Parcel ground shipping
Items weighing 149 lb or less ship by ground parcel rather than freight.
Receive by Sep 23
New
BUILT Strength Fractal Series Back Extension
$3,295.00
Parts & Labor, Plus Lifetime Frame
New equipment. Coverage starts on the date of delivery.
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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: Sep 23
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: 55" × 42" × 58" tall
Financing: From $174.37/mo or 0% APR with
Check your purchasing powerWhat 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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Product details
Commercial-grade equipment, inspected and supported by warranty.
The BUILT Strength Fractal Series Back Extension strengthens the erector spinae and posterior chain through a seated extension movement on a biomechanically accurate motion path with adjustable range of motion and seat height — dialing in the correct extension arc and starting position for each user's body proportions before the first rep. The contoured back pad delivers consistent contact across the full extension, and cushioned leg supports stabilize the lower body throughout the movement.
A 280 lb selectorized stack provides serious progressive loading for lumbar and posterior chain strength development — well above the 160–200 lb stacks common on back extension machines — and a 664 lb commercial-grade steel frame delivers the structural mass for stable sustained extension training in professional environments. New.
Primary muscles targeted
Erector Spinae Multifidus
Secondary muscles
Glutes Hamstrings Core Stabilizers
Key features
Biomechanically Accurate Motion Path
The guided extension path follows the natural spinal extension arc — keeping the erector spinae under consistent, correctly directed load through the full movement without the lateral drift or compensation that unguided back extension equipment allows.
Adjustable ROM & Seat Height
Range of motion and seat height both adjust independently — setting the correct extension arc and starting position for each user's torso length and flexibility before the first rep begins.
Contoured Back Pad & Cushioned Leg Supports
A contoured back pad maintains consistent contact across the full extension arc, and cushioned leg supports stabilize the lower body — keeping the user correctly positioned and the erector spinae engaged throughout every rep.
280 lb Stack · 664 lb Commercial Frame
A 280 lb selectorized stack supports serious progressive lumbar and posterior chain loading well above standard back extension machine capacities. The 664 lb commercial-grade frame delivers the stability and durability for sustained professional use.
Specifications
Dimensions (L × W × H)
55" × 42" × 58"
Machine Weight
664 lb
Weight Stack
280 lb
Pin-select selectorized
Condition
New
Fractal Series · BUILT Strength
Design & Adjustability
Adj. ROM & Seat · Contoured Back Pad
Biomechanical motion path · Adjustable ROM & seat height · Contoured back pad · Cushioned leg supports · 280 lb stack
Frame
11-Gauge (3mm) Steel
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.
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.
The BUILT Strength Fractal Series Back Extension strengthens the erector spinae and posterior chain through a seated extension movement on a biomechanically accurate motion path with adjustable range of motion and seat height — dialing in the correct extension arc and starting position for each user's body proportions before the first rep. The contoured back pad delivers consistent contact across the full extension, and cushioned leg supports stabilize the lower body throughout the movement.
A 280 lb selectorized stack provides serious progressive loading for lumbar and posterior chain strength development — well above the 160–200 lb stacks common on back extension machines — and a 664 lb commercial-grade steel frame delivers the structural mass for stable sustained extension training in professional environments. New.
Primary muscles targeted
Erector Spinae Multifidus
Secondary muscles
Glutes Hamstrings Core Stabilizers
Key features
Biomechanically Accurate Motion Path
The guided extension path follows the natural spinal extension arc — keeping the erector spinae under consistent, correctly directed load through the full movement without the lateral drift or compensation that unguided back extension equipment allows.
Adjustable ROM & Seat Height
Range of motion and seat height both adjust independently — setting the correct extension arc and starting position for each user's torso length and flexibility before the first rep begins.
Contoured Back Pad & Cushioned Leg Supports
A contoured back pad maintains consistent contact across the full extension arc, and cushioned leg supports stabilize the lower body — keeping the user correctly positioned and the erector spinae engaged throughout every rep.
280 lb Stack · 664 lb Commercial Frame
A 280 lb selectorized stack supports serious progressive lumbar and posterior chain loading well above standard back extension machine capacities. The 664 lb commercial-grade frame delivers the stability and durability for sustained professional use.
Specifications
Dimensions (L × W × H)
55" × 42" × 58"
Machine Weight
664 lb
Weight Stack
280 lb
Pin-select selectorized
Condition
New
Fractal Series · BUILT Strength
Design & Adjustability
Adj. ROM & Seat · Contoured Back Pad
Biomechanical motion path · Adjustable ROM & seat height · Contoured back pad · Cushioned leg supports · 280 lb stack
Frame
11-Gauge (3mm) Steel
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.
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.
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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
Bundle total
- Items
- $5,547.28
- Bundle price
- $5,269.92
- Estimated bundle saving
- −$277.36
- Ships complete in
- 4–6 weeks
One freight booking, one delivery window, one crew. Inside Delivery & Assembly available on the whole bundle.