-9%
Photo - Primary
Photo - Primary
Photo - Primary
Photo - Primary
Photo - Primary
Logo Image
Click to zoom in

QA1 Proma Star Series Coil-Over Shock Absorber - Single Adj. - Bushing Mount - 11.125in/15in - Alum

QA1
QAPDS404
806990059772
Shocks and Struts
20+ Units In Stock - Ships Next Business Day
$ 260.29 $ 234.95
$ 234.95

SKU: DS404 | UPC: 806990059772

QA1 Proma Star Series Coil-Over Shock Absorber - Single Adj. - Bushing Mount - 11.125in/15in - Aluminum Body - Universal

QA1 DS404 Proma Star Series coil-over shock absorber brings coil-over benefits to custom chassis and suspension builds where direct-fit shocks are unavailable. This single adjustable aluminum shock with bushing mounts offers 3.875in stroke from 11.125in compressed to 15in extended length for precise ride tuning. Pair with a 2.5in ID spring to achieve custom ride height and enhanced handling on street cars or track vehicles.

Key Features

  • Single Adjustable Valving: Turn one knob to adjust compression for balanced street ride comfort or firmer performance handling
  • Ride Height Adjustment: Included hardware kit allows quick changes to set perfect stance without disassembly
  • Poly Bushing Mounts: Includes 1/2in and 5/8in sleeves to fit common applications while reducing noise, vibration and harshness
  • Aluminum Body Construction: Lightweight 2in diameter body ensures durability and heat dissipation during extended use
  • Dyno Tested and USA Made: Each shock undergoes performance validation for consistent rebound and compression response

Product Notes

  • Verify shock travel matches suspension geometry to prevent overextension or bottoming out
  • Spanner wrenches and thrust bearings available separately simplify preload and height adjustments
  • Stock spring pockets require checking for sufficient clearance to maintain travel at desired height

Installation Notes

  • Professional installation recommended.
  • Requires separate 2.5in ID coil spring matched to vehicle weight and rate
  • Poly bushings compatible with 1/2in or 5/8in mounting bolts. bearing mounts available separately for misalignment

This Part Fits

Year Make Model Submodel
All Years Universal Custom Chassis/Suspension All

Why Choose QA1?

  • Offers Limited Lifetime Warranty when registered at QA1.net/warranty before installation
  • Engineered for street, drag strip and road course with proven valving options
  • Every shock dyno tested to deliver reliable damping across full stroke

Frequently Asked Questions

  • Q: What type of spring is required for the DS404?
    A: Uses 2.5in inside diameter coil spring. select length and rate based on vehicle weight and desired ride height
  • Q: What mounting options come with this shock?
    A: Polyurethane bushing eyelets at both ends with 1/2in and 5/8in sleeves. extended eyelets included for versatility
  • Q: How do I get the warranty on this QA1 shock?
    A: Register online at QA1.net/warranty prior to installation for industry-leading coverage

Shipping & Handling

  • Method: UPS Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Protective tube, 16in L x 4in W x 4in H
  • Weight: 5.65 lbs

Request For Information

Have questions about QA1 Proma Star Series Coil-Over Shock Absorber - Single Adj. - Bushing Mount - 11.125in/15in - Alum? Fill out the form below and we'll get back to you by the next business day.
QA1

QA1

QA1 suspension parts are stocked at Black Ops Auto Works for American muscle cars and classic trucks. Shop coilover kits, shock absorbers, springs, handling kits, four link systems, sway bars, strut kits, rod ends, and suspension hardware for the Mustang, Camaro, Corvette, Challenger, Charger, and GM B-Body, F-Body, and G-Body platforms. Every product is filterable by year, make, model, trim, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 536 QA1 SKUs across coilovers, shocks, springs, and handling kit categories. What This Brand Covers QA1 is a suspension manufacturer known for adjustable coilover systems, shock absorbers, and complete handling kits built for muscle cars, classic trucks, drag cars, and pro touring builds. The lineup covers everything from single component shock replacement to full vehicle handling packages. Brand Focus QA1 concentrates on American muscle car and classic truck platforms, with deep coverage of GM, Ford, and ...

View QA1 Products
Shocks and Struts

Shocks and Struts

Shocks and struts for cars, trucks, SUVs, and Jeeps are stocked at Black Ops Auto Works. Shop front and rear shocks, loaded strut assemblies, monotube shocks, twin-tube shocks, reservoir shocks, and steering dampers for daily drivers, lifted trucks, tow rigs, off-road builds, and muscle cars on Hellcat, Trackhawk, TRX, HEMI, LS, LT, Coyote, and EcoBoost platforms. Every shock and strut is filterable by year, make, model, trim, drivetrain, front or rear position, and ride height so the correct part ships the first time. Black Ops Auto Works carries 5,188 shock and strut SKUs across construction type, application, and vehicle use. What This Category Covers Shocks and struts damp spring oscillation so the tire stays planted on the road and are the most common suspension replacement job on any vehicle. A shock absorber is a standalone damping unit that bolts between the chassis and axle or lower control arm. A strut is a structural suspension member that combines damping with the sp...

View Shocks and Struts Products
Suspension

Suspension

Suspension parts and complete kits for cars, trucks, SUVs, Jeeps, and off-road builds are stocked at Black Ops Auto Works. Shop coilovers, lowering springs, lift kits, leveling kits, shocks and struts, sway bars, control arms, tie rods, ball joints, bushings, chassis bracing, alignment hardware, air suspension, and complete stage kits from Bilstein, KW, Ohlins, Fox, KING, ICON, BC Racing, Silvers, Eibach, H&R, Swift Springs, Whiteline, Energy Suspension, Moog, SPC Performance, Rough Country, ReadyLIFT, BDS, Skyjacker, Air Lift, Firestone, and Black Ops Auto Works. Start with a matched shock and spring package or a full coilover kit, then layer in sway bars, chassis bracing, and camber adjustment hardware. Every part is filterable by year, make, model, trim, and drivetrain to confirm fitment before ordering. What This Category Covers Suspension is the highest-leverage handling upgrade on any vehicle. A properly matched shock, spring, and sway bar package produces measurable i...

View Suspension Products
Military & First Responder Discounts

Military & First Responder Discount Program

Black Ops Auto Works proudly honors active duty military, veterans, National Guard, reserves, police officers, firefighters, and EMTs with an exclusive 5% discount on all performance parts and carbon fiber upgrades. Verify instantly and start saving today.

Learn More & Apply

Your cart

×