K6-2.0 Ultra Weight Stack Upgrade Kit Designed exclusively for K6-2.0 Ultra owners , this Weight Upgrade Kit elevates your rack into a more powerful, flexible, and fully refined training system. Built specifically for the K6-2.0 Ultra frame and pulley path, this kit is not compatible with any other racks or trainers . Dual-Stage Resistance, One Seamless System This upgrade combines a 160 lb selectorized weight stack with a stainless steel add-on weight holder , giving you both precision control and heavy-load potential in one clean setup. 160 lb Weight Stack (10 lb increments) Featuring 16 plates at 10 lb per increment, the stack allows fast, accurate resistance changes with a simple pin—ideal for functional training, isolation work, and progressive overload. Movable Weight Holder (10 lb self-weight) Each side supports up to 130 lb of additional plates , unlocking higher resistance for heavy pulls, presses, and lower-body movements when you’re ready to push beyond the stack. When not in use, the weight holder can be quickly secured to the top for clean, space-saving storage. Once you experience stack-based training, going back to constant plate swapping simply doesn’t make sense. PACKAGE INCLUDED: 16 × 10 lb Weight stack plates (160 lb total) 1 × Movable weight holder (10 lb self-weight) 1 × Weight selector pin and integrated labeling 1 × Installation Manual