Keystone | V-KEY-SL-52
Back Extension
Motivate exercise enthusiasts to strengthen their lower back muscles with a selectorized back extension station that will fit your commercial fitness facility as well as it fits everyone you serve. From precise body positioning geometry to moisture-resistant cushioning to welded-steel frames, we designed every detail for performance, comfort and durability in tough, high-traffic fitness environments.
Product availability may vary by region. Please contact your local office for more information.
Comfort & Moisture-Resistance
The ergonomically sculpted cushions make even hard sets comfortable, while moisture-resistant materials keep the cushions looking like new through years of demanding workouts.
Thoughtful Design
All our selectorized stations feature a low stack height for clean, open sight lines, plus space-saving back-to-back configurations, easily accessible open frames, nonslip storage shelf and device cradle.
Natural Biomechanics
Three start positions make it quick and easy for body types of all kinds to begin, a pivot point indicator optimizes hip alignment to reduce strain, and angled seat and lumbar pads support the user through the full range of motion for smooth, efficient reps.
Stability & Security
Dual foot bars provide excellent support and stability for users of all sizes during intense workouts.
Easy Adjustments
Minimal adjustment points highlighted for intuitive use make it easy for virtually anyone to find a comfortable fit and start a set.
Optional Enhancements
An optional incremental weight makes building progressions easier to for those just getting started, while the optional timer and rep counter can help users of all kinds get more out of every set.
Instructional Insights
Large, bright placards illustrate correct body positioning and use at a glance, while a QR code takes users to a short instructional video.
Specifications
Product features and specifications subject to change.
Adjustments
User Adjustment Range
3 user start options
Seat Adjustment
N/A
Color-coded Pivots & Points of Adjustment
Yes
Frame & Cables
Frame Color
Matte Black
Frame Finish
Proprietary two-coat powder process
Machine Anchoring
Yes
Cable Transmission
Internally lubricated cables and fittings
Optional Kit
Rep Counter (V-KEY-SL-RC1)
Electronic counter displays reps and time with reset buttons
Incremental Weight System (V-KEY-SL-IW)
2.3 kg / 5 lbs.
Tech Specs
Overall Dimensions
124 x 112 x 155 cm / 48.8” x 44.1” x 61”
Max ”In-use” Dimensions
128 x 112 x 155 cm / 50.4” x 44.1” x 61”
Product Weight
194.2 kg / 428.1 lbs.
User Amenities
Contoured Seat
Yes
Instructional Placards
Muscle call outs, start and finish exercise illustrations, proper machine movements, QR code link to how-to videos
Upholstery
Polyurethane molded foam
Personal Storage
Tactile storage mats, personal device cradle
Foot Support
Yes
Weight Stack
Total Stack Weight
73 kg / 160 lbs.
Max Training Weight
75.3 kg / 165 lbs. including incremental weight
Weight Plate Increments
5 kg / 10 lbs.
Weight Stack Guarding
Full front and rear shields
Consistent Stack Height
Yes: 155 cm / 61”
Back-to-back Configurations
Yes
User Adjustment Range
3 user start options
Seat Adjustment
N/A
Color-coded Pivots & Points of Adjustment
Yes