Micro Gainz GymPin (3" Length)

Name: Micro Gainz GymPin (3" Length)
Brand: Micro Gainz
Rating: 5.0 (4 reviews)

A machined weight-stack extender pin built to close the gap between the large 10-15 lb increments most selectorized and cable machines jump in. It slides into the machine’s existing loading pin and lets you hang a standard 2” Olympic plate off the side of the stack, so instead of jumping straight to the next full plate you can add 2.5, 5, or another small increment for genuine progressive overload. The body is machined aluminum and the insertable pin portion is case-hardened solid steel, made in Pennsylvania, USA, and it’s offered in 5/16” and 3/8” pin diameters to match different machines’ loading-pin holes. It can support up to one 45 lb Olympic plate depending on plate thickness, though most owners use it for smaller in-between jumps rather than maxing it out. The main real-world caveat from hands-on use: on stack machines whose loading-pin hole isn’t drilled all the way through, the pin doesn’t seat fully flush, leaving a small gap that some owners work around with a magnetic collar rather than trimming the pin.

Type	Weight-stack extender / loading pin
Weight	Approximately 1 lb 1 oz
Pin material	Case-hardened solid steel
Manufacturing	Made in Pennsylvania, USA
Overall length	Approximately 7-1/4"
Pin body length	3-1/8"
Pin body material	Machined aluminum
Max plate capacity	Up to one 45 lb Olympic plate (depending on thickness)
Plate compatibility	2" Olympic plates (2"/50.8mm center hole)
Pin diameter options	5/16" (8mm) or 3/8" (10mm)

What is a Cable Attachment?

What cable attachments are

Cable attachments are the handles and bars that clip to a cable machine, functional trainer, or lat/row station to change the exercise — lat bars, triceps ropes, single-D handles, row/close-grip handles, ankle straps, and more. A small set of them turns one cable stack into dozens of movements.

What to look for

A rotating swivel or ball-bearing joint keeps the cable from twisting and lets the handle track your arm; comfortable, durable grips (knurled metal, rubber, or coated nylon) survive heavy use; and a standard carabiner or snap fits most machines. Match the attachment to the exercises you actually train rather than buying a giant kit you won’t use.

How it compares

	Micro Gainz GymPin (3" Length)	Handle Straps	Keehui Swivel Snap Shackle	CG-1B Crossbow Cable Attachment
GymRadar rating	5.0/5	5.0/5	5.0/5	5.0/5
Price	$74.99			$110.00
Type	Weight-stack extender / loading pin		Jaw swivel snap shackle
Weight	Approximately 1 lb 1 oz		0.3 lb (per the manufacturer's 2-3/4 in size)
Pin material	Case-hardened solid steel
Manufacturing	Made in Pennsylvania, USA
Overall length	Approximately 7-1/4"
Pin body length	3-1/8"
Pin body material	Machined aluminum
Max plate capacity	Up to one 45 lb Olympic plate (depending on thickness)
Plate compatibility	2" Olympic plates (2"/50.8mm center hole)
Pin diameter options	5/16" (8mm) or 3/8" (10mm)

5.0/5 · 4 GymRadar reviews

Reviews by source

Expert	5.0/5	4 reviews
Youtube	4.0/5	1 reviews

The GymPin solves a real problem on stack-loaded cable and selectorized machines: most jump 10-15 lb per plate, and this pin lets you add a 2” Olympic plate to the side of the stack to bridge that gap down to increments as small as 2.5-6 lb. Functionality is the standout – a hands-on owner review confirms it does exactly that on a real machine, and the manufacturer’s machined-aluminum body with a case-hardened steel pin backs up the build quality independent coverage praises. The one real caveat, from that same review, is fit: on stacks whose loading-pin hole isn’t drilled all the way through, the GymPin doesn’t seat flush and needs a magnetic collar (or trimming) to stop it rattling – worth checking your machine’s pin hole before buying. Durability is the weakest-covered dimension – independent coverage is thin (one video, one review-site writeup, and a small 4-review GymRadar sample), so there’s little long-term wear data to draw on.

+Functionality: bridges large 10-15 lb stack-machine jumps down to 2.5-6 lb increments by adding a 2" Olympic plate to the side of the stack (manufacturer page; YouTube: Nick DiLeo)
+Build quality: machined-aluminum body with a case-hardened solid-steel pin, made in Pennsylvania -- described as a "nice unit" out of the box (manufacturer page; YouTube: Nick DiLeo)
+Versatility: works with any standard 2" Olympic plate and supports up to a 45 lb plate depending on thickness, with 5/16" and 3/8" pin-diameter options to match different machines (manufacturer page; strengthproductreviews.com)
+Functionality: hands-on owner review calls it "worth buying" for its intended incremental-loading purpose (YouTube: Nick DiLeo)

−Functionality: doesn't seat flush on stacks whose loading-pin hole isn't drilled all the way through, leaving a gap that needs a magnetic-collar workaround and can rattle against the stack unless parked in the machine's top slot (YouTube: Nick DiLeo)
−Durability: no long-term wear reports surfaced -- available coverage is limited to a first-use review-site writeup and a single video
−Value: no community/forum discussion turned up during research, so pricing perception rests mainly on two vendor-adjacent review sources plus a small 4-review GymRadar sample

$74.99

Buy Now