Product Summary

170 lbs. Spring Rate, Lower Trailing Arms Included

  • 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
  • QA1 MOD Shocks: Fine-tune your ride height and handling for a perfect stance and performance in any driving scenario
  • Easy Installation: Bolt-in design with minimal welding required reducing install time and effort
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Key Specs

MFG. Part #R356-170N
Spring Rate170 lbs.
Bushing MaterialSpherical bearing
Lower Trailing Arms IncludedYes
Upper Trailing Arms IncludedYes
See more specs

Need To Know

Truck Shipment

Truck shipments must be pre-paid with a credit card, certified check or money order

Quick and Easy Returns

Return Policy

QA1 R356-170N Details

QA1's all-in-one solution is a perfect upgrade for your 1st 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 measurements—each component is designed for a perfect fit, tested by QA1 to ensure hassle-free installation. Enjoy the performance, adjustability, and ride quality you need to handle serious power without ease.

ELIMINATE YOUR LEAF SPRINGS

Upgrade from leaf springs to QA1 MOD shocks 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. Narrowed 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 54-3/4 narrowed 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 Ultimate Shock Performance QA1 MOD shocks offer 4-way adjustability for the highest demands in performance and tuning

MADE IN THE USA

QA1 4-link and 9" housings are proudly

FITMENT NOTES

Confirm wheel and tire fitment before install Center section not included Narrow housing recommended for mini tubs Welding required QA1 Subframe Connectors recommended May need exhaust modification

  • 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
  • QA1 MOD Shocks: Fine-tune your ride height and handling for a perfect stance and performance in any driving scenario
  • Easy Installation: Bolt-in design with minimal welding required reducing install time and effort

Guides & Documents

QA1 R356-170N Specifications

KEY SPECS
MFG. Part #R356-170N
BrandQA1
Spring Rate170 lbs.
Bushing MaterialSpherical bearing
Lower Trailing Arms IncludedYes
Upper Trailing Arms IncludedYes
Trailing Arm Mount Braces IncludedYes
Panhard Bar IncludedNo
Upper Control Arms IncludedNo
Lower Control Arms IncludedNo
Calipers IncludedNo
Rotors IncludedNo
GENERAL
Sold in QuantityKit
NotesAxle is narrowed to accomodate wider wheel and tire packages in mini tubbed applications. Requires third member for Ford 9 in. housings with 31 spline axles.
GTIN Code806990230324
Bushing ColorNatural
Rear Shock TypeDouble adjustable coil-over
Rear Shock Struts IncludedYes
Spring FinishGray/Silver
Third Member IncludedNo
Axle Shafts IncludedYes
Watts Link IncludedNo
Adjustable Upper Trailing Arms TypeDouble adjustable
Adjustable Lower Trailing Arms TypeSingle adjustable
Adjustable Upper Trailing Arms IncludedYes
Bushings IncludedYes
Adjustable Panhard Bar IncludedNo
Adjustable Lower Trailing Arms IncludedYes
Trailing Arm Hardware IncludedYes
Air Bags IncludedNo
Coilover Springs IncludedYes
Suspension Package FinishBlack powdercoated

Questions & Answers

Fitment

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