Torsion Arm LR XP Black

The Torsion Arm LR XP Black from ALLSTAR PERFORMANCE is a purpose-built rear torsion arm engineered for sprint car chassis tuning and suspension geometry optimization. This driver-side component is essential for competitors and fabricators who demand precise suspension control and adjustability in high-speed racing environments. Torsion arms directly influence anti-roll characteristics, weight transfer, and cornering stability—making quality construction non-negotiable in competitive applications.

Manufactured from aluminum and finished in black anodize for corrosion resistance and durability, the Torsion Arm LR XP Black features a 1-inch spline connection with a 5-inch offset and 16-inch length—geometry optimized for rear suspension articulation in open-wheel racing. The 5-inch offset allows fine-tuned adjustment of roll stiffness distribution without requiring frame modifications, while the anodized aluminum construction minimizes unsprung weight while maintaining structural rigidity under cornering loads. All necessary hardware is included, simplifying installation and ensuring proper fitment without additional sourcing.

Sprint car builders and chassis tuners rely on precision torsion arms to dial in suspension balance across varying track conditions. The driver-side configuration integrates with existing sprint car rear suspension systems where 1-inch spline torsion bar setups are standard. Weighing just 3 pounds, this component reduces unsprung mass while its compact dimensions (5.5 x 2.25 x 21 inches) ensure proper clearance in tight rear-end packaging. Installation requires basic mechanical tools and knowledge of suspension geometry; verification of spline compatibility with your torsion bar diameter is essential before ordering.