QA1 MG507-09450D MOD Series Pro-Coil Aluminum Double Adjustable Front Coilover Kit with Remote Canister, 450 lb/in Spring

The QA1 MG507-09450D is a MOD Series Pro-Coil front coilover kit built for high-performance drag racing, pro-touring, and street rod applications. Featuring a lightweight billet aluminum twin-tube shock body with a black anodized finish, this kit delivers an industry-leading level of tunability through QA1's patent-pending QuickTune Technology — dry modular valve packs that can be swapped out in minutes while the shocks remain on the car, without interrupting the oil path or exposing internals to debris or air contamination.

The double-adjustable design with adjustable low-speed bleed provides fully independent control over compression and rebound characteristics. Medium compression and rebound valve packs are included as standard; soft and firm valve packs are available separately for even greater tuning flexibility. Combined with up to 576 valving selections, MOD Series shocks deliver an expansive force curve capability unlike any other coilover on the market.

Key Specifications:

• Shock type: Double adjustable MOD Series with remote canister
• Internal design: Twin-tube, nitrogen gas-charged
• Shock body: 3.000 in. diameter billet aluminum, black anodized finish
• Compressed height: 9.63 in. | Extended height: 14.50 in.
• Threaded adjustment range: 3.000 in. (0–2.0 in. lowering range)
• Upper and lower mounts: Eyelet with spherical bearings
• Includes 9 in. large pigtail (tapered) spring — Part No. 9HTSP450 — rated at 450 lbs./in.
• Includes Torrington bearings and all necessary hardware
• Recommended front-end weight: 1,901–2,000 lbs.
• No welding required — bolt-in installation
• 100% dyno-tested and serialized
• Serviceable and rebuildable by QA1 Authorized Service Centers
• Made in the USA

The remote nitrogen-charged canister and indexable base eyelet provide installation flexibility in tight spaces — simply unbolt and reattach the eyelet at the optimal angle for your application. The fully threaded shock body allows precise ride height adjustment for the perfect stance or fine-tuned weight balance. Sold as a kit.