Forge Series · Pin-Select MODEL: HS31 LEG CURL/EXTENSION

HS31 LEG CURL/EXTENSION

A dual-function commercial leg machine combining leg curl and leg extension in a single unit. Delivers complete quadriceps and hamstring development with a 96 kg weight stack for serious upper leg training.
Retail Price
$2,895.00 MSRP · Request quote for bulk pricing
Wholesale pricing available — Apply for partner access

Bulk Pricing Available

  • Buy 3+ and save 5% 3–4 units — 5% off
Unit Price $2,895.00
Subtotal $2,895.00
Estimated Quote Total $2,895.00

Final pricing will be confirmed in your custom quote.

256kg
Machine Weight
96kg+4.6kg
Weight Stack
Pin-Select
Type
Commercial Grade Build
Warranty Included
Ships from Tulsa, OK
Key Features
  • Dual-function design for leg curl and leg extension in one machine
  • Leg extension movement for precise quadriceps isolation and peak contraction
  • Leg curl movement for complete hamstring development and posterior leg balance
  • 96 kg weight stack with 4.6 kg fine-tune increments
  • Space-efficient complete upper leg training solution for commercial facilities
Machine Specifications
Model Number HS31 LEG CURL/EXTENSION
Series Forge Series
Equipment Type Pin-Select
Machine Weight 256kg
Weight Stack 96kg+4.6kg
Dimensions 1290×1050×1635mm
Packing Size 1820×820×620mm
Muscle Group Quadriceps, Hamstrings, Quadriceps Femoris, Leg Flexors
Construction & Materials
Frame Material 11 Gauge Steel
Frame Finish Powder Coated (9 colors)
Upholstery Commercial Vinyl (10 colors)
Cable Type Aircraft Grade Steel Cable — Japanese Import, 189-wire, Rubber Coated
Seat Adjustment Adjustable — Multi-Position
Min. Ceiling 2400 mm / 94 in
Warranty Commercial Warranty — Contact for Terms. 3 Year Frame, 1 Year Parts, 1 Year Upholstery

The HS31 Leg Curl/Extension is a dual-function lower body machine engineered for complete upper leg development in commercial gym environments. The leg extension movement targets the quadriceps through a controlled upward arc, delivering precise isolation and peak contraction at full extension. The leg curl movement shifts focus to the hamstrings through a natural flexion path, building posterior leg strength and balance to complement quadriceps development. Training both sides of the upper leg in a single machine maximizes floor space efficiency while delivering a comprehensive leg conditioning program. Built to commercial standards with a 96 kg weight stack and precision-engineered components, the HS31 handles the demands of high-traffic gym use with consistent, reliable performance every session.

Who It's For
Commercial gyms, hotel fitness centers, corporate wellness facilities, and athletic training centers requiring professional-grade equipment.
Installation
Ships partially assembled. 2 people recommended. Allow 2m × 2m clearance.
Warranty
Commercial Warranty — Contact for Terms. 3 Year Frame, 1 Year Parts, 1 Year Upholstery
Need Guidance?
Call us at 918.706.5186 or contact us online to speak with a DAWG Built equipment specialist.

Color representations may vary slightly due to screen calibration. For a custom color, contact your DAWG Built sales representative.

Frame & Paint Colors
Matte Black
Pearl Black
White
Yellow
Orange
Sand Black
Silver Blue
Silver Grey
Silver Black
Silver Red
Upholstery & Leather
B6 Khaki
B10 Pink
B8 Crimson
B1 Red
B5 Brown
B2 Charcoal
B16 Black
B17 Dark
B12 Carbon
B3 Jet

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Technical Data

Full Specifications

Model Number
HS31 LEG CURL/EXTENSION
Series
Forge Series
Equipment Type
Pin-Select
Machine Weight
256kg
Weight Stack
96kg+4.6kg
Width
1290 mm
Length
1050 mm
Height
1635 mm
Packing Size
1820×820×620mm
Muscle Group
Quadriceps, Hamstrings, Quadriceps Femoris, Leg Flexors
Frame Colors
10 Standard
Upholstery
10 Options
HS31 LEG CURL/EXTENSION dimensions
Machine Dimensions
Dimensions (W×L×H) 1290×1050×1635mm
Packing Size 1820×820×620mm
Machine Weight 256kg
Weight Stack 96kg+4.6kg
Why DAWG Built

Built Different

Commercial Construction
11-gauge steel frame with CNC-machined pivot points. Built for 10,000+ cycles without performance degradation — because downtime is not an option.
Precision Engineering
Variable-radius cam delivers consistent, smooth resistance through the full range of motion. Biomechanically optimized for maximum muscle engagement.
Low Maintenance
Sealed weight stack housing, self-lubricating cable guide pulleys, and powder-coated frame reduce upkeep in high-traffic commercial facilities.
Full Customization
10 frame paint colors and 10 upholstery options. Custom color matching available on request to match your facility brand.
Ergonomic Design
Multi-position seat and pad adjustments accommodate users of all heights. Each machine's pad density is calibrated for its specific movement pattern.
Wholesale Program
Order 3+ machines and unlock automatic bulk discount. Apply for wholesale partner status for exclusive pricing and dedicated account support.
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