Suspension and Components› Suspension Kits

QA1 Precision Products, Inc

QA1 Four Link and Axle Housing Kit

$4,455.70

SKU: Q00B R257-170S

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Ships by Nov 9
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Overview

The QA1 R257-170S is a four-link suspension kit designed for 1970-1981 GM F-Body vehicles. This kit replaces traditional leaf springs with QA1 coilovers and a triangulated four-link system, paired with a custom QA1 9-inch rear housing. It offers adjustable ride height, ride quality, and instant center adjustability. The system is engineered for enhanced performance, handling, and ride quality, suitable for both street and track applications.

The QA1 9-inch rear housing features a fabricated center section for strength, formed trailing arm brackets to reduce flex, and heavy-duty axle tubes. The included 31-spline 1541H alloy axles support up to 650HP, with the housing rated for up to 800HP. The kit comes with a durable semi-gloss powder coat finish, drain and fill plugs, and a jack pad for serviceability.
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Part #: R257-170S

Product Overview QA1's all-in-one solution is a perfect upgrade for your 2nd Gen Camaro or Firebird. We've combined our 4-Link Suspension Kit with a QA1 9" rear housing to deliver top-tier performance and easy installation. No more scavenging for parts or struggling with measurementseach component is designed for a perfect fit, tested by QA1 to ensure hassle-free installation. Enjoy performance, adjustability, and ride quality you need to handle serious power without ease. Eliminate Leaf Springs Upgrade from leaf springs to QA1's coilover and triangulated 4-link suspension providing ride height, ride quality, and instant center adjustment for an aggressive stance and added performance. Easy Installation Our 4-Link Kit with 9" housing makes for an easy installation eliminating the need for custom fabrication which gets you on the road faster. Performance 9" Housing Fabricated Center Section: Maximized strength and durability Formed Trailing Arm Brackets: Minimize flex under heavy loads Heavy-Duty 3" Axle Tubes: Built for high-performance 31-Spline Axles: Support up to 650HP, with housing rated up to 800HP Durable Powder Coat: Sleek and long-lasting finish Convenient Maintenance: Drain plug, fill plug, and jack pad included T-bolts, studs, and high-quality roller bearings for smooth assembly and operation Helpful Specs 61-1/8" factory wheel mounting width Big Ford New Style Torino Flanges for brake compatibility 5x4-3/4" bolt pattern, ideal for a range of wheels x 3" wheel studs for alloy wheels Best-in-Class Warranty QA1 shocks come with a Limited Lifetime Warranty when registered, while 4-link and 9" components have a 1-year warranty for defects Made in the USA QA1 4-link and 9" housings are proudly made in the USA Fitment Notes Confirm wheel and tire fitment before install Center section not included Stock-width housing recommended for stock wheel tubs Welding required QA1 Subframe Connectors recommended May need exhaust modification

Features:

  • Complete Kit: Includes QA1's 9" rear housing and triangulated 4-link, designed for a perfect fit.
  • Easy Serviceability: Convenient access with a dedicated fill port, drain plug, vent port, and jack plate for easy rear-end maintenance.
  • Adjustable Coilovers: Fine-tune your ride height and handling for a perfect stance and performance.
  • Easy Installation: Bolt-in design with minimal welding required, reducing install time and effort.

QA1 R257-170S Four Link Kit with OE Width 9in., 70-81 GM F Body, Double Adjust

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandQA1 Precision Products, Inc
Part NumberQ00B R257-170S

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