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Leg Extension

Keystone I V-KEY-SL-71

Leg Extension

Inspire users to build and define their quadriceps with a Keystone Leg Extension 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.

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Comfortable, Familiar Motion

A refined cam profile matches the body’s natural strength curve to ensure smooth reps and consistent resistance throughout the full range of motion.
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Supportive Upright Positioning

A naturally upright seated position and optimized seat angle help stabilize the user while allowing for the kind of targeted quadriceps activation that maximizes results.

Stability & Security

A pivoting ankle pad automatically adjusts to support users of all sizes, while seat pad handles provide added stability during leg extension exercises.

Simple Set-Up

Minimal adjustment points highlighted for intuitive use make it easy to get started, while a ratcheting back pad helps users of virtually any height find a comfortable fit.
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Comfortable and Easy to Clean

Durable, moisture-resistant pads keep their shape and comfort even after years of use.
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Smart, Simple 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, non-slip storage shelf and device cradle.
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Lasting Durability

Count on all our selectorized stations to withstand intense workouts and constant use thanks to oversized steel frames with robotic welds, reinforced pulleys, solid steel pivot points and heavy-gauge cables.
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Instructional Insights

Large, bright instructional 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

Color Coded Pivots & Points of Adjustment

Yes

User Adjustment Range

4-position range of motion

Seat Adjustment

7-position back pad (ratcheting adjustment), fixed seat

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

Electronic counter displays reps and time with reset buttons

Rep Counter

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

133 x 104 x 155 cm / 52.4” x 40.9” x 61”

Max ”In-use” Dimensions

166 x 104 x 155 cm / 65.4” x 40.9” x 61”

Product Weight

239.2 kg / 527.4 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

Double-seam stitched vinyl cover with wood-backed injection-molded urethane foam

Personal Storage

Tactile storage mats, personal device cradle

Weight Stack

Total Stack Weight

107 kg / 235 lbs.

Max Training Weight

109.3 kg / 240 lbs. including incremental weight

Weight Plate Increments

7 kg / 15 lbs.

Weight Stack Guarding

Full front and rear shields

Consistent Stack Height

Yes

Back-to-back Configurations

Yes

Color Coded Pivots & Points of Adjustment

Yes

User Adjustment Range

4-position range of motion

Seat Adjustment

7-position back pad (ratcheting adjustment), fixed seat