QA1 MG501-10450C MOD Series Pro-Coil Double Adjustable Front Coilover Shock Kit with 450 lb/in Spring

The QA1 MG501-10450C is a MOD Series Pro-Coil front coilover shock kit featuring a double adjustable, twin-tube aluminum shock with a remote canister and a matched 10-inch large tapered flat spring rated at 450 lbs./in. This kit is engineered for high-performance street, drag race, and pro-touring builds that demand maximum tunability and ride height control.

At the heart of this system is QA1's patent-pending QuickTune Technology — dry modular valve packs that can be swapped out in minutes while the shock remains installed on the vehicle. This industry-first design allows complete revalving without interrupting the oil path or exposing the shock internals to debris or air contamination.

Key Features:

• MOD Series double adjustable design with independent low-speed bleed control for fully separate compression and rebound tuning
• Lightweight black anodized aluminum shock body
• Twin-tube construction with nitrogen-charged remote canister
• Indexable base eyelet — unbolt and reposition for optimal shock and canister placement
• Fully threaded shock body for ride height adjustment (0.0–2.0 in. lowering range)
• Includes 10-inch large tapered flat spring, 450 lbs./in. spring rate
• Compressed height: 10.13 inches | Extended height: 15 inches
• Medium compression and rebound valve packs included; soft and firm packs available separately
• 100% dyno tested and serialized
• Serviceable and rebuildable by QA1 authorized service centers
• Made in the USA at QA1's Lakeville, Minnesota facility

The Pro-Coil aluminum shock body reduces unsprung weight and delivers faster response compared to steel alternatives, optimizing overall suspension performance. Whether tuning for the drag strip, autocross, or spirited street driving, the QA1 MG501-10450C Pro-Coil coilover kit provides an unmatched combination of adjustability and precision.