QA1 MG501-10550C Pro-Coil MOD Series Double Adjustable Front Coilover Kit with Remote Canister

The QA1 MG501-10550C is a Pro-Coil Aluminum MOD Series front coilover shock kit featuring a remote nitrogen canister and double-adjustable valving with low-speed bleed control. Designed for serious street performance and pro-touring builds, this kit delivers a fully tunable suspension solution that installs in the stock shock location using the stock mount — no cutting or major fabrication required.

At the heart of this system is QA1's multi-patent-pending MOD Series shock featuring QuickTune Technology — dry modular valve packs that can be swapped out while the shock remains on the vehicle, without interrupting the oil path or exposing the shock to air and debris contamination. Medium compression and rebound valve packs are included standard, with soft or firm packs available separately for further tuning.

Kit Specifications:

• Compressed height: 10.13 inches
• Extended height: 15.00 inches
• Includes 10-inch large tapered flat spring — 550 lb/in rate
• Remote nitrogen-charged canister with indexable base eyelet for flexible installation angles
• Double-adjustable: independent low-speed compression and rebound bleed control
• Threaded aluminum shock body for ride height adjustment
• Stock mounting location — bolt-in installation
• 100% dyno tested and serialized
• Serviceable and rebuildable by QA1 Authorized Service Centers
• Made in Lakeville, MN, USA

The specially designed large tapered flat (conical) spring seats on the coilover shock at the lower end and in the factory spring bucket at the upper end, allowing a longer, lighter spring for greater stored energy and improved weight transfer. This design also distributes spring load to the frame rather than a single stud, improving durability. The remote canister can be configured in piggyback or remote placement to accommodate tight engine bays, with the indexable eyelet allowing precise shock and canister positioning.

The QA1 MOD Series Pro-Coil kit is ideal for drag racing, street performance, pro-touring, autocross, road racing, and street rod applications. Sold as a pair.