Parcel ground shipping
Items weighing 149 lb or less ship by ground parcel rather than freight.
Receive by Oct 2
Remanufactured
Precor Discovery Series Back Extension
$1,095.00
Save 68%
New retail $3,499 —
you save $2,404 buying remanufactured
In Stock
Parts & Labor, Fully Rebuilt
Remanufactured to full mechanical spec, covered from the day it lands.
Shipping calculator
Enter your state and ZIP code to see delivery options and prices.
Machine overview
Condition: Remanufactured
Warranty: 1 Year Parts & Labor (Extended Available)
Returns: 30-Day Returns & Exchanges
Shipping: Driveway Delivery, or Inside Delivery & Assembly
Receive by: Oct 2
How It Ships: Fully Assembled
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" × 43" × 59" tall
Financing: From $174.37/mo or 0% APR with
Check your purchasing powerWhat Remanufactured Means
Every remanufactured machine is fully disassembled, deep cleaned, repaired or re-parted to factory spec, then tested under load before it ships. Backed by one year parts and labor, with extended coverage available.
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 Precor Discovery Series Back Extension Machine delivers selectorized isolated lumbar training with a contoured back pad, adjustable start position, integrated footplate, and precision weight stack resistance — 488 lb commercial Discovery frame, 48"×43" footprint. The selectorized back extension machine is the controlled-resistance alternative to the bodyweight Roman chair or 45° hyperextension bench: where the bodyweight versions load the erector spinae with a fixed percentage of the user's own bodyweight determined by their position on the pad, the selectorized machine applies a precisely calibrated resistance from the weight stack that is independent of the user's body weight. This makes progressive loading straightforward — add a plate increment to the stack each session — rather than requiring the user to add a weighted plate to their chest or behind their head, which introduces a secondary loading challenge and a spinal compression component that is not present when the resistance comes from a cable stack. The adjustable start position accommodates users whose lumbar flexion range varies due to flexibility, injury history, or rehabilitation stage — setting the start point to the user's comfortable beginning angle means the full effective extension arc is covered without forcing the user into a flexion depth that exceeds their safe range. The integrated footplate provides secure anchoring throughout the extension movement, preventing the hip and pelvis from lifting off the pad at the top of the extension range — a compensation that shifts load from the lumbar extensors into the glutes and hamstrings and reduces the isolation benefit.
Ergonomically contoured back pad for comfort and spinal support throughout the extension range. 488 lb Precor Discovery commercial back extension frame, 48"×43" footprint. Contact us for stack specifications. Remanufactured.
Primary muscles targeted
Erector Spinae Multifidus Gluteus Maximus
Secondary muscles
Hamstrings Quadratus Lumborum Core Stabilizers
Key features
Selectorized Stack · Adjustable Start — Progressive Loading Without Body Weight Dependency
Selectorized resistance loads the lumbar extensors from the weight stack rather than from body weight — progressive overload by adding stack increments each session rather than holding weighted plates against the chest. Adjustable start position sets the beginning flexion angle to each user's comfortable range, covering the full productive extension arc without forcing users into a depth that exceeds their safe or comfortable lumbar flexion.
Integrated Footplate · Contoured Back Pad · 488 lb Frame
Integrated footplate anchors the hip and pelvis throughout the extension arc — preventing hip lift at the top of the extension range that shifts load from the lumbar extensors into the glutes and hamstrings, reducing the isolation benefit. Ergonomically contoured back pad provides support and comfort throughout the range of motion. 488 lb Discovery commercial frame for long-term high-traffic durability.
Specifications
Dimensions (L × W × H)
48" × 43" × 59"
Machine Weight
488 lb
Weight Stack
Contact Us
Adj. start position · Footplate · Contoured back pad
Design
Selectorized · Adj. Start · Footplate · 488 lb
Selectorized weight stack · Adjustable start position · Integrated footplate · Contoured back pad · Heavy-duty Discovery frame · 488 lb · 48"×43" footprint
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 Precor Discovery Series Back Extension Machine delivers selectorized isolated lumbar training with a contoured back pad, adjustable start position, integrated footplate, and precision weight stack resistance — 488 lb commercial Discovery frame, 48"×43" footprint. The selectorized back extension machine is the controlled-resistance alternative to the bodyweight Roman chair or 45° hyperextension bench: where the bodyweight versions load the erector spinae with a fixed percentage of the user's own bodyweight determined by their position on the pad, the selectorized machine applies a precisely calibrated resistance from the weight stack that is independent of the user's body weight. This makes progressive loading straightforward — add a plate increment to the stack each session — rather than requiring the user to add a weighted plate to their chest or behind their head, which introduces a secondary loading challenge and a spinal compression component that is not present when the resistance comes from a cable stack. The adjustable start position accommodates users whose lumbar flexion range varies due to flexibility, injury history, or rehabilitation stage — setting the start point to the user's comfortable beginning angle means the full effective extension arc is covered without forcing the user into a flexion depth that exceeds their safe range. The integrated footplate provides secure anchoring throughout the extension movement, preventing the hip and pelvis from lifting off the pad at the top of the extension range — a compensation that shifts load from the lumbar extensors into the glutes and hamstrings and reduces the isolation benefit.
Ergonomically contoured back pad for comfort and spinal support throughout the extension range. 488 lb Precor Discovery commercial back extension frame, 48"×43" footprint. Contact us for stack specifications. Remanufactured.
Primary muscles targeted
Erector Spinae Multifidus Gluteus Maximus
Secondary muscles
Hamstrings Quadratus Lumborum Core Stabilizers
Key features
Selectorized Stack · Adjustable Start — Progressive Loading Without Body Weight Dependency
Selectorized resistance loads the lumbar extensors from the weight stack rather than from body weight — progressive overload by adding stack increments each session rather than holding weighted plates against the chest. Adjustable start position sets the beginning flexion angle to each user's comfortable range, covering the full productive extension arc without forcing users into a depth that exceeds their safe or comfortable lumbar flexion.
Integrated Footplate · Contoured Back Pad · 488 lb Frame
Integrated footplate anchors the hip and pelvis throughout the extension arc — preventing hip lift at the top of the extension range that shifts load from the lumbar extensors into the glutes and hamstrings, reducing the isolation benefit. Ergonomically contoured back pad provides support and comfort throughout the range of motion. 488 lb Discovery commercial frame for long-term high-traffic durability.
Specifications
Dimensions (L × W × H)
48" × 43" × 59"
Machine Weight
488 lb
Weight Stack
Contact Us
Adj. start position · Footplate · Contoured back pad
Design
Selectorized · Adj. Start · Footplate · 488 lb
Selectorized weight stack · Adjustable start position · Integrated footplate · Contoured back pad · Heavy-duty Discovery frame · 488 lb · 48"×43" footprint
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.
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.
$1,095.00
This machine
Bundle total
- Items
- $3,347.28
- Bundle price
- $3,179.92
- Estimated bundle saving
- −$167.36
- Ships complete in
- 4–6 weeks
One freight booking, one delivery window, one crew. Inside Delivery & Assembly available on the whole bundle.