My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

QA1 DS304 Proma Star Single Adjustable Coilover Shock 9.50-12.75 Inch

Manufacturer

Picture for manufacturer QA1 Precision Products

Part Number

DS304
7 reviews
Sale Price

$254.95

In Stock (10+)

delivery box

Usually delivered within 2 days

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The QA1 Proma Star DS304 is a premium single-adjustable coilover shock engineered for serious performance applications. Featuring a machined aluminum body with bright anodized finish and a 5/8" chrome-plated solid piston rod, this shock delivers exceptional durability and consistent performance for street rods, autocross, drag racing, and road racing.

Key Features:

  • 18-position single adjustable valving allows simultaneous compression and rebound tuning with one knob
  • Machined aluminum body with bright anodized finish for corrosion resistance and heat dissipation
  • 5/8" chrome-plated solid piston rod eliminates flex under hard use
  • Double-lip piston seals with wiper seals prevent contamination and reduce seal drag
  • Deflective disc valving provides increased sensitivity and consistent response
  • Accurate piston-to-cylinder seal improves valving consistency and longevity
  • Polyurethane bushings included for mounting flexibility
  • Dyno tested and serialized for quality control
  • Revalvable and rebuildable by QA1 authorized service centers
  • Includes aluminum spring cap, spring seat with washer, and locking ring

Specifications:

  • Compressed Length: 9.50 inches
  • Extended Length: 12.625 inches
  • Recommended Ride Height: 10.75 to 11.25 inches
  • Recommended Spring Length: 7 to 9 inches
  • Mounting Style: Polyurethane eye bushings on both ends
  • Stroke: 3.125 inches

Proudly made in the USA. Sold individually.

Products specifications

Adjustable Mounting Bracket Included

No

Adjustable Valving

Yes

Body Diameter (in)

2.000 in.

Coil-Over Shock Type

Single-adjustable

Coil-Over Springs Included

No

Collapsed Length (in)

9.500 in.

Compressed Height

9.5

Extended Height

12.625

Extended Length (in)

12.625 in.

Gas Charged

No

Internal Design

Twin-tube

Lower Mount

Eyelet

Mounting

Poly

Notes

Remote wireless ready, can be used with QA1 two or four channel wireless remote controller.

Number of Valving Selections

18

Quantity

Sold individually.

Recommended Ride Height

10 3/4 - 11 1/4

Recommended Spring Diameter (in)

2.500 in.

Recommended Spring Length (in)

7-9 in.

Shock Body Finish

Clear anodized

Shock Body Material

Aluminum

Spring Length

7 / 9

Upper Mount

Eyelet

Prop 65

WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov

Title

QA1 Shock Absorber DS304

Fast Shipping. Good packaging. Very good pricing. Will shop from again.

Great price and received item in a timely and in great condition. Will definitely shop here again!

After searching for the best prices for the product that I wanted, I ended up with Autoplicity. I quickly got a response that my product has just been shipped and I am very impressed that Autoplicity is giving me an incentive to write a review on them. This tells me that this company is very concerned with the satisfaction of their customers. I am currently waiting for the order to arrive, but so far, I am extremely confident and happy with Autoplicity!

Found my part at a good price

Great price! Can't wait to see how the rest of the transaction goes.

Wow that was fast. I ordered a Pertronix Ignitor conversion kit. Not only were they by far the lowest price I could find, they shipped within hours of submitting the order. I got the shipment in less than 24 hrs, even though I ordered ground shipping. I was a little bummed that they did not offer free shipping, as I am used to with other online places, but with their fast turnaround, I am not begrudging it. Sure it might have been because they have a warehouse nearby, but it was still unexpectedly impressive. The part arrived and looks like it all there and should be good to go. <br><br>I can't vouch for their customer service, but so far I am pleasantly surprised.

My Superchips Cortex arrived within a few days of order and by far was the best price arround. Product arrived in perfect condition and worked as described. Great deal. Order #10984

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy