Catapult arms are designed to put maximum power to the ground to deliver ultimate performance off the line. Stock trailing arms are flimsy and weak, leading to poor handling and excessive wheel hop. Competitors steel lower trailing arms with polyurethane bushings are heavy and don't allow the axle to move freely throughout the range of motion. PST's Catapult Billet Aluminum Upper Trailing Arms solve this problem with an innovative solution that delivers smooth, consistent, predictable handling for your GM A-body: the Alu-Max Pivot Joint, a low-friction spherical joint that allows for 30 degrees of articulation for bind-free movement.
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Available to the 48 Continental U.S.
Available on all parts, for as long as you own your muscle car.
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Making yesterday's muscle cars handle using today's tech.