Detroit Speed FN988 Axle Shafts Torque Arm 31 Spline 070820DS

Detroit Speed FN988 Axle Shafts Torque Arm 31 Spline 070820DS

1982-1992 GM F-Body

Detroit Speed

SKU
070820DS
$710.95
Estimated Shipping Date: Aug 26, 2026
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Installation Guide
California Prop 65
Emissions Code 4

When it’s time to put serious power to the ground, stock axles simply aren’t enough. Detroit Speed’s 31-Spline Axle Shafts are precision-engineered to withstand the torque, traction, and punishment of modern performance builds. Designed for Pro Touring enthusiasts, racers, and high-horsepower street cars, these shafts provide the strength and reliability your Camaro or Firebird needs to perform flawlessly under load.

ENGINEERED FOR STRENGTH

Detroit Speed’s 31-Spline Axle Shafts are crafted from premium forged alloy steel and heat-treated for maximum strength and durability. The precision machining process ensures proper fitment and concentricity, minimizing vibration and maximizing power transfer. Compared to OEM axles, these shafts offer vastly improved torsional strength, making them ideal for LS swaps, big-block conversions, or any F-Body putting down serious power.

BOLT-IN CONVENIENCE

These axles are designed for straightforward installation and perfect integration with Detroit Speed’s FN988 torque arm housing and rear suspension systems. The splines, bearing surfaces, and dimensions are engineered for OE-level fitment, ensuring a seamless upgrade without guesswork.

FEATURES & BENEFITS

  • Designed for 1982–1992 Camaro & Firebird (3rd Gen F-Body)
  • Forged alloy steel for superior torsional strength
  • Heat-treated and precision-machined for exact tolerances
  • OE-fit dimensions ensure simple installation
  • Compatible with DSE FN988 torque arm housings
  • Ideal for high-horsepower street and track builds
  • Detroit Speed engineering quality – built for reliability and performance

FITMENT NOTES

  • Fits: 1982–1992 Chevrolet Camaro & Pontiac Firebird
  • Spline Count: 31-spline
  • Bolt Circle: 5 x 4 ¾”
  • Stud Size: M12-1.5 Press in
  • Pilot Center: 2.775 in
  • Install Type: Direct-fit replacement
  • Compatibility: DSE FN988 Housing, aftermarket differentials
  • Applications: Street, Pro Touring, Track Use

Specifications

  • Emission Code4
  • Axle Shaft Spline Quantity31
  • Axle StyleFN988
  • Bearing(s) IncludedYes
  • ManufacturerDetroit Speed
  • Product TypeAxle Shafts
  • QuantityPair
  • Axle End StyleGM Flush Mount Flange

FREQUENTLY ASKED QUESTIONS (FAQ’s)

What is the advantage of 31-spline axles?

31-spline axles offer increased surface area and strength over 28-spline designs, allowing them to handle more torque and horsepower.

Are these axles a direct replacement for factory axle housings?

NO. They are engineered to fit Detroit Speed torque arm rear axle housings for the 3rd Gen F-Body applications

What material are these axles made from?

High-strength forged alloy steel, heat-treated for maximum durability and torsional rigidity.

Can I use these with the FN988 torque arm housing?

Yes. They are designed to pair perfectly with Detroit Speed’s FN988 housing for 3rd Gen applications.

Who should use these axles?

Builders, fabricators, and enthusiasts seeking a stronger, more durable axle solution for high-performance or Pro Touring builds.

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