Plate Loaded Leg Extension & Curl Machine | Dual Function – Gronk Fitness

The Gronk Fitness Plate Loaded Leg Extension & Curl Machine is a dual function leg machine for home gyms. Switch quickly between leg extensions and seated leg curls to train quads and hamstrings in one compact, commercial grade unit built to Gronk standards (and yes, Rob Gronkowski trains legs too).

Why This Machine Belongs In Your Home Gym

Most commercial gyms dedicate two separate machines for Leg Extensions (for quads) and Seated Curls (for hamstrings). Now, you can perform both exercises on one piece of equipment, without sacrificing space or quality.

The Gronk Fitness Plate Loaded Leg Extension & Curl Machine gives you both in one compact design. You’ll be able to:

Build bigger, stronger quads with controlled extensions that isolate your thigh muscles.
Strengthen your hamstrings for power and stability with seated curls that protect knees and improve athletic performance.
Do it all at home, without needing two bulky machines eating up your space. Or, needing to commute to the gym.

It’s about more than just saving room. It’s about giving you the ability to perform the most effective lower body exercises with proper form, right in your own home gym.

Dual Function: Leg Extensions & Seated Leg Curls

Leg Extensions for Quad Strength & Knee Health

This movement isolates the quadriceps like no squat or lunge can. That isolation builds definition, adds size, and strengthens the muscles that stabilize your knees. With this machine, your quads get the focused work they need, without straining your hips or back.

Seated Leg Curls for Hamstring Power & Balance

A strong set of hamstrings means more speed, better athletic performance, and lower risk of injury. A seated leg curl machine stretches the hamstrings under load, which research shows is one of the most effective ways to build muscle. This machine lets you transition into curls in seconds, so you can train quads and hamstrings back-to-back for complete leg development.

Why Dual Function Matters

Buying two machines, or trying to replicate these movements with bands or makeshift setups just isn’t the same. With dual function design, you save space, save time, and train smarter. One machine does the work of two, giving you a pro setup without turning your garage or basement into a commercial gym.

Plate Loaded: Built for Lifters Who Progress

Progressively Overload Your Strength

Unlike selectorized machines that max out quickly, plate loaded resistance allows for progressive overload as you get stronger. Load up standard Olympic plates and push your limits just like you would at a commercial gym.

Feels more natural than cables or bands, with resistance that transfers to real lifts like squats and deadlifts.
Built with heavy-duty steel and smooth rollers. No fragile pulleys or cables
.Designed for serious lifters, but simple enough for beginners to use safely.

Keeps Training Real

Plate loaded resistance feels more like free weights, which means your strength on this machine transfers better to squats, deadlifts, and sports performance. It’s not a lesser “home version” it’s designed to handle serious training.

Simple. Reliable. Long-Term.

No pulleys, no cables, no stacks to jam. Just steel, rollers, and your plates. That simplicity makes it ultra-reliable, low-maintenance, and ready for years of use.

Key Features

Premium Upholstery with contoured padding for comfort under heavy sets.
Oversized Rollers (6” x 17”) for even pressure and stable movement.
23 Pin-Lock Adjustments for custom fit and range of motion.
10” Olympic Sleeve holds up to ~180 lb of Olympic plates.
Transport Wheels for easy mobility in your home gym.
11-Gauge Steel Frame built for long-term durability.

Benefits

Train quads & hamstrings with the two best isolation exercises.
Save space by replacing two commercial machines with one compact unit.
Train smarter with fast exercise transitions and adjustable setups.
Commercial-grade build for both general fitness buyers and serious lifters.
Trusted by Rob Gronkowski, built to pro standards for peak performance.

Specifications

Length	45"
Width	45"
Height	45"
Assembled Weight	170 lbs
Rollers	6" Diameter, 17" Long
Seat	6 Adjustments, 19" Width
Olympic Sleeve	10" Long - Fits up to 4x45lb plates = 180lbs max
Transport Wheels	Included
Steel	11-Gauge Steel

FAQ

Is this machine plate loaded or selectorized?
This machine is plate loaded. You can use Olympic weight plates for smooth resistance and progressive overload.

Will it fit in my home gym?
Yes. With a compact 45” × 45” × 45” footprint and built-in transport wheels, it’s ideal for garages, basements, or dedicated training spaces.

What muscles does this leg extension & curl machine train?
Leg extensions isolate the quadriceps, while seated leg curls target the hamstrings. Together they provide a complete lower body workout in one machine.

How do I perform both exercises on this dual function machine?
For leg extensions, place your ankles under the rollers and extend your legs to isolate the quads. For seated leg curls, adjust the pads, anchor your thighs, and curl the lower roller back to hit the hamstrings. Switching exercises takes just seconds.

What is the maximum load capacity?
The 10” Olympic sleeve holds up to four 45 lb plates, giving you about 180 lb of resistance.

What’s Included

Gronk Fitness Plate Loaded Leg Extension & Curl Machine
Built-in transport wheels
Plates sold separately

Click Here to View the Assembly Manual

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