Performance & Fitment

• • Application: Sprint Car (Winged or Non-Wing)

  • Length: 30”

  • Diameter: 0.987”

  • Type: Tubular (Hollow). This large-diameter hollow design delivers the massive spring rate required for high-load applications while significantly reducing unsprung weight, allowing the suspension to react instantly to track conditions.

  • Rate: 0.987

  • Non-Prestressed: This bar is omni-directional. Because it has not been pre-twisted during manufacturing, it can be installed on either the Left or Right side of the chassis. This allows for a more natural break-in and provides a predictable, stable handling profile.

  • Tuning Profile: The 0.987" tubular bar is an extreme tuning tool. It is typically utilized on the Right Rear for high-speed half-miles or "hooked-up" tracks where maximum support is required to prevent the chassis from bottoming out under centrifugal force.

Premium Construction

• • Material: Manufactured from high-strength alloy steel, through-hardened for exceptional durability and torsional fatigue resistance.

  • Precision Manufacturing: Centerless ground to a strict 0.987" tolerance. This ensures perfectly uniform wall thickness, which is critical for a tubular bar to provide a repeatable and predictable spring rate.

  • Heat Treatment: Advanced heat-treating maximizes the steel’s "memory," helping the bar return to its original index night after night.

  • Spline Quality: Precision-machined ends ensure a tight, zero-play interface with torsion arms and stops for immediate suspension response.

⚠️ Critical Fitment Exceptions

Operating at a 0.987" rate requires precise maintenance and chassis preparation:

• ❌ Settling & Ride Height: Because this bar is non-prestressed, it is more likely to "take a set" (drop in ride height) after its initial heat cycles. You must monitor your chassis heights closely during hot laps and adjust your torsion stops to compensate for the initial break-in.

• ❌ Internal Bore Care: Tubular bars are hollow; moisture trapped inside can lead to internal rust and stress fractures. To prevent sudden failure, keep the internal bore clean and lightly lubricated or use protective end caps.

• ❌ Extreme Tube Clearance: At 0.987", this bar is physically very thick and occupies nearly all the space inside a standard torsion tube. Your chassis tubes must be perfectly straight and surgically clean. Any internal binding will "lock" the suspension, resulting in a dangerously erratic handling car that skips or "skates" across the track.

• ❌ Rebound Damping: The 0.987" rate generates significant "snap" on rebound. Ensure your shock valving is aggressive enough to control this rate; otherwise, the car will "pogo" and lose traction on corner exit.

• ❌ Length Verification: This is a 30" tip-to-tip bar. Verify your chassis requirements, as many standard Sprint Car chassis utilize 29" bars.

• ❌ Hardware Stress: The torque generated by a 0.987" bar is immense. Inspect your torsion arms and stops for "egging" or spline wear; the massive loads can shear or strip standard or worn aluminum hardware. 

What’s Included

• One torsion bar

Warranty

Backed by a 1-year warranty for peace of mind.

78 in stock (can be backordered)