Torsion Bar Set - '65-'86 Porsche 911/912 and 1955-1959 VW Bug (29mm/Tubular)
SKU 1129T
Category: Porsche & Volkswagen Torsion Bars The ultimate weight-saving competition upgrade. These tubular 29mm rear torsion bars provide the extreme spring rate of a solid 29mm bar while shedding approximately 5 lbs of unsprung weight per set. By reducing the mass that your dampers must control, these bars allow for significantly faster suspension recovery and superior tire contact during high-speed cornering or aggressive track maneuvers.
Performance & Fitment
Application: Rear Torsion Bar Set (Tubular/Hollow) Length: 24 11/16” Diameter: 29mm (Extreme Competition / Weight Reduction)
Porsche 911 / 912 / 930: 1965 through 1986
Volkswagen Beetle (Swing Axle): 1955 through 1959
Premium Construction
Material: Tubular aircraft-grade alloy steel for an optimized strength-to-weight ratio.
Manufacturing: Centerless ground to ensure perfectly uniform wall thickness and a precise, linear spring rate.
Heat Treatment: Through-hardened and shot-peened to maximize fatigue life and prevent "settling" under extreme racing loads.
Finish: Industrial-grade powder coating for long-term protection against the elements and track debris.
⚠️ Critical Fitment Exceptions
Even if your car falls into the year ranges above, you must ensure it does not fall under these exceptions:
❌ G50 Transmission Porsche 911: This SKU is incompatible with 1987–1989 Porsche 911 models. The G50-equipped cars require longer torsion bars and have a different spline configuration.
❌ Post-1959 VW Beetle: These are "short" 24 11/16" bars. They are incompatible with 1960–1968 Swing Axle models (26 11/16" bars) and 1969+ IRS models (21 3/4" bars).
❌ Race-Only Stiffness Warning: A 29mm spring rate is over 200% stiffer than a factory 22mm bar. Even with the weight savings of a tubular design, the ride will be incredibly rigid. This setup is strictly recommended for track-dedicated vehicles, high-horsepower competition builds, or professional autocross setups.
What’s Included
(1) Pair of solid torsion bars
Warranty
Backed by a 1-year warranty for peace of mind.