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SKU: DS401 | UPC: 806990059710
QA1 Proma Star Series Coil-Over Shock Absorber - Single Adj. - Bearing Mount - 10.125in/14in - Alum
QA1 DS401 delivers Proma Star single adjustable coil-over performance for custom chassis and suspension builds where direct-fit shocks do not exist. This aluminum body shock offers 10.125 inch compressed height and 14 inch extended height with 3.875 inch travel plus bearing mounts top and bottom to reduce deflection and improve handling precision. Pair it with a 2.5 inch spring for instant ride height tuning and upgraded ride quality on street cars drag strips or road courses.
Key Features
- Single Adjustable Valving: 16-position rebound adjustment tunes ride firmness from one knob perfect for street-driven vehicles seeking balanced comfort and control.
- Bearing Mounts: Top and bottom bearing eyelets minimize bind and deflection ensuring smooth operation across full travel in custom mount applications.
- Ride Height Adjustability: Includes hardware kit for quick spring preload changes to set precise stance without disassembly.
- Aluminum Construction: Lightweight body dyno-tested in USA for consistent damping and durability in performance environments.
- Custom Stroke Options: 3.875 inch travel suits broad vehicle setups with options for other lengths available separately.
Product Notes
- Verify shock travel matches suspension geometry to prevent overextension or bottoming out.
- Spanner wrenches and thrust bearings sold separately simplify ride height adjustments.
- Using stock spring pockets requires checking for sufficient travel at desired height.
Installation Notes
- Professional installation recommended.
- Requires 2.5 inch inside diameter coil spring of appropriate rate and length.
- Bearing mounts accept 1/2 inch or 5/8 inch bolts poly bushings included for versatility.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | Custom | Chassis/Suspension | All |
Why Choose QA1?
- Leaders in performance shocks rod ends and suspension since 1993 with 83000 sq ft USA manufacturing.
- Dyno-tested products for circle track drag racing street performance and rodding markets.
- In-house carbon fiber tech and custom linkages set standards in motorsports engineering.
Frequently Asked Questions
-
Q: Does DS401 fit specific vehicles?
A: Designed for universal custom chassis and suspension applications ideal when OEM-fit shocks unavailable works on street rods drag cars and race builds. -
Q: What materials are used?
A: Aluminum shock body with steel shaft bearing mounts and included poly bushing sleeves for strength and reduced noise vibration harshness. -
Q: How does warranty work?
A: Limited Lifetime Warranty covers defects register online at QA1.net/warranty prior to installation for full protection.
Shipping & Handling
- Method: UPS or FedEx Ground
- Availability: In stock - ships same or next business day
- Packaging: Protective box 21.5 x 3.25 x 3.25 inches
- Weight: 7.8 lbs
QA1
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