Trask Billet Aluminum Swingarm Kit - 18+ Softail

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The Trask billet aluminum swingarm for 2018 and up Harley-Davidson Softails - get the most out of your performance build by carrying less weight with increased stability for carving corners and dominating the streets! Our high-grade billet aluminum swingarm is precision machined and comes complete with all the hardware you need to make the swap and be back in the wind with as little downtime as possible.

The Trask Softail swingarm uses the same race-proven technology and standards that has put the Trask Race team at the top of the Bagger Racing League.

Product Features:

Weight: Stock: 26.8 lbs - Trask: 20 lbs = 25% weight reduction


  • High-Grade T6061 Solid Billet Aluminum: Precision machined for superior strength and durability.
  • Stainless Axle: Designed for ultimate reliability.
  • Top-quality components ensure maximum performance.
  • Pocketed Joints: Engineered for maximum weight reduction. Bolt assembly eliminates the need for welding, and enhances ease of installation.

Stronger: Significantly increases rigidity for a smooth and controlled ride through every curve.

Lighter: Our meticulously crafted swingarm offers a 25% weight reduction over stock without compromising durability.

Customizable: Packaged raw and unassembled, the Trask swingarm is ready for your personalized finishing, allowing you to make a bold statement on the road.

Adjustable: Easily adjust the swingarm length up to 2” for enhanced control and stability during launches.

All-Inclusive: Includes brake caliper mount, brake line, and stainless axle with hardware, ensuring a direct factory replacement.

Proudly Made in the U.S.A.: The Trask Billet Aluminum Swingarm exemplifies the quality and precision of American craftsmanship.

Transform your 2018 and newer Softail build with the Trask Billet Aluminum Swingarm—engineered for unmatched performance. Ride with the confidence of champion-tested technology.



*Current lead time is 4+ weeks.  Please call to confirm.


Be sure to select your variant(s) before adding to cart (if possible).

With pride, Trask produces motorcycle performance products in the USA.