The Exponent Edge Infinity Arm is a product I’ve been wanting to test for a while.

With multiple arm angles, the ability to move the bracket up and down my rack, and 16 rotating pad angles, this has a TON of versatility.

And best of all, I can fold it down to take up very little space when I’m done using it.

Let’s check it out!

Unboxing

Table of Contents

When I received the package, the box was a bit banged up so I was a bit worried about the pieces inside.

Once I opened it up everything was bubble wrapped and I was happy to see nothing was damaged or scratched.

Here’s what came in the box: arm, pad, hardware, and a bracket.

The Infinity Arm is curved in the middle and feels solid.

It has a black steel finish with the Exponent Edge laser cut into it.

The pad feels soft but doesn’t sink so it provides the right amount of support.

It’s 12 1/4″ long by 8 1/2″ wide and 2″ thick.

Right below the pad there’s a half circle welded on with 16 outer holes that allow the pad to rotate in all directions.

And this is the hardware I’ll be using to connect the arm to the pad.

The bracket is 7 1/2″ deep by 7 7/8″ in height.

Now I’ll show you how to put it all together (there’s not much to it).

Assembly

The only assembly required is connecting the pad to the arm.

For this I just insert the bolt through the last hole in the arm and the center hole at the bottom of the semi-circle.

Everything else is modular and connected by removable pins.

Now all I have to do is screw the pull pin into the arm so that I’m able to adjust the pad angle.

Here’s what it looks like when it’s all set up.

And that’s all I had to assemble.

Specs

Bracket attachment: 7.5″ D x 7 7/8″ H

Pin size: Available with 5/8″ and 1″ squat rack hole diameter size

Rack compatibility: Fits 3″ x 3″ and 2″ x 3″ racks

Pad: 12 1/4″ L x 8.5″ W, 2″ thick

Arm + Pad: 25″ long (end of the pad to end of arm attachment)

Weight: 29 lbs

Weight Capacity: 600lbs

How To Use The Exponent Edge Infinity Arm

Rack Bracket

When you first see the rack bracket it might seem confusing cause there’s a ton of holes but I’ll make it easy to understand.

The four vertical holes are options to attach it to my weight rack.

The inside of the bracket is lined with UHMW plastic so I don’t have to worry about my weight rack getting scratched.

And as you can see, there’s holes on the front facing part of the bracket too.

So if your rack doesn’t have side holes, this can be mounted from front to back.

My rack has 5/8″ holes but Exponent Edge also has it available for racks with 1″ holes.

I can use hitch pins, magnetic pins, or band pegs as long as they’re 5/8″ in diameter.

The three vertical holes on the center of the bracket are anchor points for the arm.

This is where the Infinity Arm will pivot so I can move it up and down at different angles.

I usually go with the center hole since that gives me the most angle options but I can anchor it to the top or bottom center hole as well.

The rest of the holes on the bracket are locking points for the arm.

To lock the arm at a specific angle I just match a hole on the bracket with a hole in the arm and insert a pin through them.

Once I get the pin through the arm and bracket, it’s not going anywhere.

I like that I can use the arm in two ways: With the angle on the arm going down and…

I can flip the arm the other way to have the angle go up.

This gives me even more exercise options.

And finally, I can change the angle of the support pad by pulling the pin and rotating the pad.

This gives me 16 different angles to work with.

Now you can see why I said the Infinity Arm gives me a ton of versatility.

I can set the bracket at different heights, angle the arm in many ways, and rotate the pad for an infinite amount of options.

Exercises On The Infinity Arm

With garage gym equipment, versatility is HUGE because I get more bang for my buck and the Infinity Arm doesn’t dissapoint.

I can do a ton of exercises on the Infinity Arm and by no means are these the only ones possible.

These are just some of the common ones I do but I find new ones all the time.

Chest Supported

I’ll start off with spider curls.

This is one of my favorite ways to isolate the biceps so I don’t swing and feel more tension throughout the whole range of motion.

Next is a prone row using dumbbells.

I like chest supported rows because they’re friendly on my lower back.

Of course, I can also use the Infinity Arm as a seal row bench when I want to load up the bar and go heavier.

I do this with my Edge curl bar since it is cambered and I can pull my elbows further back.

This set up works well when I’m doing shoulders too.

Here I’m doing a Trap 3 raise to hit my lower trapezius.

For lateral raises, I tilt the pad at a slight angle and lean into it.

This small angle gives me enough support to prevent me from swinging the weights up and it feels better on my shoulders.

And here’s a leaning side lateral raise so I can feel my side deltoids firing more at the bottom of the exercise.

Back Supported

Doing hip thrusts on the Infinity Arm is something I hadn’t thought of until I saw someone doing them online.

This is better than using a weight bench because I know this isn’t going to move when I push against it.

I usually do hip thrusts with my Pivot Pad but this takes less time to set up since I don’t need a second barbell.

Here are some incline curls to hit the long head of the biceps.

Another exercise that makes it very hard to swing my arms and cheat when doing curls.

And I can even hit some chest with incline dumbbell chest presses.

This feels more challenging than using a bench since my core has to engage more with no low back support.

Arm Supported

I don’t own a preacher curl bench because they take up too much space for a single use machine.

And previously I’ve used the Preacher Pad or the Isolator but now I have another option with the Infinity Arm.

This way I can isolate each arm single handedly.

Leg Support

I’ve never been able to figure out a lap bar to hold me down when doing lat pulldowns on my PRx rack and this gets the job done.

The Infinity Arm has solves that problem with its rotating pad resting on my thighs.

Now I can crank up the resistance on my cable machine and not worry about coming off the weight bench.

Here I’m using the pad to support my leg while doing leg extensions.

For this one I set my Ancore Trainer all the way at the bottom of the rack and connected it to the OmniStrap.

This set up feels really good because I keep constant tension on my quads.

And here I’m using the pad to support my thigh while doing standing leg curls.

For this one I grabbed an adjustable dumbbell and hooked it to the OmniStrap.

Having my thigh pinned against the pad keeps me from swinging my leg and that makes the exercise harder.

And finally, I can use the pad to support my rear leg when doing Bulgarian Split Squats.

So those are just some exercises that can be done configuring the Infinity Arm in many ways.

I’m sure you can come up with others as play around with it.

Infinity Arm vs Other Rack Attachments

Out of all the chest support rack attachments I’ve seen, Exponent Edge’s Infinity Arm offers the most positions and angles.

I’ll show you a few of the other ones out there and their features.

Sorinex Bulldog Pad

The Sorinex Bulldog Pad’s arm can be adjusted in 4 angles but the pad is fixed.

It fits 3 x 3 racks with 1″ holes.

Rogue Pritchett Pad

Rogue’s Pritchett Pad has the least versatility and is the longest out of the attachments I’ve seen.

With a fixed arm and pad, this one is mainly for chest supported rows.

It fits 3 x 3 racks and has a built-in handle that mounts like a J-cup.

One problem I see with the Pritchett Pad is that I wouldn’t know where to store it once I’m done using it.

Revolt Fitness Chest Support

Revolt Fitness‘ chest support fits 2 x 2, 2 x 3, and 3 x 3 racks because it bolts to the front of the uprights (not the sides).

The arm has 4 adjustments and the pad is fixed.

I don’t like this one because if I wanted to change the height of the mount, I’d have to unscrew it every time and that would take long.

Bells of Steel Hydra Seal Row Pad

I like Bells of Steel’s Hydra Seal Row Pad because it’s beefy and attaches to any 3 x 3 rack just like a J-cup.

The arm has 7 angles of adjustment and the pad is fixed.

Darko Lifting Thresher Pad

Out of all these rack attachments, the Darko Lifting Thresher Pad is the only one that doesn’t come with an arm and bracket.

Instead, it attaches to a spotter arm (you must own one).

The Thresher pad fits 3 x 3 spotter arms with 1″ holes (pins are not included) and has 5 adjustable angles.

PRx Performance Axis Pad

PRx Performance’s Axis Pad is the one that comes closest to the versatility of the Infinity Arm.

The arm itself doesn’t adjust but the pad can be adjusted to 9 angles.

This fits 3 x 3 racks with 5/8″ holes and requires 4″ spacing for mounting.

Storage

Once I’m done using the Infinity Arm, I can either fold it down so it’s hanging from my upright.

Or I can take it down completely by pulling out the two pins from the bracket.

Pros & Cons

Pros

Versatility: I can use it for many upper and lower body exercises with all the configurations it has

Space saver: It’s rack attached so I can fold it down and leave it there without taking up garage gym floor space

Comfortable: Pad is firm but provides enough cushion

Build: Made out of metal so it’s durable

Easy to use: Magnetic pins make it easy to change arm angles and the pad rotates effortlessly with the pull pin

Back friendly: Chest supported rows reduce my chances of hurting my lower back

Cons

2 x 2 racks: Will not work with 2 x 2 racks

Pad width: I can do a lot with the current pad, but I’d like to see the pad be a bit wider to have a little bit more room

Exponent Edge Discount Code

Exponent Edge currently sells the Infinity Arm for $299…

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