🏋️♀️ Unlock Next-Level Strength Without New Gear!
The FNKTEK Weight Stack Pin and Spring Collar is a premium steel accessory designed to extend your gym machine’s weight capacity by up to 130 pounds. Compatible with 8mm and 10mm pin diameters, it fits most cable towers and functional trainers, enabling smooth, safe, and precise weight adjustments. Perfect for home and commercial gyms, this durable extender lets you push past plateaus without investing in new equipment.
| Item Package Dimensions L x W x H | 13.19 x 2.95 x 2.95 inches |
| Package Weight | 0.83 Kilograms |
| Brand Name | FNKTEK |
| Warranty Description | 1 Year |
| Model Name | chaxiaogan-10-110 |
| Color | Black |
| Material | Metal |
| Suggested Users | unisex-adult |
| Manufacturer | FNKTEK |
| Included Components | Weight Stack Pin+Clip, Spring Collar |
| Size | Rod Dia:10mm Length:110mm |
M**Y
So good it got stolen!
My gym has your standard, run-of-the-mill, weight stack cable machines. A decent enough machine, but is limited to 10lb increments. Now, that’s fine, but sometimes you just want a little heavier… that fine control, ya know?So, I got this thing as a donation to this gym, and it was next level good. Talked to the local Personal Trainer and he swore by it!Come into the gym a few weeks later and couldn’t find it anywhere. I asked that same PT and he says it got lifted some time earlier.Made me sad. But, it’s a testament to how game changing this is- especially for folks who are serious about progressive overload on weight stack machines.Bought another and this one stays with me.
A**C
Great
I've had 60lbs on it. It holds up.
A**N
Get it now if you want to be stronger
Goes into stack. Holds weight. Pretty straight forward. I've added 90lbs with no issues.
C**A
Won’t hold up
Not durable. Unusable after less than one month of use. Only a 30 day return window.
C**E
Good but can bend with lots of weight
This weight stack pin works fine but I've marked it down because the small pin that inserts into the stack started to bend after a couple of months of use with two 45lb plates making the product a bit unsafe. I've now purchased a different brand to try.
G**D
This works great to add serious weight to your light stack.
This is great. I have a relatively light stack, and I needed to add 25 to 35 pounds for heavy back pulls. Feels like it is made from quality material and does the job. I wasn't sure about the pin size, so I got the smallest one and only needed to wrap a little bit of electrical tape around it so it fit more snugly. If you are a powerhouse and need to add serious weight to your puny stack, buy this right now and go pump your muscles you gurley man!
G**A
Despite me getting the largest pin, it falls right out
Despite me buying the longer/wider of the two pins, with only a 5 pound plate added, the entire assembly including the plate fell out on the first rep. Obviously, a heavier plate would only exacerbate that issue. Further, the collar provided barely fits and is a struggle to put on. I don’t have time to waste trying to shimmy a collar on in between sets.Immediate return.
I**2
Know the size!
First off, know the size of the holes of the machines you’re using. Simple google search helps, I learned Planet Fitness USUALLY has 8mm machines. This tool is perfect, low price and good quality! Can be too big/long for some machines so use common sense on where and what you’re trying to use it on.
Trustpilot
5 days ago
3 weeks ago
