Torsion Bar Set – Porsche 914 – 17.9mm Diameter (Pair)
SKU 1917 Category: Porsche 914 Torsion Bars
A precision-engineered front suspension upgrade for the Porsche 914. These 17.9mm torsion bars are designed as a high-performance replacement for the factory units, offering a significant increase in roll stiffness over the original 914 bars (which typically ranged from 11mm to 13mm). This diameter is the "gold standard" for 914 owners looking to sharpen steering response and reduce nose-dive without sacrificing the car's balanced, mid-engine handling characteristics.
Performance & Fitment
Application: Front Torsion Bar Set Diameter: 17.9mm Spring Rate: Significant increase over stock 914/4 and 914/6 rates
Porsche 914-4: 1970 through 1976
Porsche 914-6: 1970 through 1972
Note: This set is a direct replacement for the front factory bars. It is available in both solid and tubular designs to suit your specific build requirements.
Premium Construction
Material: Solid or hollow aircraft-grade alloy steel, through-hardened and heat-treated for maximum durability and fatigue resistance.
Manufacturing: Centerless ground to a precise 17.9mm diameter to ensure a perfectly linear spring rate and remove surface micro-imperfections.
Finish: Industrial-grade powder coating for superior protection against the elements and road debris.
Solid vs. Tubular (Hollow)
Both designs are engineered to provide the exact same spring rate, but they offer different physical characteristics:
Tubular Design: Features a 0.500" inner bore. These are approximately 2 lbs lighter per set than the solid version, reducing unsprung weight for faster suspension recovery.
Solid Design: Offers the classic, robust feel preferred for certain restoration and street applications.
⚠️ Installation & Performance Notes
Balanced Handling: Because 17.9mm front bars are substantially stiffer than stock, you must ensure your rear springs (coil springs on the 914) are matched accordingly. Running these with stock rear springs may induce significant understeer.
Indexing: The 914 front suspension uses the same spline-indexing system as the 911. Proper "clocking" is essential to achieve your desired ride height. Document the position of your original bars before removal.
Lubrication: Always apply a high-quality waterproof grease to the splines during installation to prevent "creaking" and ensure the bars do not seize in the A-arms or adjustment caps over time.
What’s Included
- (1) Pair of torsion bars
Warranty
Backed by a 1-year warranty for peace of mind.
2 in stock (can be backordered)