Cable Stack Extender Explained
What does the Original 2" GymPin do?
The Original 2" GymPin is a cable stack extender that lets you add Olympic
weight plates to compatible selectorised or selectorized cable machines.
Choose an 8 mm or 10 mm small-end pin to match your machine, insert it into
the weight stack, then load 2" Olympic plates onto the larger sleeve to
continue progressive overload beyond the standard stack.
8 mm / 10 mm options
2" Olympic plates
Progressive overload
EXTEND YOUR CABLE MACHINE WITH THE ORIGINAL 2" GYMPIN
Add Olympic Plates to Your Weight Stack
The Original 2" GymPin is designed to help you add extra resistance to compatible selectorised cable machines once the standard weight stack is no longer enough.
Simply insert the GymPin into your chosen weight stack, load 2" Olympic weight plates onto the large end, and keep progressing without changing machine or compromising your exercise setup.
Built for lifters who want progressive overload, heavier cable rows, pulldowns, presses, curls and triceps work, it gives home gyms, PT studios and commercial facilities a simple way to increase cable machine resistance.
Designed and precision-manufactured in the UK for serious loading.
The Original GymPin
ADD OLYMPIC PLATES TO YOUR CABLE MACHINE
ADD OLYMPIC PLATES TO YOUR CABLE MACHINE
The Original 2" GymPin allows you to load 2" Olympic plates onto compatible cable machines. Keep progressing when the built-in weight stack is no longer enough.
How it works
1
MATCH YOUR MACHINE
Choose the correct 8 mm or 10 mm GymPin for your selectorised cable machine.
2
ADD TO THE STACK
Insert the GymPin into the weight stack just like a standard selector pin.
3
LOAD OLYMPIC PLATES
Add 2" Olympic plates and keep progressing when the standard stack runs out.
Product Information
The Original 2" GymPin is designed for lifters who want to add more resistance to compatible selectorised or selectorized cable machines once the standard weight stack is no longer enough.
Instead of being limited by the built-in stack, the GymPin allows you to load 2" Olympic weight plates directly onto the machine, giving you a simple way to increase resistance and continue progressing.
Designed and precision-manufactured in the UK, The Original GymPin is available with either an 8 mm or 10 mm small-end diameter, allowing you to match it to your machine’s existing selector pin size.
Simply check your machine’s pin diameter, insert the GymPin into the weight stack, load Olympic plates onto the large end, and train with added resistance.
The Original GymPin is built for lifters who have outgrown the standard weight stack on their cable machine and want a practical way to keep progressing.
It is suitable for serious home gym users, personal training studios, strength facilities and commercial gyms where compatible selectorised machines are used.
It is especially useful for exercises where progression can quickly be limited by the machine’s built-in stack, including pulldowns, rows, cable presses, cable curls, triceps work and other heavy cable-based movements.
Available in 8 mm and 10 mm options, The Original GymPin gives users the flexibility to choose the version that best matches their machine.
The Original GymPin was created to solve a simple but frustrating problem: many cable machines run out of usable resistance before the lifter runs out of strength.
For serious training, progression matters. Once the weight stack is maxed out, you either compromise the exercise or find a way to add more load. The GymPin gives you a cleaner, stronger and more practical option.
It was designed to allow 2" Olympic plates to be added directly to compatible selectorised machines, helping lifters keep pushing beyond the standard stack.
Made in the UK and built for repeated gym use, The Original GymPin reflects the core GymPin idea: simple equipment, serious loading, no unnecessary theatre.
The Original 2" GymPin is designed for compatible selectorised cable machines and allows 2" Olympic weight plates to be loaded onto the large end.
The large end measures 155 mm long × 49.5 mm diameter, making it suitable for standard Olympic plates with a 2" centre hole.
The small end measures 102 mm long and is available in either 8 mm or 10 mm diameters. You should measure your existing selector pin or weight stack hole before ordering to ensure the correct fit.
Available options include a single GymPin, a pair, or a mixed pair with one 8 mm and one 10 mm version.
Product weights are approximately 864 g for the 8 mm version and 897 g for the 10 mm version.
Always check compatibility before using The Original GymPin. Measure your machine’s existing stack pin diameter and confirm that the selected GymPin size is suitable for your machine.
Always confirm with the gym owner, facility manager or equipment manufacturer before using the GymPin on any machine that is not your own.
Do not overload the machine beyond its intended capacity. The GymPin adds external load to the weight stack, but the machine’s frame, cables, pulleys and guide rods still have their own limits.
Load plates evenly and securely. Check that the GymPin is fully inserted before use and that the added plates have enough clearance throughout the full range of movement.
Use controlled form, inspect equipment regularly, and stop immediately if anything feels unstable, obstructed or unsafe.
Product specifications
Product Type
Cable machine weight stack extender
Barbell Compatibility
Designed to fit standard 50mm Olympic barbell sleeves
Material
Precision-machined metal construction: aluminium and high-tensile steel
MAX LOAD
Maximum stated load: 60 kg. Do not slam the stack or exceed the intended capacity of the machine.
Small End Options
Available in 8 mm or 10 mm diameters
Weight
Approx. 864 g for 8 mm / 897 g for 10 mm
Use Case
Adds Olympic plates to compatible selectorised cable machines
Finish
RAW, Polished, Black, Pink or Red
Progression Type
Helps increase resistance beyond the standard weight stack
Carabiner
Choose to have your GymPin Belt Squat Collar shipped with or without a carabiner.
Plate Compatibility
Designed for 2" Olympic weight plates
Large End
155 mm long × 49.5 mm diameter
Small End Length
102 mm
Available Options
Single pin, pair, or mixed 8 mm and 10 mm pair
Quality Assured
Each GymPin is quality checked before dispatch
Included
1 x Original 2" GymPin, unless pair option is selected
Choose Your GymPin Finish
Choose the GymPin finish that suits your setup. Every finish delivers the same serious loading performance, with a different look, feel and presence on the gym floor.
Raw
Original, industrial and built to be used. A stripped-back machined finish for lifters who want the no-nonsense GymPin look.
Choose Raw
Polished
A brighter, cleaner metal finish with a sharper premium appearance while keeping the same serious loading function.
Choose Polished
Black
A stealth finish with a strong, understated look. Ideal for black racks, commercial gyms and serious training setups.
Choose Black
Pink
Bold, bright and easy to spot. Same GymPin performance with a louder finish and more personality.
Choose Pink
Red
GymPin red. Sharp, distinctive and built to stand out while matching the brand's signature colour.
Choose Red
The Original 2" GymPin lets you add Olympic weight plates to compatible selectorised cable machines, giving you a simple way to increase resistance beyond the machine’s standard weight stack.
The Original 2" GymPin is designed for compatible selectorised / selectorized cable machines that use an 8 mm or 10 mm selector pin. Measure your existing selector pin or weight stack hole before ordering to choose the correct size. Compatibility depends on pin diameter, stack hole size and available clearance around the machine. Refer to our size guide for more details and help.
Customers often look for cable stack extenders for machines from brands such as Life Fitness, Hammer Strength, Cybex, Technogym, Matrix and similar commercial gym equipment. Compatibility is not guaranteed by brand alone. The important measurement is the selector pin diameter and clearance around the weight stack.
Measure the diameter of your existing selector pin or the weight stack hole. Choose the 8mm GymPin for machines using an 8mm selector pin and the 10mm GymPin for machines using a 10mm selector pin. If you use different machines, the mixed pair gives you one of each.
The large end is designed for 2" Olympic weight plates. It measures approximately 49.5 mm in diameter, making it suitable for standard Olympic plate holes.
The amount of weight you can add depends on the GymPin product, the machine you are using,
the selector pin size, the weight stack design and the available clearance. The Original 2"
GymPin has a stated maximum load of 60 kg. Always load the machine sensibly, keep the plates
controlled and do not slam the stack.
No. The GymPin is designed to insert into a compatible weight stack in place of the standard selector pin, allowing you to load Olympic plates without permanently altering the machine.
Yes. The Original GymPin is available as an 8 mm, 10 mm, pair, or mixed pair option, depending on your machine setup.
Yes, provided the machine is compatible. The Original GymPin is suitable for home gyms, PT studios, strength facilities and commercial gym environments.
The Original GymPin is precision-manufactured from robust aluminium and high-tensile stainless steel, finished with a raw machined body and a branded resin GymPin end cap.
Always check compatibility before use. Do not overload the machine beyond its intended capacity, and confirm with the gym owner, facility manager or equipment manufacturer before using it on equipment that is not your own.
High-tensile Stainless Steel Pin
Repeated tests of materials enabled us to land upon this trusty stainless steel pin. Choose your Original GymPin in either 8mm or 10mm diameters, depending on the cable stack machine you are working with.
Hewn from a solid Aluminium Ingot
We seek the finest quality aluminium to deliver strict standards in both appearance and longevity.
Trusted GymPin Brand
Known for the quality of both manufacturing and design. Each GymPin is meticulously tested prior to dispatch.
Two Rings for Grip
Added grip with two perfectly machined rings.
Buy Two and Save
Train smarter with a matching pair
Build a stronger setup with two GymPins and save when you buy together. Choose matching sizes for the same machine, or select a mixed pair if your equipment uses different selector pin diameters. Ideal for lifters, home gyms, PT studios and facilities that want more loading options from their cable machines.
Customers praised this gym accessory as a "brilliant innovation" for progressive overload, allowing them to exceed weight machine limits. Reviews highlight "high quality milling" and durability. Some noted length limitations preventing use with certain machines or fitting enough plates. Concerns about shipping costs and tariff fees were mentioned.
S
SILVER
ordered the wrong size gym pin, hammer strength machines need a 10mm not 8mm pin. reached out on email and Berni was really helpful and helped me change my order. great service!!
A
Silver (Buy Two and Save)
They’re great! Only issue is paying the tariff but that’s out of my hands of course
Hi there! Thanks for your positive feedback. We understand tariffs can be an extra hassle, and we appreciate your patience. Glad you're happy with the product!
H
Beware fedex will charge you for the tarif.
After I received it fedex billed me $18 more to pay for tarif and tgey said it my obligation evev though the seller never mentioned it.
Niw im emailing fedex back and forth telling them that i already paid everything.
F
perfect
Thank you so much for the five star review!!!
F
this amazing! it fits my gym and is great material and quality, feels heavy and good to put lots of weight on, i hope gympin makes a kingpin version of this byt with the 8mm diameter because ive almost maxxed it out with this one too and cant put more plates on because its not long enough, i do understand if this wont work due to the small part not being able to hold that much if its just 8mm diameter, overall this is amazing i like it
Thank you, Fabrice. We really appreciate the great feedback and are glad the 8mm Original GymPin fits your gym setup so well.
It is brilliant to hear you’re getting strong use out of it already. We completely understand your point about wanting even more loading capacity, and yes, with an 8mm diameter there are practical limits to how much length and weight the smaller end can safely handle.
That said, we genuinely appreciate you sharing that insight. Feedback like this helps shape what we explore next. Thanks again for choosing GymPin and for taking the time to leave such a thoughtful review.
If you want it a touch more punchy and brand-led, I’d go with this version:
Thank you, Fabrice. We really appreciate the fantastic review and are pleased to hear the 8mm Original GymPin fits your gym well and feels as solid as expected.
It is great to know you’re already pushing its limits. We completely understand your comments about a longer 8mm version, though with the smaller diameter there are natural limits to how much load and length it can safely support. The GymPin KingPin will only ever be a 10mm pin!
We truly value the feedback, and we’re grateful you took the time to share your experience. Thank you for choosing GymPin.
K
Great product, used it on some leg extensions and made progression a lot easier and fed my ego while i was doing them cause i thought i looked pretty cool. The product is 100% worth the money, and the only reason i gave 4 stars is because shipping fees are kinda insane. Got it in under 5 a week though so thats a plus.
Brilliant to hear the product helped with your leg extensions and made progression easier. Looking cool while doing it is definitely a bonus. We completely understand the point on shipping fees too, especially on international orders, and we’re always looking for ways to improve that where we can. Glad it still arrived quickly and proved worth it.
M
RAW
Great product for increasing resistance on weight machines. It's become a staple in my workout routines!! Highly recommended.
Thanks for the great feedback, Mirkomarini! We’re really glad to hear the GymPin has become a staple in your workouts. Adding that extra resistance is exactly what it’s built for, and it’s great to know it’s helping push your training further. Appreciate the recommendation and thanks for being part of the GymPin community! 💪
T
Good stuff
Thanks for the 5 stars. Glad you’re enjoying the GymPin and putting it to work. Appreciate the support.
D
BLACK
Brilliant innovation that allows progression for added muscle adaptation beyond the constraints of a machines weight stack. This really does work wonders helping to re-energise stagnant workouts.
As always, the manufacturing and QC level is second to none.
David, thank you for the outstanding feedback and the 5 stars.
We designed the product specifically to break through the artificial ceiling of standard machine weight stacks, so it’s great to hear it’s helping drive progression and re-energise your training. That’s exactly the outcome we aim for.
We also truly appreciate your comments on manufacturing and QC. We put a lot of care into sourcing, machining and finishing here in the UK, so hearing that recognised means a great deal.
Thanks again for taking the time to share your experience. Train hard and keep progressing.
E
RAW
I purchased the raw 8mm original and started using it the day it got here. It's well made, allows me to add more weight to the machines, in different increments. All about progressive overload. The only reason I'm giving it 4/5 stars is because of the length (that's what she said). Unfortunately, I can't get it in some of the weight stacks because of the machine structure, or other machines it interferes with the levers of the machine. May have to invest in the MiniPin, also. Something to consider before one makes the purchase, especially here in the States because of the S/H costs, which drove the total up to $93. Otherwise, a great addition to my training arsenal.
Thanks for the detailed review — great to hear the 8 mm Original is already helping with progressive overload.
The note on length is a fair one. Some weight stacks have tighter clearances, which is exactly why we make the MiniPin for compact machines.
We understand the impact of US shipping costs and we’re working with carriers to improve rates. Thanks again for supporting a small, British-made product — enjoy loading up the stack
— The GymPin Team
E
Exactly what I ordered, grand product 🤞
A
beautiful
S
SILVER
Very high quality product designed as advertised. High quality milling and solid material that I feel will last a lifetime.
A
PINK
Holds decent weight and doesn’t wobble too much, meaning I’m confident in lifting with it in place.
Top gear!
L
Works amazing, extremely durable and super high quality product
B
SILVER
Great product, but….. GIMME THE 8MM KINGPIN ALREADY!!!!
B
SILVER
👌🏾
S
great easy to load with weight just a little short to fit enough plates
A
SILVER
Bought the 8mm because of my gym having Both 10mm and 8mm. Work just like it should nothing to complain about.
A
Exactly as advertised. Super quick service & delivery.
M
SILVER
Can't really say much other than it works pretty darn well. Looking forward to using it more often when I max out the machines at my gym lol. Maje sure you geothermal right size or you'll be disappointed.
G
SILVER
Limited by reaching the cable machine’s maximum was frustrating but the gym pin has enabled me to exceed the imposed limitations and achieve new levels
S
Amazing piece of kit
A
BLACK
Incredible product, already having people ask about it in the gym. Easy to carry in gym bag and even easier to added weight on to the stack
R
SILVER
Helping me use some great machines again that I had previously outgrown.
Built for progressive overload
Progressive overload is one of the simplest principles in strength training: to keep building muscle and strength, your training needs to keep challenging you over time.
That is easy when your cable machine still has enough weight on the stack. But once you reach the top plate, progression can become awkward. You either have to change the exercise, compromise the movement, or accept that the machine has become the limit.
The Original 2" GymPin helps solve that problem.
Designed for compatible selectorised cable machines, the Original GymPin lets you add 2" Olympic weight plates to the machine once the built-in stack is no longer enough. It gives lifters a simple way to keep progressing on cable rows, pulldowns, presses, curls, triceps work and other cable movements without needing to change the machine.
Available in both 8mm and 10mm options, the Original 2" GymPin is built to match common selector pin sizes and help you get more from the equipment you already use.
Instead of letting the stack decide when an exercise has run its course, the Original GymPin gives you extra loading room so you can keep the movement in your programme and continue building over time.
Want to understand how GymPins support muscle building and progressive overload?
IMportant Information
Everything you need to know
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Please note: International orders (outside the UK) are shipped excluding VAT, taxes, and import charges. Your order may be subject to VAT, customs duties, and handling fees upon arrival in the destination country.
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Shipping calculated during checkout and they originate from one of our distribution partners. Direct in the UK and or Amazon in other Territories.
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30 Days Returns - Subject to 15% Restock Fee - Check Diameters of Equipment you Require Prior to Purchase.
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