Athena® - Selectorized Weight Stack Upgrade

$81.24 ~~$162.49~~ In stock

The Athena® Selectorized Weight Stack Upgrade from REP Fitness enhances your home gym by adding a smooth selectorized weight stack, compatible with REP rack series 4000 and 5000.

Available in Single-Side or Dual-Side configurations
Designed for use with REP Fitness 4000 and 5000 series racks
Product requires assembly upon receipt

Customer Reviews (4.8 / 5 · 5 reviews)

Christopher ★★★★★ Aug 19, 2026

The glide on this thing is buttery smooth, honestly feels like a commercial gym upgrade for my rack. I paired it with the 4000 series and the pin drops are so much quieter than loading plates every set.

Olivia K. ★★★★★ Aug 17, 2026

Was nervous about the install on my 4000 series rack, but the brackets lined up perfectly and it took about an hour. The weight stack itself feels rock solid with zero clanking, and switching pins mid-set is way faster than messing with plates.

Riley ★★★★★ Aug 16, 2026

The stack glides so smoothly it honestly makes my old plate changes feel prehistoric. Setup took a bit of patience with the rack rails, but the resistance curve is buttery and the drop-in fit for my 5000 series was spot on.