Light Weight Hollow Rear Torsion Bars, Tubular. Porsche 914  ❭  FS19

High-performance Sway-A-Way tubular front torsion bars for the Porsche 914. Designed as a lightweight alternative to equivalent solid torsion bars, these hollow bars provide increased front suspension control while retaining the original torsion-bar suspension architecture. Available from 20 mm through to 23 mm.
SET OF 2, One pair is required per vehicle.

Fits:
Porsche 914-4: 1970 through 1976
Porsche 914-6: 1970 through 1972

  * Note:  Always confirm the existing front suspension and torsion-bar specification before ordering, particularly on cars that have previously been converted to 911-type front suspension components.


The tubular construction is engineered to provide the spring characteristics associated with the stated solid torsion-bar rate while removing unnecessary material from the centre of the bar.

This reduces weight without giving up the intended suspension rate, making the tubular range particularly attractive for lightweight road cars, track-day builds and competition Porsche 914s.

As the front suspension moves, the torsion bar twists along its axis. Increasing the torsion-bar rate increases resistance to this twisting movement, helping control front suspension compression, braking dive and body roll.

The result is a more responsive front end and greater suspension control when the torsion bars are correctly matched with the rest of the chassis setup.

Choosing the Correct Torsion Bar Rate

  20 mm Tubular (Competition Grade)

The 20 mm tubular front torsion bar is the mildest option in this particular hollow performance range. It provides a substantial performance-oriented front spring rate while retaining the weight advantage of tubular construction.

Spring Rate: Extreme increase over stock (Over 3x the stiffness of original 11mm bars)
Note: Designed to provide the same effective spring rate as a 20mm solid bar but with a significant weight advantage.

Recommended for:
•  Performance road cars
•  Fast-road Porsche 914 builds
•  Occasional track days
•  Autocross
•  Six-cylinder conversions
•  Cars using uprated dampers and rear springs

Critical Installation & Setup Notes
•  Mandatory Rear Upgrades: Running 20mm front bars with stock rear springs will result in extreme understeer. To maintain the 914's signature mid-engine agility, you must pair these with high-rate rear competition coil springs.
•  Shock Damping: Standard street shocks cannot control this spring rate. Competition-valved dampers (such as Bilstein RSR or custom-valved Koni Racing) are required to prevent the front end from becoming dangerously "bouncy."
•  Chassis Stress: A 20mm bar is incredibly rigid. Inspect your torsion bar mounting points and A-arm brackets for any signs of fatigue or rust. Reinforcing these areas is highly recommended for racing applications.
•  Indexing: Because these bars are so stiff, ride height adjustment is hyper-sensitive. A single spline of "clocking" adjustment will move the car’s height significantly. 

  21 mm Tubular (Tubular construction for weight savings)

Enhance your Porsche 914’s suspension with this 21mm tubular torsion bar set, designed for improved handling and reduced weight. A direct replacement for stock bars, these provide consistent performance and durability.

Recommended for:
•   Track-focused Porsche 914s
•   914 GT-style builds
•   High-performance engine conversions
•   Autocross
•   Wide-tyre applications
•   Performance-valved dampers

  22 mm Tubular (Tubular construction for weight reduction)

The 22 mm tubular front torsion bar is a high-rate performance option aimed principally at serious track and competition use.
Upgrade your Porsche 914’s suspension with this 22mm tubular torsion bar set, designed for enhanced handling and weight savings. A direct replacement for stock bars, these offer reliable performance while reducing unsprung weight.

Recommended for:
•  Dedicated track cars
•  Motorsport-inspired builds
•  High-grip tyres
•  Lightweight race cars
•  High-output engine conversions
•  Competition dampers
•  Appropriately uprated rear spring rates

  23 mm Tubular (Extreme Competition Grade)

The ultimate "weight-optimized" front suspension solution for competition-level Porsche 914s. These 23mm tubular torsion bars provide the maximum spring rate available for the 914 chassis while utilizing a hollow core to significantly reduce unsprung weight. Engineered for high-horsepower conversions (V8 or 3.6L swaps) and dedicated GT-class racing, these bars deliver extreme roll resistance and front-end stability without the heavy mass of a solid 23mm bar.

Spring Rate: Maximum performance increase (Over 5x the stiffness of original factory bars)
Note: The "T" designation indicates a tubular design. This bar provides the exact same spring rate as a 23mm solid bar but with superior suspension recovery speeds due to the lower weight.

Recommended for:
•  Dedicated race cars
•  Motorsport applications
•  GT-style competition builds
•  High-horsepower conversions
•  Racing slicks or very high-grip tyres
•  Competition-valved dampers
•  Fully developed suspension packages


Why Upgrade the Front Torsion Bars?

 The torsion bars act as the front springs in the Porsche 914 suspension.

Increasing their effective rate can provide:
•  Reduced nose-dive under braking
•  Reduced body roll
•  Sharper steering response
•  Improved suspension control
•  More consistent chassis behaviour under load
•  Better support for modern performance tyres
•  Improved track performance

The higher the torsion-bar rate, the more important it becomes to ensure that the rest of the suspension is correctly matched.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

FS19

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