SKU: DD401 | UPC: 806990059727
QA1 DD401 Proma Star double adjustable coil-over shock delivers precise control for custom chassis and suspension builds where direct-fit parts fall short. This aluminum-bodied shock features 10.125-inch compressed height and 14-inch extended height with 3.875-inch travel providing instant ride quality improvements and handling gains. Pair it with a 2.5-inch ID spring for drag racing street performance or road course setups.
| Year | Make | Model | Submodel |
|---|---|---|---|
| Custom | Universal | Chassis Builds | Drag/Street/Track |
| Custom | Universal | Suspension | Performance Applications |
Shop All QA1 Coilovers, Shocks, Springs, Handling Kits & Suspension Components Browse premium QA1 suspension parts and performance components at Black Ops Auto Works, including coilover kits, shock absorbers, lowering kits, handling kits, suspension conversion systems, four-link systems, springs, struts, rod ends, linkage rods, tube adapters, and suspension hardware for muscle cars, trucks, street builds, drag cars, and pro-touring applications. QA1 is one of the most recognized names in the suspension category, known for engineering products that improve ride quality, adjustability, handling, weight transfer, and overall vehicle control. Why Choose QA1 Suspension Products QA1 products are built for enthusiasts looking to improve suspension performance on classic, street, strip, and performance truck platforms. Popular reasons customers choose QA1 include: Adjustable suspension tuning for street and track use Improved handling, ride control, and weight transfer Vehicle-specific...
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Shop shocks and struts at Black Ops Auto Works for improved ride control, handling, stability, comfort, towing support, off-road performance, and suspension replacement. This collection includes shock absorbers, monotube shocks, gas shocks, hydraulic shocks, strut assemblies, front struts, rear shocks, coil-over shocks, reservoir shocks, steering dampers, suspension hardware, and vehicle-specific dampers for cars, trucks, SUVs, Jeeps, off-road builds, and performance vehicles. Use this Shocks and Struts collection to find the right suspension upgrade by vehicle, ride height, driving style, and product type. Replacement shocks and struts help restore ride quality, performance shocks improve control and stability, heavy-duty truck shocks support larger vehicles and lifted setups, and off-road shocks help improve durability and control on rough terrain. Shop Shocks and Struts by Brand Black Ops Auto Works carries shocks, struts, and suspension dampers from trusted brands including Bils...
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Aftermarket suspension systems improve handling, ride quality, and ride height adjustment beyond what the factory suspension provides. From lowering springs and coilover kits for sport handling to lift kits and leveling kits for truck and SUV off-road capability, quality suspension components transform how a vehicle rides and handles. Popular Suspension Upgrades Popular suspension upgrades include coilover kits for adjustable ride height and damping, sport lowering springs for improved handling and reduced body roll, performance shock absorbers and strut assemblies, sway bar and end link upgrade kits, subframe brace kits, and complete suspension packages for lifted trucks and off-road SUVs. Alignment kits including camber bolts and camber arms are also frequently ordered after ride height changes. What is the difference between coilovers and lowering springs? Coilovers are complete shock and spring assemblies with adjustable ride height set by threading the spring perch on the shock...
View Suspension ProductsLooks pretty nice, pricing was good and the reinforcement is a big plus.
I emailed customer service to inquire about when it would be shipped. They checked and emailed me with the answer. Customer service is A1
Installation was easy. The price is good and it looks great on the truck.
Looks as good as it fits,
I love it great sound and response
Car totally diferent with the whole kit. Ive stood next to wide bodies and my car gets more attention at times . Ive bought the kit twice already.
Fantastic emblem! Exactly what I was looking for. Great quality emblem.
Worked great for my aftermarket hood on my Chrysler 2023 300C. Thanks
Easy to install and makes car sound even better love the winn
Awesome customer support. Had multiple issues with fedex and these guys were excellent in helping me sort everything out. The drop springs are great too! I highly recommend
100/100! perfect CF crafted cold air intake for 6.4 jeep .. even makes my AWE exhaust sound even deeper and you cam here this thing sucking when accelerating even at normal speeds🥶
