Strength Equipment

Essential Functional Trainer/Smith Machine Combo (Back to Back)

Technical Specs

Essential Strength Functional Trainer/Smith Machine Combo (Back to Back)

Style # ES-8504YR

Commercial-Grade Frame Construction:
Main frame: 3.94″ × 1.97″ × 0.12″ flat oval steel tubing
All structural components utilize high-quality Q235 steel

Dual Training System:
Integrated Smith Machine system for guided barbell training
Functional trainer system for cable-based strength and accessory
exercises
Designed to support full-body training versatility in one unit

Weight Stack System:
2 × 150lb independent weight stacks for balanced cable resistance
training

Heavy-Duty Hardware:
0.31″ thick stainless steel hook plates ensure secure and reliable bar
racking
High-strength bolt connections (Grade 10.8) enhance overall structural
integrity and stability

Stable & Durable Build:
Engineered for continuous commercial use with smooth operation and
long-term durability

Net Weight: 887lbs
Gross Weight: 1,047lbs
Footprint (L × W × H): 39.4″ × 92.9″ × 90.6″
Weight Stacks: 2 x

Description

The Essential Functional Trainer/Smith Machine Combo (Back to Back) is a selectorized strength machine that isolates and strengthens the target muscle group with a guided, joint-friendly range of motion.

Key Features

Heavy-duty steel frame and cable/pulley system built for daily commercial use
Adjustable seat and/or pad positions to fit a range of user sizes
Clear instructional placards illustrate correct setup and form
Weight-stack or plate-loaded resistance for smooth, controlled loading
Ergonomic pivot points designed to track natural joint movement

Frequently Asked Questions

Q: What muscle group does the Essential Functional Trainer/Smith Machine Combo (Back to Back) target?
The Essential Functional Trainer/Smith Machine Combo (Back to Back) is designed to isolate and strengthen the specific muscle group named in its title, using a guided path of motion for safer, more consistent loading.

Q: Is the Essential Functional Trainer/Smith Machine Combo (Back to Back) suitable for a commercial facility?
Yes, the Essential Functional Trainer/Smith Machine Combo (Back to Back) is built with a heavy-duty frame and durable cable and pulley system so it can withstand daily use in gyms, clinics, and training facilities.

Warranty

Please refer to our Warranty page.

Product Sheet

Essential 4 Stack Multi-Gym

Essential Power Smith Multi-Bench Press

Essential 3-D Hip Thrust

Essential Smith Machine/Counterbalanced

power your gym with the best

“ProMaxima has provided top-quality equipment for our weight room, along with outstanding installation and service. Their equipment is comparable to or exceeds the quality of more expensive products, and the service has been exceptional.”

Randall Hugg

“From day 1 our student athletes have benefited from PMX Equipment – we are seeing results on the field and on the courts.”

John Hoye, High School Director of Athletics

“PMX strength equipment has set our department up for success because of how durable, flexible, and adjustable it is depending on what season and athletes we need to train.”

Dr. Andris Dikmanis, Director of Strength & Conditioning

RUSTY NAIL

20 days ago

Our racks we ordered to supplement our weightroom that was done by Promaxima many years ago are top notch, well designed and will serve our student-athletes well! Gary and the team did a fantastic job keeping me updated along the way and delivery and set up was done in one afternoon! Highly recommend Promaxima for your weight room needs!

Josh Haaland

21 days ago

We have utilized Promaxima within our school district for multiple years. They have helped us completely revamp our weight room, create a much more conducive environment to our students' successes, and helped raise our culture and desire to be in the weight room with their quality products. Their communication when we needed assistance was top notch as well.

mira srz

81 days ago

Thank PMX for a wonderful experience. The PMX staff is awesome and the delivery team was amazing. They were so positive and simply happy to be here. Great attitude! My whole experience w PMX has been wonderful. We love our treadmills! Thank you again PMX!!

Kelsey Williams

109 days ago

James Evans

136 days ago

We been using Promaxima equipment in our gym(s) for the past 20 years. The equipment is strong and sturdy. The employees are easy too communicate with. We will always use their equipment.

Sandra Arriola

146 days ago

ProMaxima has exceptional customer service. I received a call from Gary a few days prior to my delivery to walk me through the process of delivery and set up and then I received a phone call after set up to make sure everything went according to plan. Delivery went smoothly and the two technicians that delivered and set up the racks and benches worked very efficiently to get the job done on time.

Jared Sloan

158 days ago

Quality product and a solid price! GREAT equipment.

Eric Lopez

181 days ago

We’ve spent well over $12,000 on equipment with your company, including our most recent purchase—a cable machine that came with delivery and installation. Not long after using it, we noticed a constant knocking and an uneven pull. When we removed the plastic cover, it was obvious the cable had been installed incorrectly. I contacted customer service and was told no one could assist us for another four months due to our location. While I understand we’re not nearby, we paid for proper installation, and this situation makes that hard to justify. I even offered to handle the repair myself if you could just send the necessary parts, since the machine hasn’t been usable as intended. It’s now been nearly a month, and we still haven’t received any help or follow-up. This has been frustrating and disappointing, especially given the amount we’ve invested. They were quick to take the money but won’t help. Update 5/6/2026 Sterling reached out to me and explained what the issue was and that this problem was an anomaly and he would fix the issue. He heard my complaint and offered a solution. He figured out what went wrong and fixed the order request with the correct parts. Our parts are on the way to us and hopefully it’s gets here soon. Update 5/12/2026 Sterling sent the parts, and we installed them. During the repair, we did find other issues, but we fixed them. Seems the initial install was done wrong. Thanks to Sterling, we got the machine working well. We have other Promaxima equipment, and they have all been great. We hope this is an isolated incident because we still plan to order more equipment, just because it's good equipment. Hopefully the higher ups recognize Sterlings great customer service because he did a great job compared the first person who didn’t help us.

Jesse Reyes

207 days ago

I have had great experiences with this equipment. Able to handle heavy loads and remain stable. Would highly recommend for anyone, new or experienced.

Josh Sanchez

10/10 equipment!!!

Essential Functional Trainer/Smith Machine Combo (Back to Back)

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Strength Equipment

Essential Functional Trainer/Smith Machine Combo (Back to Back)

Essential Functional Trainer/Smith Machine Combo (Back to Back)

Technical Specs

Description

Key Features

Frequently Asked Questions

Warranty

Product Sheet

Related Products

Essential 4 Stack Multi-Gym

Essential Power Smith Multi-Bench Press

Essential 3-D Hip Thrust

Essential Smith Machine/Counterbalanced

power your gym with the best

Randall Hugg

John Hoye, High School Director of Athletics

Dr. Andris Dikmanis, Director of Strength & Conditioning

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