Leg Extension Curl Machine: BodyKore MTI4005 3-Station Multi-Gym
Who this leg extension curl machine fits
If you want a leg extension/curl machine that feels stable and commercial—without filling your floor plan with separate units—the BodyKore MTI4005 combines a dedicated leg extension/curl station with a seated leg press inside a 3-station multi-gym.
It’s commercial grade, rated to hold over 1000 lbs, and built on an 11-gauge steel frame for long-term structural integrity.
Leg extension curl machine problem solved
This system is for lifters, trainers, and facilities that care about consistency: the same setup, the same movement path, and clean progression you can track week to week.
Lower-body coverage comes from three complementary patterns:
- Knee extension (quadriceps focus)
- Knee flexion (hamstrings focus)
- Leg press (compound load for mass and strength)
Real-world proof: how teams use it
Answer: It’s built for rotation and repeatable coaching cues.
In a busy setting, three users can cycle efficiently: one presses, one curls, and one works extensions—then they rotate on a timer. Because each station is equipped with a 220 lb weight stack and the cable attachment used in that station, you don’t lose time “building” a setup between clients.
Home-gym owners use it the same way: press first, isolate second, and finish with controlled high-rep curls for a clean pump without beating up joints.
Features
How the MTI4005 stations flow
The MTI4005 is full-body equipment, but the leg stations are the headline when your search is “leg extension curl machine.”
Leg Extension/Curl Station (quads + hamstrings)
Answer: You can isolate weak links and build symmetry.
Open-chain knee extension is widely used to rebuild quadriceps strength in performance and rehab settings, often with careful ROM choices when needed.
For curls, treat the eccentric like training—“resist it up”—to build hamstrings that support knee stability.
Seated Leg Press (heavy compound strength)
Answer: This is your high-load driver.
Keep a braced torso, controlled depth, and consistent foot placement to target quads, glutes, and adductors without turning the set into a lower-back grind.
Set up cues for clean knee mechanics
Answer: Align first, then load.
30-second alignment checklist:
- The knee lines up with the machine’s pivot
- The pad sits above the ankle (not on it)
- Hips stay down; no seat “pop.”
- Reps look identical start to finish
If you have to swing, shorten the range, or slam the stack, the load is too high. Near terminal extension, quadriceps forces can rise sharply, so control matters.
Programming for strength and size
Answer: Press heavily, isolate precisely.
- Strength day: Leg press 4–6×4–6; extensions/curls 3–4×6–10
- Size day: Leg press 3–5×6–12; extensions/curls 3–5×8–15
- Finisher: 1 slow curl set of 15–20 (no cheating)
Progress one variable at a time (load, reps, or tempo). That keeps results measurable.
Build details that prevent drift
Answer: Small hardware choices reduce slip and downtime.
- Grip retained with aluminum collars, preventing slip
- Standard rubber feet protect the base and reduce movement
- Adjustable pulley station with side handles for stability
- Fixed triceps extension station with side handles and back cushion
Specifications and warranty
Answer: These are the published planning numbers (no guesswork).
- Dimensions: 105” x
- Weight: 2108 lbs
- Weight Stack: 220 lbs * 5; upgradeable to 340 lbs.
- Stations: lat pulldown/chest press, leg extension/curl, seated leg press
- Availability: Special Order only
Documentation for teams and installers:
- Manuals 3 Station Multi-Gym (Chest/Back, Leg Extension, Leg Press) - MTI4005
- Data Sheets 3-Station Multi-Gym MTI4005
Strength Warranty (North America Only)
Answer: Coverage is strongest where wear matters most.
- Frame (Not Coatings): Lifetime
- Weight Stacks: 10 Years
- Pulleys: 10 Years
- Pivot Bearings: 10 Years
- Other Items Not Specified: 3 Years
- Upholstery/Cables/Springs/Grips: 1 Year
- Accessories: 6 Months
Key features at a glance
Answer: Daily-use upgrades that keep training smooth.
✅ 11-gauge commercial steel frame
✅ Rated to hold 1000+ lbs
✅ Dedicated leg extension/curl station
✅ Seated leg press station included
✅ 3-station full-body workflow
✅ 220 lb stacks included per station
✅ Stacks upgradeable to 340 lbs
✅ Aluminum collars help prevent slip
✅ Rubber feet protect flooring
✅ Pulley station w/ side handles
Is this a true leg extension curl machine or a compromise?
It’s a dedicated leg extension/curl station inside a multi-gym, plus a leg press for heavy work—so your leg program stays complete.
What muscles does it hit the most?
Quads (knee extension), hamstrings (knee flexion), and glutes/adductors on the press.
How do I keep knee extensions knee-friendly?
Align the pivot, control the eccentric, and avoid bouncing into lockout. If you’re rehabbing, follow clinician ROM guidance.
Is it suitable for home gyms?
Yes—if you plan for the footprint and weight. Many buyers choose it because it replaces multiple separate machines.
Next step: request pricing
If you’re shopping for a leg extension curl machine that feels commercial and supports advanced programming, the MTI4005 belongs on your short list. Special-order timelines vary—secure your place early. For Tennessee-based support and nationwide shipping guidance, explore curated options at Hamilton Home Fitness.
