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Sports & Fitness Exchange

Sports & Fitness Exchange Leg Extension and Prone Leg Curl Combo Machine

$2,199.00 $2,499.00 Save $300.00

The SFE Leg Extension and Prone Leg Curl Combo Machine packs two of the most effective lower-body isolation moves into one commercial-grade station. Quick adjustments switch between seated leg extensions for quads and prone leg curls for hamstrings, the 250lb stack at a 1:1 pull ratio handles serious progressive overload, and 9 starting angles plus 5 foot-roller positions dial in the perfect range for every user.

  • Quads and hamstrings
    Two essential isolation moves in one machine.
  • Highly adjustable
    9 starting angles, 5 foot-roller positions.
  • Smooth tension curve
    Aluminum pulleys deliver consistent resistance.
  • Commercial-grade build
    11-gauge ASTM A36 steel frame.
Tax free (except CA)
30 day returns
Free USA shipping
1 year warranty

The SFE Selectorized Leg Extension and Prone Leg Curl Combo Machine packs two of the most effective lower-body isolation movements into a single, compact, commercial-grade footprint. The 250lb stack at a true 1:1 pull ratio handles serious progressive overload.

Adjustability is what sets this machine apart: 9 starting-angle settings let you dial in the exact range of motion you need, and 5 foot-roller positions accommodate different leg lengths. Quick mode switching turns the same machine from a quad-focused station to a hamstring-focused one in under a minute.

Construction is built for commercial daily use: 11-gauge ASTM A36 steel, electrostatic powder coating, sealed-bearing aluminum pulleys, military-spec cable, and durable urethane grips. Rear shrouds protect the weight stack and enhance long-term durability.

If you want both staple lower-body isolation moves in one footprint without compromising smoothness or progression, this combo is built for that.

  • Weight stack: 250lb selectorized
  • Pull ratio: 1:1
  • Modes: Leg Extension, Prone Leg Curl
  • Starting angles: 9 settings
  • Foot-roller positions: 5
  • Frame: 11-gauge ASTM A36 steel with electrostatic powder coat
  • Pulleys: Aluminum with sealed bearings
  • Cable: Military-spec
  • Grips: Urethane composite
  • Dimensions: 65 inch L x 39 inch W x 56 inch H
  • Leg Extension and Prone Leg Curl Combo Machine
  • 250lb selectorized weight stack
  • Magnetic selector pin
  • Assembly hardware
  • User manual
  • Configure the seat pad, back pad, and foot roller for your selected movement before loading.
  • Use the 9 starting-angle settings to match your range of motion.
  • Move through full controlled range with smooth tempo on both phases.
  • Switch between modes within the same workout for balanced quad and hamstring development.

Combining the two staple lower-body isolation moves in one station unlocks balanced quad and hamstring development with no progression compromise.

  • Balanced quad and hamstring training in one footprint
  • Honest progressive overload through 250lb stack at 1:1 ratio
  • Highly adjustable to fit a wide range of users
  • Commercial-grade build that handles daily heavy use

1-Year Manufacturer Warranty

For shipping timelines and delivery details, please review our Shipping Policy.

If you have any questions before or after your purchase, call us at +1 (800) 686-5898.

30 Day Hassle-Free Returns

Most eligible products may be returned within 30 days of delivery in original condition and packaging. See our Refund Policy for full details.

How Returns Work

The return process is straightforward. Once approved, you'll receive return instructions and the correct return address. Items must be sent back in their original condition and packaging to ensure proper processing.

Important Return Information

Returns must be requested within 30 days of delivery. Items should be returned in original packaging and in unused condition. Depending on the product and manufacturer, return shipping costs, processing fees, or restocking fees may apply. Financing-related fees are non-refundable, and refunds are issued to the original payment method once the return is received and inspected.

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In Stock — Ready to Ship

Quads and hamstrings, both isolated, in one footprint.

Quads and hamstrings, both isolated, in one footprint.
Sports & Fitness Exchange Leg Extension and Prone Leg Curl Combo Machine

Why the Leg Extension and Prone Leg Curl Combo Machine

Commercial-grade construction and ergonomic design built for daily heavy use.

2 machines in 1
9 starting-angle settings
5 foot-roller positions
250lb selectorized stack
2 machines in 1

2 machines in 1

Effortlessly adjust seat pad, back pad, and foot roller to switch between leg extension and prone leg curl modes.

9 starting-angle settings

9 starting-angle settings

Precise range-of-motion control for both quad and hamstring movements.

5 foot-roller positions

5 foot-roller positions

Fits different leg lengths and accommodates various biomechanics.

250lb selectorized stack

250lb selectorized stack

Solid-steel weight stack with self-lubricating bushings and magnetic selector pin.

1:1 pull ratio

1:1 pull ratio

True weight-to-resistance for honest progressive overload tracking.

11-gauge ASTM A36 steel frame

11-gauge ASTM A36 steel frame

Industrial-grade construction for rock-solid durability.

Aluminum pulleys

Aluminum pulleys

Sealed-bearing pulleys deliver smooth, friction-minimized motion.

Military-spec cable

Military-spec cable

High-strength cable rated for daily heavy use.

How to use the Leg Extension and Prone Leg Curl Combo Machine

Choose your mode

1 - Choose your mode

Seat pad down + back pad up = Leg Extension Mode. Seat pad up + back pad down = Prone Leg Curl Mode.

Set angle and roller position

2 - Set angle and roller position

Pin the starting angle from the 9 options and select foot-roller position from the 5 options to fit your leg length.

Select weight and execute

3 - Select weight and execute

Insert the magnetic selector pin at your target load on the 250lb stack and execute through full controlled range.

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FAQs

How quickly can I switch between modes?

Most users switch in under 60 seconds by adjusting the seat pad, back pad, and foot roller positions.

What is the maximum weight?

250lb at a true 1:1 pull ratio.

Why 9 starting angles?

Different starting angles let you target different parts of the muscle's range and fit users with different leg lengths and ranges of motion. The variety is what makes this machine work for everyone from rehab patients to elite lifters.

Is the steel frame really commercial-grade?

Yes. The frame uses 11-gauge ASTM A36 steel, which is the same grade used in commercial gym equipment built for daily heavy traffic.

Will it fit in a home gym?

Yes. The 65 inch by 39 inch footprint fits most serious home gyms while still delivering commercial-grade functionality.

Where can I find longevity devices similar to the Leg Extension and Prone Leg Curl Combo Machine?

Check out these related biohacking equipment collections.