Parcel ground shipping
Items weighing 149 lb or less ship by ground parcel rather than freight.
Bars, handles and straps shown in photos are not always included. Check the description, or add attachments to your order.
Receive by Oct 28
Remanufactured
Matrix G7 Back Extension
$2,295.00
Save 61%
New retail $5,999 —
you save $3,704 buying remanufactured
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See similar machines in stock →Parts & Labor, Fully Rebuilt
Remanufactured to full mechanical spec, covered from the day it lands.
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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 28
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: 51" × 48" × 54" 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 Matrix G7 Back Extension strengthens the lower back through a seated, fully supported extension — the user drives back against a contoured pad while the machine guides the torso through a controlled arc. Selectorized resistance trains the spinal erectors directly, with far more control and precise loading than a roman chair or hyperextension bench.
Multi-position foot placement fits a wide range of users, and a thumb-switch start position lets each person set a comfortable range of motion without leaving the seat. A 240 lb stack and heavy-gauge G7 frame make it a durable core and posterior-chain staple for commercial strength floors, physical-conditioning spaces, and serious home gyms.
Primary muscles targeted
Lower Back
Secondary muscles
Glutes Hamstrings
Key features
Contoured back pad
Shaped to spread load evenly across the upper back, keeping pressure off the spine through every extension.
Thumb-switch start position
Adjust the starting angle from the seat with a single thumb switch, setting a safe, comfortable range for each user.
Multi-position foot placement
Several foot positions let users of different heights brace securely and keep the hips locked in place.
240 lb selectorized stack
Pin-select resistance adjusts in seconds, scaling from light rehab-style work to heavy posterior-chain training.
Commercial steel construction
Heavy-duty G7 frame and durable upholstery are built for daily commercial use with minimal maintenance.
Specifications
Dimensions (L × W × H)
51" × 48" × 54"
1275 × 1200 × 1350 mm
Product weight
704 lb
319 kg
Weight stack
240 lb
109 kg
Start position
Thumb-switch
Adjustable from the seat
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 Matrix G7 Back Extension strengthens the lower back through a seated, fully supported extension — the user drives back against a contoured pad while the machine guides the torso through a controlled arc. Selectorized resistance trains the spinal erectors directly, with far more control and precise loading than a roman chair or hyperextension bench.
Multi-position foot placement fits a wide range of users, and a thumb-switch start position lets each person set a comfortable range of motion without leaving the seat. A 240 lb stack and heavy-gauge G7 frame make it a durable core and posterior-chain staple for commercial strength floors, physical-conditioning spaces, and serious home gyms.
Primary muscles targeted
Lower Back
Secondary muscles
Glutes Hamstrings
Key features
Contoured back pad
Shaped to spread load evenly across the upper back, keeping pressure off the spine through every extension.
Thumb-switch start position
Adjust the starting angle from the seat with a single thumb switch, setting a safe, comfortable range for each user.
Multi-position foot placement
Several foot positions let users of different heights brace securely and keep the hips locked in place.
240 lb selectorized stack
Pin-select resistance adjusts in seconds, scaling from light rehab-style work to heavy posterior-chain training.
Commercial steel construction
Heavy-duty G7 frame and durable upholstery are built for daily commercial use with minimal maintenance.
Specifications
Dimensions (L × W × H)
51" × 48" × 54"
1275 × 1200 × 1350 mm
Product weight
704 lb
319 kg
Weight stack
240 lb
109 kg
Start position
Thumb-switch
Adjustable from the seat
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.
$2,295.00
This machine
Bundle total
- Items
- $4,604.00
- Bundle price
- $4,373.80
- Estimated bundle saving
- −$230.20
- Ships complete in
- 4–6 weeks
One freight booking, one delivery window, one crew. Inside Delivery & Assembly available on the whole bundle.