Torsion Bar - Sprint Car - 29" Long - Tubular - .950 Rate - Not Prestressed
Category: Sprint Car Torsion Bars (Tubular)
Optimize your Sprint Car’s suspension with this 0.950" rate tubular torsion bar. At 29” in length, this hollow-core bar is designed for racers who prioritize a lightweight unsprung mass and a "snappier" chassis response. Unlike most high-performance bars, the 290950TS is non-prestressed, offering a specific feel favored by tuners who prefer a natural break-in period and a linear rate progression.
Performance & Fitment
Application: Sprint Car (Winged or Non-Wing)
Length: 29”
Diameter: 0.950”
Type: Tubular (Hollow). By removing the center material, this bar provides the stiffness of a large diameter bar with significantly less weight than a solid equivalent.
Rate: 0.950
Tuning Profile: A 0.950" tubular bar is a versatile rate for Sprint Cars, frequently used on the Right Rear for slick-to-medium tracks or on the Left Rear to help the car "get up on the bars" in heavier conditions.
Non-Prestressed: This bar has not been twisted in one direction during manufacturing. This allows it to be used on either the left or right side of the car without a dedicated rotational direction, providing a more "natural" feel as the steel cycles.
Premium Construction
Material: Manufactured from aircraft-grade alloy steel for high tensile strength and long-term durability.
Precision Manufacturing: Centerless ground to ensure a perfectly consistent outside diameter. This ensures the spring rate is repeatable from bar to bar.
Heat Treatment: Advanced heat-treating maximizes the steel's structural integrity, allowing for high torsional cycles without premature fatigue.
Finish: Durable powder coating protects the exterior from the abrasive and corrosive environments of dirt circle track racing.
⚠️ Critical Fitment Exceptions
To ensure safety and performance, verify that your setup does not fall under these common exceptions:
❌ Break-In & "Set": Because this bar is non-prestressed, it is more likely to "take a set" (drop in ride height) after the first few heat cycles compared to a prestressed bar. You must monitor your ride heights closely during the first night of racing and adjust your torsion stops accordingly.
❌ Internal Corrosion: As a tubular bar, moisture can collect inside the hollow bore. Internal rust can lead to stress risers and sudden failure. It is highly recommended to keep the internal bore clean and lightly oiled or capped.
❌ Tube Clearance: At 0.950", this bar has a large footprint. Ensure your chassis torsion tubes are straight and free of debris. Any internal binding will cause the suspension to "spike," resulting in a dangerously erratic handling car.
❌ Length Verification: This is a 29" tip-to-tip bar. While standard for many Sprint Cars, some newer chassis or specific regional classes may require 30" or 31" bars. Always measure your current bars before ordering.
❌ Solid vs. Tubular Rate: A 0.950" tubular bar is softer than a 0.950" solid bar. If you are switching from a solid bar, you will need to adjust your setup to account for the softer effective spring rate.
What’s Included
One .950 rate, 29″ tubular torsion bar
Warranty
Backed by a 1-year warranty for peace of mind.