QA1 R257-170S Features:

QA1’s all-in-one solution gets your ’70-’81 Camaro or Firebird project on the road—fast. This package combines our 4-Link Suspension Kit with a custom QA1 Narrowed 9 in. rear housing, delivering top-tier performance with a seamless installation. No more searching junkyards or dealing with mismatched parts—every component is precision-tested by QA1 for a perfect fit right out of the box. Designed for serious power and aggressive driving, this kit provides the performance, ride quality, and adjustability you need—without the headaches of piecing it all together.

• Narrowed Housing – Designed to accommodate wide wheel and tire packages in mini-tubbed cars
• Fabricated Center Section – Engineered for maximum strength and durability
• Formed Trailing Arm Brackets – Reduce flex under high loads, ensuring a rigid suspension
• Heavy-Duty 3 in. OD, 1/4 in. Wall Axle Tubes – Built for the durability needed in high-performance applications
• 31-Spline 1541H Alloy Axles – Support up to 650 HP, while the housing handles up to 800 HP
• Durable Semi-Gloss Powder Coat Finish – Provides long-lasting protection with a clean, sleek look
• Drain Plug, Fill Plug, and Jack Pad – Standard features for easy maintenance and service
• Includes T-Bolts and Housing Studs – Essential for assembling axle shafts and installing third-members
• High-Quality Roller Bearings – Ensure smooth operation and long-term reliability
• 61-1/8 in. factory wheel mounting surface width for easy wheel and tire fitment
• Big Ford “New Style Torino Flanges” with 2.50 in. axle offset for easy brake compatibility
• 5 x 4-3/4 in. factory bolt pattern, standard fitment, and a wide range of wheel options
• 1/2 in. x 3 in. wheel studs for a better fit with alloy wheels
• 770 in. hub diameter
• Requires third member for Ford 9 in. housings with 31-spline axles

QA1 R257-170S Notes:

• Verify wheel and tire fitment on the vehicle before installation
• The center section (3rd member) is not included
• Narrowed housing is recommended to be used with custom offset wheels and mini tubs
• Welding is required
• QA1 Subframe Connectors strongly recommended
• May require exhaust modification