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Street Race Truck More... The Toolbox
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$284.95
$249.99
QA1 DD403 Proma Star Coil-Over Shock, 15.000/11.125 Ext/Comp
QA1 DD403 Proma Star Coil-Over Shock, 15.000/11.125 Ext/Comp

QA1 DD403 Proma Star Coil-Over Shock, 15.000/11.125 Ext/Comp

Universal Fit, 12.75" Mounted Length, Twin Tube Shock Type, Aluminum Shock Body Material

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QA1 DD403 Proma Star Coil-Over Shock, 15.000/11.125 Ext/Comp
QA1 DD403 Proma Star Coil-Over Shock, 15.000/11.125 Ext/Comp
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Part # 721DD403
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  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.

Details

Mounted Length:
12.75"
Shock Type:
Twin Tube
Shock Adjustability:
Double Adjustable
Shock Body Material:
Aluminum
Shock Stroke:
4.00
Upper Shock Mount:
Bearing
Lower Shock Mount:
Bearing
Compressed Length:
11.13"
Extended Length:
15"
Compressed Length Range:
11.00" to 11.99"
Extended Length Range:
15.00" to 15.99"
Spring Length:
10 Inch
Number of Valving Selections:
324
Finish:
Clear Anodized
Mounted Length Range:
12 1/2" - 13 1/4"
MFG. Part #:
DD403
Body Diameter:
2"
Adjustable:
Yes

Info

QA1's double adjustable shocks have 324 valving options, with 18 positions of compression adjustment and 18 positions of rebound adjustment. There are no jumps when adjusting between any two clicks. Each adjustment has been carefully defined to provide the ideal force curve to maximize performance.

  • 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
Some parts are not legal for use in California or other states with similar laws/regulations

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Videos & Articles
  • Check out this coil-over mounting guide to learn about determining your spring rate, compensating for mounted angle, and measuring a replacement shock accurately.
  • We add some tuneability to the suspension on Project Chevelle by bolting on QA1 coilovers front and rear.
  • Product guru Jeff K. takes us along as he updates the suspension on his 1946 Ford Sedan Delivery with a set of fresh Mustang II coilovers following an unfortunate incident with a pothole.

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