard

Verified

Springs may be a little stiff

Would Recommend

Definitely recommend to others

5.0

2 years ago

CH34

Nixa, MO

Verified

He puts them in the car and they work.

Would Recommend

Awesome product!

5.0

2 years ago

Mudge

Texas

Verified

These universal Coil Overs worked perfect on my 36 Plymouth coupe! I now have all 4 in position and ride quality is awesome !

Would Recommend

Yes

5.0

2 years ago

Steve.

San Diego.

Verified

For the rear. Of my 1931 model a coupe.

Would Recommend

Yes I would buy again.

5.0

2 years ago

Kenny

St. Rose, La.

Verified

Fit perfect

Would Recommend

Great shocks.

5.0

2 years ago

Russ

San Dimas, CA

Verified

These are going on a 1950 Chevrolet pickup restomod with a 4-link rear suspension.

Would Recommend

Worked perfect for our application

5.0

2 years ago

Sue

Dennison Ohio

Verified

We used on a John Deere gator

Would Recommend

I would buy this again.

5.0

3 years ago

Rich

Bay Shore

Verified

Perfect for my 31 Ford.

Would Recommend

Yes

5.0

3 years ago

Captain Lucky

Oregon

Verified

Rearend

Would Recommend

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Questions & Answers

31 Questions • 11 Answers

Sort Questions

Are these gas shocks?? can they be mounted upside down??

by clyde28075

• 6 years ago

1 answer

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Can the eyelet be rotated to match mounting position?

by CW

• 7 years ago

1 answer

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I Have a 1940 Ford Sedan 350/350 8 inch ford rear end parallel leafs and was wondering what would be a suggested spring rate for the rear with a 12 or 14 inch mounted length. I would like to be able to adjust the ride height up and stiffen the suspension travel slightly when I have the car loaded with passengers.

by CW

• 7 years ago

1 answer

View Answer

I have a 1953 ford truck that I have updated the rear to a TCI 4 link and want these adjustable coilovers. The ones that came with the kit are too stiff and I can put two 200lb guys in the back and it will not mover more that 1/2 inch- I want the the back to be low and the front is just barely off the ground with 2 inch dropped spindles on front --- what do you recommend for coilover length and weight...is 12" to long

by John

• 7 years ago

1 answer

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I have a 1967 f100 short bed with a coyote and a six speed trans it has four link rear and I was wondering what spring rates would work best with the 12 inch coilovers

by cole

• 7 years ago

1 answer

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can this shock be mounted horisontally ? in a kit car..

by krs

• 8 years ago

1 answer

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I have A 1990 Chevy truck and want to add a set of these outback. Length won't matter as I am doing a 3 link and relocating these behind the axle. What I want to know is what lb springs should I get?

by Thesetup

• 8 years ago

2 answers

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I bought these qa1 coilovers with 10" springs, supposed to be mounted 12" mount to mount, no room for adjustment on coil over screws and shock is mounted at 13 1/5". can I use a 8" spring so I can adjust the coilover screws?

by jd

• 9 years ago

1 answer

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Can I select QA1 DS401, is there a similar kit with bearing on Lower Mount and Upper Mounts? Thanks.

by EZ Nova

• 9 years ago

1 answer

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Hi I have a 69 Camaro with rear triangulated suspension and 10 bolt, I am looking to install these coilovers, what spring suggestion is recommended? Thank you

by AQ

• 9 years ago

1 answer

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