X-3 Series Safety Strap Spotter Arms

Superset inside and outside your rack. These safety strap spotter arms combine the versatility of external spotter arms with the bar-saving protection of safety straps, so you can lift solo outside your rack while absorbing impact to your bar. Integrated safety straps deliver quiet catches during failed lifts and cut down on bounce, protecting your knurling so your bar stays looking fresh. Switch setups fast with two sturdy hitch pins per arm - or lift and lock them up vertically for on-rack storage.

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