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QA1 Precision Products DD403 Proma Star Double Adjustable Coilover Shock - 11.13 to 15

Part of: QA1 Precision Products Proma Star Double Adjustable Coilover Shock

Other options in this family: QA1 Precision Products DD511 QA1 Precision Products DD404 QA1 Precision Products DD302 QA1 Precision Products DD303 QA1 Precision Products DD301

Manufacturer

Picture for manufacturer QA1 Precision Products

Part Number

DD403
22 reviews
Sale Price

$334.95

In Stock (10+)

delivery box

Usually delivered within 2 days

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Live-in-stock inventory

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Fitment guaranteed

Fitment guaranteed

Product Details

The QA1 Precision Products DD403 Proma Star is a premium double adjustable coil-over shock designed for custom racing and high-performance applications. This shock features independent compression and rebound adjustment, allowing precise tuning of suspension dynamics to match specific track conditions and driving styles.

Key Specifications:

  • Compressed length: 11.13 inches (11-1/8")
  • Extended length: 15 inches
  • Stroke: 3.87 inches
  • Body diameter: 5 inches
  • Rod diameter: 4 inches
  • Mounting: Spherical bearing both ends (Eye-B/Eye-B)
  • Double adjustable: Independent compression and rebound damping control
  • Coil-over design for custom spring selection

Features and Benefits:

  • Proma Star series construction delivers race-proven performance and durability
  • Double adjustment capability allows fine-tuning of both compression and rebound separately for optimal handling
  • Spherical bearing mounts on both ends eliminate binding and ensure smooth suspension articulation
  • Coil-over design allows custom spring rate selection to match vehicle weight and application
  • 5-inch body diameter provides increased oil capacity for better heat dissipation and consistent performance
  • Rebuildable design ensures long-term serviceability

The DD403 is ideal for circle track, road racing, off-road, and custom street rod applications where maximum adjustability and performance are required. The custom mount configuration makes this shock suitable for fabricated suspension systems and chassis builds requiring specific mounting solutions.

Products specifications

Adjustable Mounting Bracket Included

No

Adjustable Valving

Yes

Body Diameter (in)

2.000 in.

Bushing Color

Natural

Bushing Material

Steel

Coil-Over Shock Type

Double-adjustable

Coil-Over Springs Included

No

Collapsed Length (in)

11.125 in.

Compressed Height

11.125

Extended Height

15

Extended Length (in)

15.000 in.

Gas Charged

No

Internal Design

Twin-tube

Lower Mount

Bearing

Mounting

Bearing

Notes

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

Number of Valving Selections

324

Quantity

Sold individually.

Recommended Ride Height

12 1/2 - 13 1/4

Recommended Spring Diameter (in)

2.500 in.

Recommended Spring Length (in)

10 in.

Shock Body Finish

Clear anodized

Shock Body Material

Aluminum

Spring Length

10

Upper Mount

Bearing

Prop 65

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

Title

QA1 Shock Absorber DD403

Quick and easy

Very good service and fast delivery.

Simple and to the point.

Quick & easy.

Excellent product and service from start to finish.

Purchased four 205 75 r15 vercellis for the price and quality very satisfied.

By far the best price I found online for tires. It was a very easy ordering process, I got order and shipment updates all along, and the tires were delivered quickly. All-in-all a great experience with Autoplicity.

I had an issue with the wire harness. Costumer service is working wit me now

excellent response, quick turn around on my order! easy to use site. great transaction

Really Good. The right battery for my motorcycle.

Fast and convenient!

No immediate info as to if this is in stock and will arrive in 2 days as I paid the addtl34.

All thumbs up

Autoplicity had the best price I could find on an Invidia downpipe for my 08+ Subaru STI. I had to pay for shipping but the total price was still well below their competitors who advertised free shipping.<br><br>Thanks Autoplicity!<br>Matt

This was my first time shopping with Autoplicity after finding them on a froogle.com (google shopping) search for low priced Hawk brake pads. The shopping experience was great, checkout was smooth, and the prices were unbeatable. I only give five stars for perfect experiences, and this was almost there. My only gripe is the order was placed on Friday and not shipped until Tuesday, with the shipping confirmation email going out Wednesday. I guess I'm spoiled by Amazon same/next day shipping and instant notifications. It would seem the notification issue could be fixed easily... Thanks Autoplicity - I'll be back!

Quick and easy! the best!

Great price and in stock, if shipping goes well, then stellar my review stays 5 stars.

Looked my item up on Amazon and autoplicity was the lowest by far. I ordered on Sunday, it was shipped on Tuesday, and I received it on Thursday.

Best price and quick shipping. There was no tracking info provided but my items came in less than a week.

Great prices I found exactly what I needed without paying that much, I found the product lower than thee competitors. They send me emails and keep me posted on my product and give me a tracking number so I can locate where its at. Im excited to recieve my mishimoto oil catch can.

Was able to find parts I needed easily and at a great price!

The roof rack I ordered came quickly, shipping was free, and far cheaper than anyone else.<br>This was my first order, and I will order again.

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