The HD adder pin allows you to add up to an additional 300lbs to your weight stack. It can be compatible with other brand machines as long as your weight stack stem holes are larger than 10mm and your plates are 4" in depth. Its important that the lips on the adder pin sit flush to the stack to support its weight capacity. Thinner than 4" plates would result in bending at high capacity. Larger than 4" will not thread.
NOTE: The HD adder pin can be used with the BX2 if you do not install the small black beauty covers on the outside of the BX2. There are some plate size limitations when using on the BX2. 5lb, 10lb and 25lb regular Olympic plates work along with some 35lb plates. 45lb plates and bumper plates do not fit because of the compact smith machine design that pushes the weight stacks closer to the rear plate storage.
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Excellent dual sided gym pin. It has meet my needs to add additional weight to the stack, particually with lat pull down and low rows. A few things I noticed taking pin off/on can be a little cubersome, sometimes getting it to screw back together takes abit longer. Pin can be alittle uneven with not being flush aginst the weight stack. Overall I am happy with the purchase and quality of the product would buy again definitely.
Nice finish, quality. Not much to say they work, only thing is I put blue loctide on one side of the threads to prevent guessing what side is coming undone when removing them. Definitely get these with your gym rack.
Great necessary upgrade until the 1:1 low pulley kit gets here for heavy seated rows. Will still be asset on other side of cage after low pulley install.
Good build quality. Package arrived on schedule. Ordered two so it came a dual sided pin which is what i expected. Haven't maxed out the pin(s), but have been able to load 2 45lb plates on each side with no problems.
Great fit, easy enough to take on and off. The only gripe is that it doesn't show how much it weighs. But....I emailed customer service and had a response in less than 48 hours. She's coming in at 10#'s. I didn't see the first run but this run's solid.