The KingPin by GymPin 10mm (25/64") pin.
Extra-long version of our Original 2" GymPin. Add more weight than ever with our signature super-strong 10mm pin which enters the weight stack - make sure your machine is compatible. Designed to fit pin-loaded machines that use a 10mm pin.
Manufactured in the UK using the finest quality materials
4.7
176 ratings
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My son wanted it for his birthday and is happy with it. The company went out of their way to help with a shipping cost issue and I greatly appreciated that!
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Anonymous · September 12, 2026
Solid gympin, would recommend
It’s a pretty solid piece of equipment, to this point it hasn’t shown any major flaws, the only small flaws are that the pin itself does bend a little when under heavy load for a long time but not enough to be a problem and that the Kingpin isn’t as long as I hoped. In general I’d say it’s a good tool for overloading gym machines but it’s price might be a little too steep. In conclusion, I would recommend it for people who are willing to pay the high price.
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Anonymous · August 27, 2026
Am now able to add more weight for chest press machine(the only machine that has ever targeted my chest out of anything) and therefore increase chest size.
This was an incredible invention.