Build Limitless® Halo Arms®

Say goodbye to ordinary jammer arms and hello to a new era of strength training. The patented, Made in the USA Build Limitless® Halo Arms® represent the future of workouts, combining innovation and effectiveness. The arms can be locked in place vertically or horizontally to keep movement in one direction, or they can both be unlocked to allow for more multidirectional movement. The Build Limitless® Halo Arms® work with any 3x3 (or 75mm x 75mm) upright with 5/8" or 1" offset hole spacing.

What is a Rack Attachment?

What rack attachments are

Rack attachments bolt or pin onto a power rack or squat stand to expand what it can do — J-cups and safety arms/straps (the essentials), plus dip bars, a landmine, a lat pulldown, weight-plate storage, roller J-cups, and more. They turn a rack into a whole gym.

Compatibility comes first

An attachment must match your rack’s upright size (2x2, 2x3, or 3x3) and hole pattern/hardware (e.g. 5/8-in vs 1-in holes, Westside spacing). Attachments are usually series-specific — a Monster Lite J-cup won’t fit an Echo upright — so confirm the fit before buying.

How it compares