QA1 MG401-10400C MOD Series Front Pro Coil-Over System Double Adjustable Remote Canister 400lb

The QA1 MG401-10400C MOD Series Front Pro Coil-Over System is a double adjustable coil-over shock kit engineered for high-performance drag race, pro-touring, and street performance applications on GM and Ford platforms. This complete kit includes a remote nitrogen canister configuration and a 10-inch large tapered flat spring rated at 400 lb/in.

QuickTune Technology — Revalve Without Removing the Shock:

• Modular valve packs can be swapped out in minutes while the shock remains on the vehicle
• No oil path interruption — revalving does not expose the shock internals to debris or air contamination
• Medium compression and rebound valve packs included as standard; soft or firm packs available separately
• Independent low-speed bleed adjustment for fully separate control of compression and rebound characteristics

Pro Coil System Features:

• Compressed height: 8.63" | Extended height: 12.63"
• Includes 10" large tapered flat spring — rated 400 lb/in, ideal for front axle weights of 1,801–1,900 lbs
• Fully threaded shock body for ride height and weight balance fine-tuning
• Remote nitrogen canister — ideal for installation in tight chassis areas
• Indexable base eyelet allows repositioning for optimal shock and canister placement
• Lightweight high-travel spring design with fewer coils and smaller wire diameter for increased travel and reduced unsprung weight
• Stock mount upper configuration for straightforward fitment
• 100% dyno tested and serialized at QA1's Lakeville, Minnesota facility
• Made in the USA

The MOD Series shock is purpose-built for racers and performance enthusiasts who need the ability to adapt to changing track conditions quickly. With an expansive force curve capability and unprecedented tunability, this Pro Coil front system delivers a competitive edge whether on the drag strip, autocross course, or open road.