A torsion bar is a type of spring, and like coil and leaf springs, can be upgraded for performance, whether it’s to improve handling, load carrying capacity, or change ride height. Torsion bars were used on some performance cars in the past, but today they can be found primarily on late model trucks and SUVs, especially 4WD models. Unlike conventional springs, torsion bars can be adjusted or modified instead of replaced to achieve some performance goals.

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  • Hotchkis® Torsion Bars
    (0 reviews)
    # sp9360
    Torsion Bar Kit by Hotchkis®. Show the imports that your classic muscle car concedes nothing when it comes to handling with a set of stronger replacement front torsion bars. Stiffer spring rate maintains ride comfort while reducing...
  • Diversified Machine® Torsion Bar (SRC-0950-30)
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    # mpn359119793
    Torsion Bar by Diversified Machine®. Standard Torsion Bar 950. {short description}
  • Pro Comp® Level Lift Torsion Key Kit
    (0 reviews)
    # sp10485
    Level Lift Torsion Key Kit by Pro Comp®. Pro Comp is the fastest, safest, least expensive way to bring the front of your Vehicle level with the rear. This gives you the clearance and ability to add wheels and tires up to 32" in...
  • Belltech® Lowering Torsion Key Kit
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    # sp8152
    Lowering Torsion Key Kit by Belltech®. This is a front lowering kit for vehicles with front torsion bars that gives your truck aggressive handling and stance while retaining factory ride quality. Includes two replacement keys which...
  • Tuff Country® Torsion Bar Leveling Keys
    (0 reviews)
    # sp10066
    Torsion Bar Leveling Keys by Tuff Country®. Tuff Country’s torsion bar keys are designed as an easy solution to level trucks with factory torsion bars. These replacement torsion bars reindex the factory torsion bars which lifts...
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  • Superlift® Torsion Bar Adjuster Arms
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    # sp8987
    Torsion Bar Adjuster Arms by Superlift®. Superlift's Product Development staff, arguably the industry's most experienced and talented group, utilizes the latest computer modeling technology to aid in product design. Most of...

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Although some torsion bars have been mounted transversely, they are typically positioned longitudinally, with one end attached to the frame and the opposite end to a control arm. The torsion bar twists when the control arm moves upward, when the vehicle hits a bump, and then unwinds after the bump, forcing the control arm and tire back down. The torsion bar’s spring rate is determined by the material it's made of, diameter and length.

The quality that sets torsion bars apart from other springs, which is especially beneficial for trucks and SUVs, is their adjustability, to change ride height. But just “cranking up” the factory torsion bar keys is not the best way to level or lift the front end, as this can result in a harsh ride. We offer torsion bar keys that reindex the factory torsion bars to preload the bar or are reconfigured to widen the range of adjustment, to provide up to 3 inches of lift. These keys are typically made of stronger materials like forged steel. They are included in lift kits and leveling kits and longer shocks may be needed.

If a different spring rate is desired to handle heavier weight or improve handling, rather than just a change of ride height, then performance torsion bars with varying spring rates are available. Torsion bars with a higher spring rate than stock will prevent bottoming out and provide better vehicle control on road or off. These bars are also made stronger than OE, in materials like chrome moly steel, and treated to a durable powder coat finish. This kind of toughness is needed for vehicles driven off-road, where the torsion bar are exposed to potential impact damage from obstacles.

For extremely high lifts, it may be necessary to relocate the torsion bars. There are several ways to achieve this. For some applications we offer brackets that lower the torsion bar crossmember. There are also brackets that locate the torsion bars further up on the control arms, leaving the ends that mount to the frame in their original location. The latter maintains the factory torsion bar angle, keeps the bars tucked up out of harm’s way, and doesn’t reduce ground clearance. These brackets are included in lift kits that come with everything needed to give you the looks and performance you want for your truck.

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Performance Torsion Bars Reviews

Average rating:  5  4.9 - 3 reviews
Read All Torsion Bars Reviews
4.8 of 5
After I removed my old torsion keys, spacers, and bolts the new parts slid easily right into place on the torsion bars. After cranking the bolts to have the front sitting up level it looked great and level with the back that I have a 3"block under. The result is even better than expected, great ride quality and the best price around.
JPosted by John (Northridge, CA) /
1999 GMC CK Pickup
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