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#721DD401
QA1 DD401 Proma Star Coil-Over Shock, 10.125/14 Comp/Exp
- Features independent compression and rebound adjustment
- They are revalveable and rebuildable by the QA1 factory or QA1 authorized service centers
- Has a centerless ground, hard chrome plated, solid piston rod
$334.95
/each
In Stock
$371.08
Save $36.13
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Product Summary
Universal Fit, Rear Position, 12" Mounted Length
- Features independent compression and rebound adjustment
- They are revalveable and rebuildable by the QA1 factory or QA1 authorized service centers
- Has a centerless ground, hard chrome plated, solid piston rod
- Manufactured from precision machined aluminum
- Each adjustment has been carefully defined to provide the ideal force curve to maximize performance
Key Specs
| Position | Rear |
| Mounted Length | 12" |
| Shock Adjustability | Double Adjustable |
| Shock Type | Twin Tube |
| Shock Body Material | Aluminum |
Need To Know
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QA1 DD401 Details
QA1's double adjustable shocks have 324 valving options, you can easily adjust your compression and rebound valving and get the hard-core performance you need. The dual knobs allow you to choose from 18 valving options that adjust both compression and rebound valving individually, allowing total suspension control in one easy-to-reach location.
- Independent Compression and Rebound Adjustment
- Coil-Over
- Lightweight Aluminum
- Ride Height Adjustable
- Spring Mounting Hardware Included
- 100% Dyno Tested and Serialized
- Revalveable and Rebuildable by the QA1 Factory or QA1 Authorized Service Centers
- American Made
- Precision Machined Aluminum
- Piston with PTFE
- Centerless Ground, Hard Chrome Plated, Solid Piston Rod
- Three Step Sealing System
Guides & Documents
Warranty Information
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Warranty Information
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QA1 DD401 Specifications
QA1 DD401 Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | DD401 |
| Brand | QA1 |
| Position | Rear |
| Mounted Length | 12" |
| Shock Adjustability | Double Adjustable |
| Shock Type | Twin Tube |
| Shock Body Material | Aluminum |
| Shock Stroke | 4.00 |
| Upper Shock Mount | 1/2" Spherical Rod End |
| Lower Shock Mount | 1/2" Spherical Rod End |
| Height Adjustable | Yes |
| Finish | Anodized |
| GENERAL | |
| Compressed Length Range | 10.00" to 10.99" |
| Compressed Length | 10.13" |
| Extended Length Range | 14.00" to 14.99" |
| Extended Length | 14" |
| Spring Length | 9 - 10 Inch |
| Number of Valving Selections | 324 |
| Mounted Length Range | 11 1/2" - 12 1/2" |
| Body Diameter | 2.00" |
| Adjustable | Yes |
| GTIN Code | 806990059727 |
Ratings & Reviews
5
2 Reviews
Customers highly regard the product for its superior quality, justifying its cost compared to cheaper competitors. Users noted its excellent performance in HPDE track cars, with effective functionality using recommended track/race settings. One drawback is the inability to use a bump stop on the shaft or shock to limit droop, necessitating separate bump stops to limit travel. Nevertheless, customers found the product worth repurchasing for its great value and noted high performance.
Ratings & Reviews
5
2 Reviews
Customers highly regard the product for its superior quality, justifying its cost compared to cheaper competitors. Users noted its excellent performance in HPDE track cars, with effective functionality using recommended track/race settings. One drawback is the inability to use a bump stop on the shaft or shock to limit droop, necessitating separate bump stops to limit travel. Nevertheless, customers found the product worth repurchasing for its great value and noted high performance.
5
2 reviews
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I would buy these again.
5.0
7 months ago
Chris
Cleveland Tennessee
Verified
I've used pro shock clovers in the past. The QA1 shocks are far superior and cost more. You get what you pay for.
Would Recommend
Great value in a double adjustable coilover.
5.0
6 years ago
Bill
Milpitas, CA
Verified
I installed these on a dedicated HPDE track car using the recommended track/race settings on the damping adjusters. So far they are working very well. But note that they don't allow the use of a bump stop on the shaft nor do they allow the shock to be used to limit droop, otherwise it will void the warranty - I had to set up separate bump stops on the suspension to limit travel.
Would Recommend
Showing 2 of 2 reviews
Questions & Answers
Questions & Answers
1 Question • 1 Answer
What bearings are included with the shock?
by JR
• 8 years ago
1 answer
View Answer
1 of 1 questions shown