Micro Gainz GymPin Weight Stack Extender Pin - Add Olympic Plates

In this review the Micro Gainz GymPin emerges as a focused solution for lifters who need a few extra pounds on a cable machine without modifying equipment. It is aimed at home gym users and strength trainees who want to add one Olympic plate to the side of a weight stack; the single biggest reason to buy is its simple, stackable design that lets the selector pin remain in use underneath the extender so machines keep their built-in safety. The GymPin is not a complex gadget but a purposeful accessory for incremental loading and workout progression.

Key Features

• Stackable Gains: Lets you add an extra Olympic plate to the side of a cable machine weight stack so you can increase load in small, meaningful steps.
• Olympic Plate Compatibility: Designed for 2 Olympic plates with a 2 in (50.8mm) center hole so standard Olympic plates fit as intended.
• Compact Aluminum Body: The 3-1/8 in aluminum loading body provides a low-profile mount for plates without excessive overhang or interference.
• Case-Hardened Steel Pin: Made from solid steel and case-hardened for durability where the pin slides into the stack, improving long-term wear resistance.
• Pin Size Options: Available in 5/16 in or 3/8 in diameters so you can match the GymPin to your machine's cable stack pin diameter for a secure fit.
• Selector Pin Guidance: Intended to be used with the machine's selector pin placed underneath the GymPin to retain normal selector function and safety.

Who It's For

The Micro Gainz GymPin is best for home gym owners and casual to intermediate strength trainees who use plate-loaded cable machines and want to add a single Olympic plate for small, consistent progression. It fits users who already measure their machine pin diameter and own compatible Olympic plates.

It is not ideal for commercial gyms with heavy daily cycling or users who expect to add very large amounts of off-stack weight, since the GymPin is designed to accept up to one 45 lb plate depending on plate thickness and is intended as an extender rather than a full retrofit. Those concerned about exact fit or weight stability should confirm dimensions before purchase.

Pros & Cons

Pros

• Simple and effective way to add incremental weight to a cable stack without machine modification.
• Durable construction with a case-hardened steel pin and aluminum loading body for practical longevity.
• Available in common pin diameters so you can match it to your machine for a secure installation.

Cons

• Fit and perceived value vary by user; measuring the stack pin diameter is essential to avoid incompatibility.
• Some users report occasional weight stability concerns depending on plate thickness and machine design.

Specifications

Our Verdict

The Micro Gainz GymPin is a practical, well built accessory for lifters who need modest additional load on cable machines. It delivers the core benefit of adding an Olympic plate while preserving selector pin function, and its durable materials make it a sensible buy for home use. Confirm the stack pin diameter and plate thickness for the best value, and this extender will serve progressive training without fuss.

Frequently Asked Questions

Will this fit my cable machine?
Measure your cable stack pin diameter and choose the GymPin in 5/16 in or 3/8 in to match the machine for proper fit.

How many plates can it hold?
The GymPin is designed for up to two Olympic plates at the mounting but commonly used to add one 45 lb plate depending on plate thickness.

Do I remove the selector pin?
No, the selector pin should be slotted underneath the GymPin so the machine retains normal selector operation and safety.