QA1 MG401-10400A Pro-Coil MOD Series Double Adjustable Coil-Over Shock Kit with Remote Canister and 400 lb/in Tapered Pigtail Spring

The QA1 MG401-10400A is a MOD Series Pro-Coil aluminum coil-over shock kit engineered for serious high-performance street and race applications. Featuring a double-adjustable valving configuration with independent low-speed bleed compression and rebound control, this kit gives drivers a wide range of tunability to dial in the perfect balance between ride comfort and track performance.

At the heart of the MOD Series is QA1's QuickTune Technology — dry modular valve packs that can be swapped out in minutes while the shock remains on the vehicle. This revolutionary system allows for complete revalving without interrupting the oil path or exposing the shock internals to air or debris contamination, an industry first.

Key Features:

• MOD Series double-adjustable valving with independent low-speed bleed compression and rebound adjustment
• QuickTune Technology: modular dry valve packs swappable without removing the shock from the car
• Remote canister design for improved heat dissipation and consistent damping performance
• Lightweight aluminum body construction reduces unsprung weight for improved suspension response
• Includes 10-inch tapered pigtail spring rated at 400 lb/in
• Compressed height: 8.63 inches | Extended height: 12.63 inches
• Stock-mount configuration for straightforward installation
• Medium compression and rebound valve packs included as standard

The QA1 MG401-10400A Pro-Coil kit is purpose-built for performance-minded builders who demand maximum adjustability and in-field tunability. Whether setting up for drag racing or pro-touring, this system delivers the precision damping control needed to respond to changing track conditions without compromise.