QA1 HK53-GMF2RN Level 3 Handling Kit with Narrowed 9-Inch Housing GM F-Body

The QA1 HK53-GMF2RN is a Level 3 complete suspension handling kit engineered for GM F-Body owners seeking maximum performance on the street and track. This comprehensive kit replaces both front and rear suspension with a fully integrated system built around QA1's MOD Series 4-way adjustable coilovers, a tubular adjustable 4-link rear setup, and a custom narrowed QA1 9-inch rear housing — all designed to accommodate wider wheels and tires.

Key Features:

• MOD Series 4-Way Adjustable Coilovers: Independently adjustable compression and rebound damping allows tuning for autocross, road course, or street use — valve packs can be swapped in minutes without removing the shock
• Lightweight Tubular Control Arms: Among the lightest available, featuring low-friction composite bushings that eliminate bind and flex while improving front-end geometry and camber gain
• Low-Friction Ball Joints: Extended 1-inch upper ball joint studs improve camber gain and cornering grip
• Adjustable Tubular 4-Link Rear Suspension: Eliminates wheel hop, improves traction, and enables easy adjustment of ride height, pinion angle, and wheelbase without removing links
• Custom Narrowed QA1 9-Inch Rear Housing: Narrowed 2-1/2 inches per side with a 56-1/8-inch wheel mounting surface width; supports up to 12-inch-wide wheels and 335mm tires (mini tubs required for maximum width)
• Big Ford New Style Torino Axle Flanges: 2.5-inch axle offset with a 5x4-3/4-inch bolt pattern for broad wheel compatibility
• Ride Height Adjustability: Up to 2 inches of front adjustment and 1.25 inches of rear adjustment over factory ride height
• Front and Rear Sway Bars + Subframe Connectors: Ties the chassis together for a planted, responsive feel in aggressive cornering
• Straightforward Installation: Front suspension is a full bolt-in; rear crossmember requires minimal MIG welding before the housing drops in
• Made in the USA: Manufactured in Lakeville, Minnesota

Narrowed Housing Specifications:

• Wheel Mounting Surface Width: 56-1/8 inches
• Narrowed: 2-1/2 inches per side
• Axle Flanges: Big Ford New Style Torino, 2.5-inch offset
• Bolt Pattern: 5x4-3/4 inches
• Max Wheel Width: 12 inches (335mm tires)

Installation Notes: Rear crossmember requires MIG welding. QA1 subframe connectors are strongly recommended. Exhaust modification may be required. Achieving maximum wheel and tire clearance requires mini tubs.

Warranty: QA1 provides a one-year warranty against defects in materials and workmanship from the original date of sale, with a limited lifetime warranty available on select shock absorbers.