BUILT Strength Infinite Series Back Extension
Parts & Labor, Plus Lifetime Frame
New equipment. Coverage starts on the date of delivery.
Shipping calculator
What New Means
Warranty Coverage
How to Place Your Order
Browse strength, cardio, or bundle packages and select the gear that fits your goal and space.
Schedule a free consultation and we will help you plan a layout that fits your space and budget.
We deliver nationwide, and Inside Delivery & Assembly is available if you would rather it arrive set up and ready to train on.
Your gym is ready. Train with commercial-grade equipment backed by warranty and support.
See How We Build Your Dream Gym
Follow our step-by-step process as we design, deliver, and install commercial-grade gym equipment.
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.
Pairs well with this
Product Details
High-performance new and remanufactured machines — inspected, serviced, and delivered with warranty.
The Infinite Series Back Extension pairs a fixed 45-degree platform with a 200 lb selectorized stack, so you can load the posterior chain far past bodyweight without waiting on plates. Adjustable-height thigh pads set the pivot at the hips for a clean hinge, while quilted leg rollers and thigh pads keep you locked in through every rep.
A D-clip attachment point accepts multiple handle styles — a straight bar is included — for weighted extensions that scale with the athlete, and a bar catch at the bottom keeps the bar within reach between sets. Fixed handlebars at the thigh pads assist entry and exit, and the textured flat and angled platforms deliver no-slip traction on high-traffic commercial floors.
Primary muscles targeted
Secondary muscles
Key features
Specifications
New equipment
1-Year Parts & Labor
Plus a lifetime frame warranty. Both the part and the labor are covered by Build A Gym for the first year of ownership.
1 Year
Parts & labor, from the date of delivery
Lifetime
Frame coverage on new equipment
+1 Year
With BUILT Care+, added before it ships
30 Days
To register — required to keep coverage
Covers mechanical and electrical failure under normal use. It does not cover failures caused by missed preventative maintenance, impact damage, or cosmetic wear.
Full warranty coverageShipping Calculator
Driveway Delivery
- We palletize and protect your equipment, then ship it with a vetted freight carrier anywhere in the lower 48. The driver lowers the pallet to ground level at your curb or driveway, and moving it inside is left to you.
Inside Delivery & Assembly
- Our full-service option, available wherever we deliver. We bring your equipment into the room of your choice on the first floor, assemble it, test it, and take the packaging away with us.
Warehouse Pickup
- Prefer to handle it yourself? Collect your order from our Jarrell, TX warehouse at no cost. Weekdays by appointment, and you will need a trailer or a pickup truck. We will help you load up and get you on your way.
1. How do I select weight on a selectorized machine?
Insert the weight pin into the desired stack hole; ensure it clicks into place before use.
2. What weight stack size should I choose?
Most base level weight stacks can accommodate even advanced lifters, but for the real weight-movers, look for the items with expansion stacks.
3. What maintenance is required?
Inspect guide rods and stack alignment monthly; wipe rods and replace worn bushings annually.
4. Is installation available?
Yes—schedule professional installation during checkout for a seamless setup.
5. What warranty covers these machines?
New units carry full OEM coverage; remanufactured units include a 12 month Build A Gym Guarantee.
The Infinite Series Back Extension pairs a fixed 45-degree platform with a 200 lb selectorized stack, so you can load the posterior chain far past bodyweight without waiting on plates. Adjustable-height thigh pads set the pivot at the hips for a clean hinge, while quilted leg rollers and thigh pads keep you locked in through every rep.
A D-clip attachment point accepts multiple handle styles — a straight bar is included — for weighted extensions that scale with the athlete, and a bar catch at the bottom keeps the bar within reach between sets. Fixed handlebars at the thigh pads assist entry and exit, and the textured flat and angled platforms deliver no-slip traction on high-traffic commercial floors.
Primary muscles targeted
Secondary muscles
Key features
Specifications
New equipment
1-Year Parts & Labor
Plus a lifetime frame warranty. Both the part and the labor are covered by Build A Gym for the first year of ownership.
1 Year
Parts & labor, from the date of delivery
Lifetime
Frame coverage on new equipment
+1 Year
With BUILT Care+, added before it ships
30 Days
To register — required to keep coverage
Covers mechanical and electrical failure under normal use. It does not cover failures caused by missed preventative maintenance, impact damage, or cosmetic wear.
Full warranty coverageShipping Calculator
Driveway Delivery
- We palletize and protect your equipment, then ship it with a vetted freight carrier anywhere in the lower 48. The driver lowers the pallet to ground level at your curb or driveway, and moving it inside is left to you.
Inside Delivery & Assembly
- Our full-service option, available wherever we deliver. We bring your equipment into the room of your choice on the first floor, assemble it, test it, and take the packaging away with us.
Warehouse Pickup
- Prefer to handle it yourself? Collect your order from our Jarrell, TX warehouse at no cost. Weekdays by appointment, and you will need a trailer or a pickup truck. We will help you load up and get you on your way.
1. What delivery options are there?
Nationwide curbside delivery to all 50 states; installation options available at checkout.
2. What warranty applies?
New machines carry the manufacturer's warranty; remanufactured units include a 1 year BAG Guarantee with extended warranties available.
3. What's your return policy?
Follow the link below for a comprehensive review of our cancellation & return policies https://ctxhomegyms.com/policies/refund-policy
4. Does the equipment arrive assembled?
Depends on the item. New equipment typically ships unassembled and crated. Remanufactured cardio and strength typically ship fully assembled on a pallet - exceptions may apply on certain machines. Contact us for more information regarding a specific item. Choosing Inside Delivery & Assembly guarantees full assembly in the room of your choice.
5. How long until my order ships?
Lead times vary by item and condition. Every product is marked with a "ship time" at the top of the product page.
Complete the room
The machines our install crew puts in the same room as this one - priced as one shipment, delivered in one booking.
$3,295.00
This machine
- Items
- $9,647.72
- Bundle price
- $9,165.34
- Estimated bundle saving
- −$482.38
- Ships complete in
- 4–6 weeks
Want Inside Delivery & Assembly? Here's what to expect
Securely Packaged
Your order is packaged and picked up by our trusted freight carriers who will process it on arrival at your local terminal.
Reliable Scheduling
One of our skilled third-party installation vendors will retrieve the package and contact you directly to schedule a delivery appointment.
Delivery & Installation
The installation team will deliver the equipment to your room of choice. Test it, clean it, and remove all debris and packaging.
Need Help Choosing the Right Equipment?
-
Virtual Consultation:
Book a video call with a gym specialist to talk through your goals, space, and budget. We'll recommend the right equipment and show you machines live on camera — no guesswork.
-
In-Person Showroom Visit:
Prefer to see it for yourself? Schedule a visit to one of our showrooms in Central TX to test equipment, inspect build quality up close, and get hands-on recommendations from our team.
-
Personalized Recommendations:
Whether you're outfitting a home gym or a full commercial facility, we'll help you build a plan that fits your needs — so you buy the right machines the first time.
You May Be Interested In
Equipment commonly purchased with this item
