30in Tubular Torsion Bar 1065 Rate Hollow

The 30in Tubular Torsion Bar 1065 Rate Hollow from MPD Racing is a purpose-built suspension component designed for high-performance sprint cars and competition vehicles where spring rate precision and weight savings are non-negotiable. Unlike traditional leaf spring or coil spring setups, torsion bars offer independent suspension tuning with a compact footprint—critical for drivers who demand responsive handling and fine-tuned load management across diverse track conditions. This hollow tubular design exemplifies modern sprint car engineering, combining strength with minimal rotational mass.

Constructed from chromoly steel, the 30in Tubular Torsion Bar 1065 Rate Hollow delivers a 1,065 lb-in spring rate—a specification that governs how much resistance the bar provides per degree of twist. The 1.5 x 1.5 inch tubular cross-section optimizes the strength-to-weight ratio, while the hollow core eliminates unnecessary mass without sacrificing torsional rigidity. Featuring a 1-1/8-inch 48-pitch spline interface, this bar integrates seamlessly into MPD Racing suspension systems and accommodates precise adjustment through spline engagement depth. At just 4.8 lbs, every pound saved in unsprung weight improves acceleration, braking response, and tire contact consistency—factors that separate competitive lap times from mediocre ones.

Sprint car competitors, fabricators, and suspension specialists rely on the 30in Tubular Torsion Bar 1065 Rate Hollow for front-end geometry tuning and load distribution management in short-track racing applications. The chromoly construction withstands repeated shock loads and thermal cycling without fatigue crack initiation, ensuring season-long durability under extreme lateral and vertical forces. Installation requires proper alignment with torsion bar mounts and spline verification; work with experienced suspension technicians to confirm mounting orientation and preload setup for your specific chassis configuration. Available for sale through TacticalSurplusUSA as a standalone component or integrated into complete suspension packages.