QA1 MG507-11300C MOD Series Double Adjustable Pro-Coil Coilover Kit with Remote Canister 11in. 300lb/in Spring

The QA1 MG507-11300C is a MOD Series double adjustable Pro-Coil aluminum coilover kit featuring a remote canister and an 11-inch, 300 lb/in large tapered flat spring. Built for high-performance drag race, pro-touring, and street rod applications, this kit delivers an unmatched combination of adjustability, tunability, and lightweight construction.

At the core of the MOD Series is QuickTune Technology — a system of dry modular valve packs that can be swapped out in minutes while the shocks remain on the car. This means the shock can be completely re-valved without interrupting the oil path or exposing the internals to debris or air contamination. Medium compression and rebound valve packs are included as standard, with soft and firm packs available separately.

Once valved to preference, the double-adjustable design with adjustable low-speed bleed provides fully independent control over compression and rebound damping characteristics. The nitrogen-charged remote canister mounts away from the shock body for easier installation in tight spaces, and the indexable base eyelet allows precise positioning of both the shock and canister.

The lightweight billet aluminum body is fully threaded for ride height adjustment, allowing fine-tuning of stance and corner weight balance. The included spring features a large tapered flat design — American-made with fewer coils and a smaller wire diameter for increased suspension travel.

Key Specifications:

• Shock Type: MOD Series double adjustable with adjustable low-speed bleed
• Body Material: Lightweight billet aluminum
• Canister: Remote nitrogen-charged canister
• Compressed Height: 9.63 inches
• Extended Height: 14.5 inches
• Included Spring: 11-inch large tapered flat, 300 lb/in rating
• Ride Height: Fully threaded body for adjustable ride height
• 100% dyno-tested and serialized
• Serviceable and rebuildable by QA1 authorized service centers
• Made in the USA

Ideal for drag racing, autocross, road racing, street performance, and street rod builds, the QA1 MG507-11300C Pro-Coil coilover kit offers professional-grade suspension tunability in a complete, ready-to-install package.