Billet Series Sportster "Classic" Swingarms

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Billet Series Sportster "Classic" Swingarms

Our ALL NEW Billet Series swingarms feature one piece CNC machined sides custom designed to give you great looks and superior strength! Extensive pocketing on the inside gets the weight down to a minimum making these arms only slightly heavier than our conventional arms. Billet Series arms also include our AXS (axle interchange system) axle adjusters that are manufactured "in house" and made from super hard 2024-T8 aluminum. Our exclusive design allows you to change axle diameters in the future without having to purchase a whole new swingarm.

Arms are built using the stock size axle for that year, if a different size axle is required, please contact us after placing your order.


Available finishes:

  • Bare/Factory finish.
  • Black Powdercoat.


PLEASE NOTE: All Trac Dynamics swingarms are manufactured entirely in the United States and due to the wide variety of arms we make, they are all made to order. Production times can range from 3 to 8 weeks and depend on the model, style and finish of the arm. Please feel free to call if you have a special project or unavoidable deadline, we will see what we can do or what we can offer you.

Current production / shipping window on this swingarm is:
12-20-21 through 01-26-22


    For a special project, Width, or length, please call 661-295-1956.

    All Sportster swingarms require the use on an after-market brake caliper and hanger. You can source your own set-up or purchase our PM brake kit below.

    CLICK HERE for 4 Piston Brake Kit  

    CLICK HERE for Radial Mount Brake Kit  


    Need to upgrade your suspension? ClickHere for shocks and fork springs!


    CLICK HERE to see how a Trac Dynamics swingarm is made!

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