Pro Series T-47 Trolley & Lever Arm Kit

Safety and Stability: Each set of Jammer arms includes (2) 1" locking pins, providing an additional safety lock for trolley front-to-back movements. This, combined with the 1" twist lock side adjuster, ensures a secure and stable training environment. Robust Tensioning System: The tensioning system, with back rollers pressing against the upright, guarantees smooth adjustments. This innovative design allows compatibility with other 3x3" racks featuring staggered 1" holes. Enhanced Functionality: Numbered uprights, (4) machined acetal rollers for seamless gliding, and a locking mechanism to keep the arm away from the upright ease adjustments and enhance safety.

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