Keystone | V-KEY-SL-40
Biceps Curl
The Keystone Biceps Curl is a commercial biceps curl machine designed for gyms, fitness centers, and high-traffic training environments. It helps users strengthen and define their arms through precise body positioning geometry that supports proper form across a wide range of users.
Built with moisture-resistant cushioning and a welded steel frame, this selectorized strength training machine delivers long-term durability, comfort, and consistent performance in demanding commercial fitness facilities.
Built Around Biomechanics
The concave curl pad optimizes body positioning to more effectively isolate the biceps, while a refined cam design ensures consistent resistance through the natural range of motion.
Adjustable Grip Positions
Dual-position handles provide a comfortable non-slip grip while increasing exercise variety to maximize results.
Simple Set-Up
Minimal adjustment points highlighted for intuitive use make it easy to get started, while gas-assisted seat adjustment helps users of virtually any height find a comfortable fit.
Durable, Sweat-resistant Surfaces
Sculpted pads stay comfortable through hard use with materials that hold up against sweat and wear.
Designed with Users in Mind
Designed for real-word use, our selectorized equipment feature open frames, storage shelves and a compact layout.
Clear Instructional Guidance
Clear visuals and a quick-scan QR code helps users get started right.
Tested Beyond Industry Standards
Heavy-duty frames, strong welds and tested components deliver lasting value in high-use settings.
Specifications
Product features and specifications subject to change.
Adjustments
User Adjustment Range
N/A
Seat Adjustment
Roller ratcheting mechanism with gas-assist
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
150 x 115 x 155 cm / 59.1” x 45.3” x 61”
Max ”In-use” Dimensions
150 x 115 x 155 cm / 59.1” x 45.3” x 61”
Product Weight
200.2 kg / 441.4 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
Polyurethane molded foam
Personal Storage
Tactile storage mats, personal device cradle
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
N/A
Seat Adjustment
Roller ratcheting mechanism with gas-assist
Color-coded Pivots & Points of Adjustment
Yes