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Back extension G7-S52

MATRIX / Ultra

Back extension

G7-S52

Ultra Back Extension

A selectorized weight stack station for abdominal and lower-back training.

  • Contoured seat for support during exercise.
  • Dedicated personal storage.
Static dimensions
127.5 × 120 × 135 cm
In-use dimensions
145 × 120 × 135 cm
Weight stack
108 kg

PRODUCT DATA / G7-S52

All the details in one place.

Manufacturer specifications for the displayed version. Static and in-use dimensions are listed separately where published. Clearance, electrical and anchoring requirements will be verified during installation planning.

Dimensions, weight & installation

In-use dimensions
145 x 120 x 135 cm / 57.2” x 47.3” x 53”
Machine weight
316.1 kg / 697 lbs.
Static dimensions
127.5 x 120 x 135 cm / 50.1” x 47.3” x 53”

Construction, comfort & adjustment

Integrated leveling system
Yes, top-down leveler
Machine anchoring
Independent machine anchoring brackets
Front placards
Muscle call outs, exercise specific stretching, start & finish exercise illustrations, proper machine adjustments, color-coded machine identification
Color-coded pivots and adjustment points
Yes
Available frame colors
Iced Silver, Matte Black, Gloss Black, Lace White, Polarized Titanium
Frame finish
Manufacturer’s proprietary two-coat powder process
Contoured seat
Yes
User adjustment range
5 Back pad start positions
Placard color coding
Green (core)
Personal storage
Two tactile storage mats, personal device cradle and towel hook
Rear placards
Color-coded machine identification, exercise specific stretching

Display, data & connectivity

Rep counter power supply
Two AA batteries
Equipment usage tracking
Service mode tracks total reps and hours of use
Rep counter battery life
Approximately 3 years
Rep counter
Electronic counter displaying reps, exercise time and rest time

Performance & training system

Cable system
Internally lubricated cables & fittings
Total stack weight
108 kg / 240 lbs
Weight increments
4.5 kg / 10 lbs
Maximum training weight
111.4 kg / 247.5 lbs
Incremental weight system
1.1, 2.3, 3.4 kg / 2.5, 5, 7.5 lbs
Consistent 53-inch weight stack height
Yes
Weight stack guarding
Full front and rear guards

CONFIGURE YOUR MATRIX

Configuration is part of the choice.

The model, display, finish and weight stack depend on the available options. The selection tool lists Eurotec configurations and lets you add the required version to your equipment list.

Back extension Base Heavy

Base Heavy

G7-S52BH

Official Matrix Base Trim image, shared by the B and BH models. The weight stack and specifications shown here refer to BH.

Version specifications

Performance & training system

Stack Height
135 cm / 53”
Incremental weight system
No
Weight stack guarding
Full front and rear guards
Maximum training weight (G7-S52BH)
108 kg / 240 lbs.
Total Stack Weight (G7-S52BH)
108 kg / 240 lbs.
Cable system
Internally lubricated cables and fittings
Weight increments
4.5 kg / 10 lbs.

Dimensions, weight & installation

In-use dimensions
145 x 120 x 135 cm / 57.2” x 47.3” x 53”
Machine weight (G7-S52BH)
308.1 kg / 679.5 lbs.
Maximum user weight
136 kg / 300 lbs.
Static dimensions
127.5 x 120 x 135 cm / 50.1” x 47.3” x 53”

Construction, comfort & adjustment

Front placards
Muscle call outs, exercise-specific stretching, start and finish exercise illustrations, proper machine adjustments, color-coded machine identification
Rear placards
Color-coded machine identification, exercise-specific stretching
Placard color coding
Green (core)
Personal storage
Two tactile storage mats and one personal device cradle
Foot Platform
Yes
Contoured seat
Yes
Color-coded pivots and adjustment points
Yes
User adjustment range
5 back pad start positions
Available frame colors
Matte Black
Frame finish
Manufacturer’s proprietary two-coat powder process
Machine anchoring
Independent machine anchoring brackets
Integrated leveling system
Yes, top-down leveler

Display, data & connectivity

Rep counter
No
Select this version
Back extension ONYX

ONYX

G7-S52-OE

Manufacturer image of the ONYX version in Matte Black.

Version specifications

Dimensions, weight & installation

In-use dimensions
145 x 120 x 135 cm / 57.2” x 47.3” x 53”
Machine weight
316.1 kg / 697 lbs.
Static dimensions
127.5 x 120 x 135 cm / 50.1” x 47.3” x 53”

Construction, comfort & adjustment

Integrated leveling system
Yes, top-down leveler
Machine anchoring
Independent machine anchoring brackets
Front placards
Muscle call outs, exercise specific stretching, start & finish exercise illustrations, proper machine adjustments, color-coded machine identification
Color-coded pivots and adjustment points
Yes
Available frame colors
Matte Black
Frame finish
Manufacturer’s proprietary two-coat powder process
Contoured seat
Yes
User adjustment range
5 Back pad start positions
Placard color coding
Green (core)
Personal storage
Two tactile storage mats, personal device cradle and towel hook
Rear placards
Color-coded machine identification, exercise specific stretching

Display, data & connectivity

Rep counter power supply
Two AA batteries
Equipment usage tracking
Service mode tracks total reps and hours of use
Rep counter battery life
Approximately 3 years
Rep counter
Electronic counter displaying reps, exercise time and rest time

Performance & training system

Cable system
Internally lubricated cables & fittings
Total stack weight
108 kg / 240 lbs
Weight increments
4.5 kg / 10 lbs
Maximum training weight
111.4 kg / 247.5 lbs
Incremental weight system
1.1, 2.3, 3.4 kg / 2.5, 5, 7.5 lbs
Consistent 53-inch weight stack height
Yes
Weight stack guarding
Full front and rear guards
Select this version

DOCUMENTS / STAY IN THE DETAILS

Product dossier & manufacturer documents.

PRODUCT DOSSIER

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MATRIX 2026 / OFFICIAL PDF

Strength catalog 2026

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Sources & manufacturer website

Specifications are based on data from MATRIX in this site’s catalog. Manufacturer specifications may change; final configuration, availability, warranty and delivery will be defined in the Eurotec quotation.

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