Fully protect the knurling on your barbell with these versatile, heavy-duty Flat Sandwich J-cups. These cups, which are compatible with 4000 and 5000 Series power racks, feature plastic lining for total protection of your barbell and the power rack uprights. Plus, the hardware is on the side of the cups, so there’s no metal contact with your barbell. These cups, with a larger opening than standard J-cups, work with regular and oversized specialty bars.  

Flat J-cups are tough, with a weight capacity of 1,000lbs. They feature high-end finishes, such as a stainless-steel REP logo plate, and they’re laser cut and bent with rounded corners. The bottom liners are one piece to prevent rotation of the liners. The 4000 Series cups are made for 3x3” uprights with 5/8” pins. The 5000 Series J-cups are designed for 3x3” uprights with 1” pins. They extend off the rack 6”. These cups are sold in pairs.