Parcel ground shipping
Items weighing 149 lb or less ship by ground parcel rather than freight.
Receive by Dec 10estimated, may change
New
BUILT Strength ‘OG’ Series Plate Loaded Seated Leg Extension / Leg Curl
$1,395.00
4.8
ConditionNew
Availability
Available to Order
Pay over timeBusiness financing
Business financing from $…/mo*
*Estimate, subject to credit approval.
Parts & Labor, Plus Lifetime Frame
New equipment. Coverage starts on the date of delivery.
Shipping calculator
Enter your state and ZIP code to see delivery options and prices.
Machine overview
Condition: New
Warranty: 1 Year Parts & Labor (Extended Available)
Returns: 30-Day Returns & Exchanges
Shipping: Driveway Delivery, or Inside Delivery & Assembly
Receive by: Dec 10
How It Ships: Crated w/ Assembly Manual
Delivery options
How delivery works
Your item’s shipping method and price are confirmed in the shipping calculator and at checkout. Here is what each delivery path means.
Driveway freight delivery
Your equipment is palletized and protected. The freight carrier schedules delivery, then uses a liftgate to lower it to your curb or driveway. Moving it inside and unpacking it are up to you.
Inside delivery & assembly
When selected and available for your address, the delivery team brings the equipment into the room, assembles and tests it, then removes the packaging.
Full truckload
For commercial builds and multi-pallet orders, a dedicated trailer keeps the full order together in one delivery. We confirm the unloading plan before the truck ships.
Size: 48" × 55" × 45" tall
What New Means
Brand new, current-model equipment shipped in the factory crate with the full manufacturer warranty. Extended coverage is available at checkout.
Warranty Coverage
New and remanufactured equipment are both covered for one year, parts and labor, backed by us. Extended protection is available on either through BAG Care+. Used equipment is sold as-is with no warranty coverage, and is described honestly before you buy. We service nationwide - every ZIP code in the country - so coverage travels with the machine.
30-Day Returns & Exchanges
Change your mind within 30 days of delivery and you can return the machine or exchange it for a different size, color or configuration.
Return shipping is the customer's responsibility and a 15% restocking fee applies to preference returns and exchanges. Freight items must go back packaged to the same standard they arrived in. We will tell you exactly what that means before anything is collected.
Anything that arrives damaged or fails under warranty is handled separately and carries no restocking fee. Full terms are in our Returns, Exchange & Refund Policy.
Add before it ships
Before the freight bookingCoverage and accessories have to go on the same booking as the machine. Add them here and they travel together.
Extended warrantyRecommendedEvery machine includes 1 year parts and labor.
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Customer reviews
Real Gyms. Real People.
See why gym owners and home gym builders trust Build A Gym with their gyms.
4.8
★★★★★
277 reviews on Google
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a month ago
★★★★★
Great communication, products, and I'm very happy with what I purchased from them. I will be back!
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a month ago
★★★★★
Just want to say thank you to the team at CTX!! Not only was shipping fast and efficient, but customer service was outstanding!! Any question that was needed to be answered was meet with a quick response. Thank you again!!
Read on Google -
a month ago
★★★★★
Dillon was very helpful, patient with answering all my questions, very knowledgeable. He insured I had all the necessary answers before I made my purchase. Thanks Dillon, great customer service!
Read on Google -
2 months ago
★★★★★
I was thinking about getting Ozempic, but I’m not in the mood to go blind yet. So I decided I’d do it the old fashioned way and called CTX.
Read on Google -
2 months ago
★★★★★
CTX Built is a great company to work with. Excellent communication and customer service. Their team was easy to work with and extremely helpful. Would do more business with them and I plan to.
Read on Google -
2 months ago
★★★★★
CTX stands by their products. I recently purchased a Precor elliptical from them & it arrived with a mechanical flaw. They coordinated with a technician to get my product fixed like new. They accomplished this despite the fact that my home was two states away. Special thank you to Nichole for staying accessible and attentive throughout the process!
Read on Google -
2 months ago
★★★★★
Great product and awesome leadership. Equipment was straight forward to build and team is always responsive when needing information or any help whatsoever. So glad I found them for outfitting my gym, best decision I have ever made for my business!
Read on Google -
2 months ago
★★★★★
Absolutely best in business! Not only is Dillon just genuinely a great human being, he’s real and honest. Loved everything I’ve gotten from him and the team. I’m about 10-15 pieces in deep with him and not stopping anytime soon! Absolutely recommend hitting these guys up for home/commercial equipment. New or refurbished!
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4 months ago
★★★★★
Excellent selection of products with a large selection, consultants will help you decide
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4 months ago
★★★★★
Dillion was great to work with!! Super friendly, quick turn around time, and great at communicating! The guys who delivered it Robb and JJ were also amazing. They came prepared and were very fast and efficient. They offered to help us move around other equipment to ensure we loved our gym! Super nice people and an amazing company! I would highly recommend working with them. Oh and the equipment itself is high quality and looks great in our home gym!
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5 months ago
★★★★★
I inquired to sell a few machines from my personal training studio. From beginning to the end, customer service was great! CTX was very quick with responses and communication was there! I very much will take my business back to CTX, and I highly recommend them.
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5 months ago
★★★★★
Bought this refurbished Matrix Stair mill and from the minute I mesaged about it they offered great communication and shipping was perfectly coordinated! Highly recommend this CTX Gym
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5 months ago
★★★★★
We purchased a Woodway treadmill from CTX Home Gyms and had a warranty issue a few months later. Dylan and his team were quick to respond, communicated throughout the process, and got everything resolved right away. Great customer service — highly recommend this company.
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5 months ago
★★★★★
I can’t say enough great things about CTX Home Gyms. They did an incredible job on both my commercial gym and my home gym setup. The entire process was seamless from beginning to end — professional communication, top-quality equipment, attention to detail, and outstanding customer service.
Read on Google
They truly know fitness equipment and how to create a space that looks amazing and functions at a high level. Whether you’re building a home gym or a full commercial facility, I highly recommend CTX Home Gyms. They made the entire experience easy, stress-free, and exceeded every expectation. -
5 months ago
★★★★★
Dillon and his team outfitted my entire new gym. We worked together from the beginning stages. They had the same exact vision I had. They did everything possible to make our dream gym. And they did!!
Read on Google
The entire experience was amazing. I literally told them what I wanted and they made it even better. The Build line is amazing. I get compliments on it daily. From the stitching on the equipment to how smooth it is. I can not say enough good things about it. And the plate loaded build equipment is legit. I’m an equipment snob. I love finding the old pieces. But this stuff is even better. Pure quality and can stand some big weights!
We plan on opening a couple more gyms, and we are definitely usi -
6 months ago
★★★★★
Great company, Excellent Attention to Detail, Very Good Customer Service & the Price is Right!!!
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Our own equipment line
What BUILT Strength is
Commercial-grade gear we design, stock and stand behind, sold only through Build A Gym.
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Heavy commercial steel
Frames are laser-cut and welded from heavy-gauge steel, built for daily commercial use.
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We audit the factory’s work
Our team audits the factory regularly, checking machines, welds and finishes before they ship to Texas.
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Stocked in Texas
Most of the range ships from our Jarrell, TX warehouse. Try it first at our Georgetown showroom.
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Delivered and backed for life
1 year parts and labor plus lifetime frame coverage. Add inside delivery and assembly at checkout.
Product details
Commercial-grade equipment, inspected and supported by warranty.
Quick answer: A leg extension leg curl machine trains the quads (extension) and hamstrings (seated curl) on one frame, so you get two lower-body isolation stations in a single footprint. The BUILT Strength OG Series version is plate loaded, switches movements with a tool-free pop-pin, and starts at 20 lb with no stack ceiling.
The BUILT Strength OG Series Plate Loaded Leg Extension / Seated Leg Curl switches between quad isolation and hamstring development via a quick-change pop-pin selector - no tools, no significant setup time between exercises. The transition is designed to be fast and intuitive, keeping training momentum high without a lengthy reconfiguration between movements.
A self-adjusting lower leg pad automatically maintains correct alignment through both exercises, and the adjustable back pad and start position settings accommodate any user size. A firm round thigh pad locks the body stable during curls to prevent hip lift and keep hamstring load consistent throughout the movement. Starting at 20 lb with plate-loaded resistance - warm-up through maximal loading with no stack ceiling. Two integrated weight horns keep plates organized on the unit. New.
Leg extension - primary muscles
Quadriceps Rectus Femoris
Leg curl - primary muscles
Biceps Femoris Semitendinosus Semimembranosus
Secondary muscles
Gastrocnemius Glutes Hip Flexors
Key features
Pop-Pin Quick-Change Between Exercises
A pop-pin selector converts the machine between leg extension and seated leg curl without tools - a fast, intuitive transition that keeps training intensity high without significant setup time between movements.
Self-Adjusting Lower Leg Pad
The lower leg pad automatically adjusts to maintain correct alignment through both extension and curl movements - reducing manual setup between exercises and ensuring proper positioning for every user without additional adjustment steps.
Firm Round Thigh Pad
A firm round thigh pad braces the leg during seated curls - preventing hip lift and keeping the hamstrings under consistent, direct load through the full curl arc without compensation from the hip flexors.
Adjustable Back Pad & Start Positions
Back pad and start position both adjust independently for any user size - setting the correct hip angle and range of motion for both exercises before the first rep begins and maintaining it throughout the set.
Plate-Loaded - 20 lb Starting Weight
Olympic plate loading with a 20 lb starting weight covers warm-up and technique work through to maximal loading - no stack ceiling, unrestricted progressive overload for serious quad and hamstring development over time.
Specifications
Dimensions (L × W × H)
48" × 55" × 45"
Total Weight
430 lb
Starting Weight
20 lb
Plate-loaded · No stack ceiling
Condition
New
OG Series · BUILT Strength
Functions & Adjustability
Leg Extension · Seated Leg Curl
Pop-pin quick-change · Self-adjusting leg pad · Adjustable back pad & ROM · Firm thigh pad · 2 weight horns
Buyer questions
Is a combo leg extension and leg curl as good as two machines?
For home gyms, studios, and smaller facilities, a combo is usually the smarter buy: one footprint, one purchase, and a self-adjusting lower leg pad that keeps alignment right for both movements. Busy gyms where two members need both stations at the same time may still want separate machines.
Why pick a plate loaded leg curl over a selectorized one?
Plate loading has no stack ceiling, so strong lifters never top out, and the two integrated weight horns keep plates on the unit. Selectorized stacks change weight faster, which matters most on crowded commercial floors.
What muscles does it work?
Leg extension targets the quadriceps, including the rectus femoris. The seated leg curl targets the biceps femoris, semitendinosus, and semimembranosus, with the calves and glutes assisting.
Related: lower body plate loaded machines, BUILT OG Series, all plate loaded machines.
PDF
Assembly manual
BUILT Strength ‘OG’ Series Plate Loaded Seated Leg Extension / Leg Curl
The step-by-step factory guide for putting this machine together. Handy to look over before delivery day.
View manual
Download PDF
Rather not build it?
We will assemble it for you
Brought inside to the room you choose
Assembled and set up by our crew
Packaging taken away
Choose Inside Delivery & Assembly as your delivery option at checkout.
How assembly works
1. What are the exact dimensions and space requirements for this machine?
This machine measures 48 inches front to back, 55 inches wide, and 45 inches high, with a footprint of 18 square feet. We suggest allowing extra clearance around the unit for comfortable use and plate loading.
2. How does the plate-loaded resistance work and what is the starting weight?
The resistance is plate-loaded, so you add Olympic plates to set your desired weight. The starting resistance is 20 lb, and there is no upper stack limit.
3. What muscle groups does this machine train?
It is designed to train the quadriceps during leg extensions and the hamstrings during seated leg curls.
4. How does this OG Series model switch between leg extension and leg curl exercises?
It uses a pop-pin quick-change selector to switch between leg extension and seated leg curl without tools, allowing fast transitions between exercises.
5. What warranty comes with this new machine?
New BUILT Strength equipment comes with the manufacturer warranty. You can find full warranty details on our Product Guarantees page.
6. What delivery options are available for this product?
You can choose Driveway Freight Delivery or Inside Delivery & Assembly at checkout. The shipping calculator on the product page shows the available options for your ZIP code.
30-Day Returns & Exchanges
Buy with confidence. Every Build A Gym order includes a 30-day window to return or exchange, whether you want a different size, color or configuration. Return shipping is the customer's responsibility and a 15% restocking fee applies to preference returns; warranty and damage claims carry no restocking fee. Full details in our Returns, Exchange & Refund Policy.
Quick answer: A leg extension leg curl machine trains the quads (extension) and hamstrings (seated curl) on one frame, so you get two lower-body isolation stations in a single footprint. The BUILT Strength OG Series version is plate loaded, switches movements with a tool-free pop-pin, and starts at 20 lb with no stack ceiling.
The BUILT Strength OG Series Plate Loaded Leg Extension / Seated Leg Curl switches between quad isolation and hamstring development via a quick-change pop-pin selector - no tools, no significant setup time between exercises. The transition is designed to be fast and intuitive, keeping training momentum high without a lengthy reconfiguration between movements.
A self-adjusting lower leg pad automatically maintains correct alignment through both exercises, and the adjustable back pad and start position settings accommodate any user size. A firm round thigh pad locks the body stable during curls to prevent hip lift and keep hamstring load consistent throughout the movement. Starting at 20 lb with plate-loaded resistance - warm-up through maximal loading with no stack ceiling. Two integrated weight horns keep plates organized on the unit. New.
Leg extension - primary muscles
Quadriceps Rectus Femoris
Leg curl - primary muscles
Biceps Femoris Semitendinosus Semimembranosus
Secondary muscles
Gastrocnemius Glutes Hip Flexors
Key features
Pop-Pin Quick-Change Between Exercises
A pop-pin selector converts the machine between leg extension and seated leg curl without tools - a fast, intuitive transition that keeps training intensity high without significant setup time between movements.
Self-Adjusting Lower Leg Pad
The lower leg pad automatically adjusts to maintain correct alignment through both extension and curl movements - reducing manual setup between exercises and ensuring proper positioning for every user without additional adjustment steps.
Firm Round Thigh Pad
A firm round thigh pad braces the leg during seated curls - preventing hip lift and keeping the hamstrings under consistent, direct load through the full curl arc without compensation from the hip flexors.
Adjustable Back Pad & Start Positions
Back pad and start position both adjust independently for any user size - setting the correct hip angle and range of motion for both exercises before the first rep begins and maintaining it throughout the set.
Plate-Loaded - 20 lb Starting Weight
Olympic plate loading with a 20 lb starting weight covers warm-up and technique work through to maximal loading - no stack ceiling, unrestricted progressive overload for serious quad and hamstring development over time.
Specifications
Dimensions (L × W × H)
48" × 55" × 45"
Total Weight
430 lb
Starting Weight
20 lb
Plate-loaded · No stack ceiling
Condition
New
OG Series · BUILT Strength
Functions & Adjustability
Leg Extension · Seated Leg Curl
Pop-pin quick-change · Self-adjusting leg pad · Adjustable back pad & ROM · Firm thigh pad · 2 weight horns
Buyer questions
Is a combo leg extension and leg curl as good as two machines?
For home gyms, studios, and smaller facilities, a combo is usually the smarter buy: one footprint, one purchase, and a self-adjusting lower leg pad that keeps alignment right for both movements. Busy gyms where two members need both stations at the same time may still want separate machines.
Why pick a plate loaded leg curl over a selectorized one?
Plate loading has no stack ceiling, so strong lifters never top out, and the two integrated weight horns keep plates on the unit. Selectorized stacks change weight faster, which matters most on crowded commercial floors.
What muscles does it work?
Leg extension targets the quadriceps, including the rectus femoris. The seated leg curl targets the biceps femoris, semitendinosus, and semimembranosus, with the calves and glutes assisting.
Related: lower body plate loaded machines, BUILT OG Series, all plate loaded machines.
PDF
Assembly manual
BUILT Strength ‘OG’ Series Plate Loaded Seated Leg Extension / Leg Curl
The step-by-step factory guide for putting this machine together. Handy to look over before delivery day.
View manual
Download PDF
Rather not build it?
We will assemble it for you
Brought inside to the room you choose
Assembled and set up by our crew
Packaging taken away
Choose Inside Delivery & Assembly as your delivery option at checkout.
How assembly works
1. What are the exact dimensions and space requirements for this machine?
This machine measures 48 inches front to back, 55 inches wide, and 45 inches high, with a footprint of 18 square feet. We suggest allowing extra clearance around the unit for comfortable use and plate loading.
2. How does the plate-loaded resistance work and what is the starting weight?
The resistance is plate-loaded, so you add Olympic plates to set your desired weight. The starting resistance is 20 lb, and there is no upper stack limit.
3. What muscle groups does this machine train?
It is designed to train the quadriceps during leg extensions and the hamstrings during seated leg curls.
4. How does this OG Series model switch between leg extension and leg curl exercises?
It uses a pop-pin quick-change selector to switch between leg extension and seated leg curl without tools, allowing fast transitions between exercises.
5. What warranty comes with this new machine?
New BUILT Strength equipment comes with the manufacturer warranty. You can find full warranty details on our Product Guarantees page.
6. What delivery options are available for this product?
You can choose Driveway Freight Delivery or Inside Delivery & Assembly at checkout. The shipping calculator on the product page shows the available options for your ZIP code.
30-Day Returns & Exchanges
Buy with confidence. Every Build A Gym order includes a 30-day window to return or exchange, whether you want a different size, color or configuration. Return shipping is the customer's responsibility and a 15% restocking fee applies to preference returns; warranty and damage claims carry no restocking fee. Full details in our Returns, Exchange & Refund Policy.
Save 5%
Complete the room
The machines our install crew puts in the same room as this one - priced as one shipment, delivered in one booking.
$1,395.00
This machine
Bundle total
- Items
- $1,633.28
- Bundle price
- $1,551.62
- Estimated bundle saving
- −$81.66
- Everything arrives by
- Dec 10
One freight booking, one delivery window, one crew. Inside Delivery & Assembly available on the whole bundle.