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
QA1 DD401 Proma Star Coil-Over Shock, 10.125/14 Comp/Exp QA1
QA1 DD401 Proma Star Coil-Over Shock, 10.125/14 Comp/Exp
Sku # 721DD401
Mfr. Part # DD401
Condition
New
Brand
QA1
Sold
Each
Details
Info

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
Specs
Finish
Anodized
Shock Type
Twin Tube
Shock Body Material
Aluminum
Adjustable
Yes
Extended Length
14
Compressed Length
10.13
Mounted Length
12
Body Diameter
2.00
Number of Valving Selections
324
Compressed Length Range
10.00" to 10.99"
Extended Length Range
14.00" to 14.99"
Shock Stroke
4.00
Shock Adjustability
Double Adjustable
Upper Shock Mount
1/2" Spherical Rod End
Lower Shock Mount
1/2" Spherical Rod End
Mounted Length Range
11 1/2" - 12 1/2"
MFG. Part #
DD401
Spring Length
9 - 10 Inch
GTIN Code
806990059727
Reviews

Great value in a double adjustable coilover.

Rated
Product Rating
by Bill on January 02, 2020

Summary: 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.

Cons: Can't be used to limit suspension travel.

Pros: Quality; Wide range of adjustability.

Yes, I recommend this product.

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Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 72 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.