SportsArt DF-300 Performance Dual-Function Leg Extension/Leg Curl Machine

SportsArt SKU: 10-6898
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Regular price $5,195.00
Sale price $5,195.00 Regular price $6,275.00
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Regular price $5,195.00
Sale price $5,195.00 Regular price $6,275.00
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Product Information

The SportsArt DF-300 Leg Extension/Leg Curl combines seated quadriceps and hamstring training in one selectorized lower-body station.
Users adjust the seat back and leg pads for their proportions, then change between extension and seated-curl positions.
A direct-drive system with opposing cams minimizes cable slack and supports fast exercise changeover with uniform 11 lb plate increments.
The compact dual-function frame, supportive upholstery, and adjustable contact points accommodate repeated commercial lower-body training.

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Product Features

Dual exercise positioning supports quadriceps-focused leg extension and hamstring-focused seated leg curl on one station.

The direct-drive system uses opposing cams to reduce cable slack and speed transitions between movement modes.

An adjustable seat back and leg pads customize user positioning while uniform plate increments simplify load progression.

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Dual Exercise Function
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Direct-Drive Cam System
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Fast Exercise Changeover
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Adjustable Seat Back
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SportsArt DF-300 Leg Extension/Leg Curl

Extension And Curl Training:
The dual-function design trains the quadriceps through extension and the hamstrings through seated curling.

Responsive Direct Drive:
Two opposing cams maintain direct resistance delivery with reduced slack when switching exercise directions.

Individual Contact Adjustment:
Seat-back and leg-pad settings accommodate different user proportions and the selected lower-body movement.

Consistent Load Changes:
Twenty uniform plate increments support predictable resistance progression across both exercises and faster facility changeovers.

About SportsArt

SportsArt develops commercial cardio, strength, and functional training equipment for fitness facilities. Its range emphasizes durable facility-focused construction, biomechanically considered exercise design, and training formats that support varied users across professional environments.

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Specifications

Official Model Number DF-300 official model
Primary Exercise Purpose Dual-function leg extension curl training
Overall Machine Dimensions 53.1×39.8×64 inches / 134.8×101×162.5 centimeters
Total Machine Weight 494.9 lb / 224.5 kg
Standard Stack Weight 220 lb / 100 kg
Maximum User Capacity 500 lb / 227.3 kg
Extension Starting Resistance Extension 13lb / 6kg start
Curl Starting Resistance Curl 13lb / 6kg start
Direct Drive Design Direct-drive opposing cams reduce slack
Exercise Transition Design Quick transitions support dual exercise
User Adjustment Design Adjustable seat and leg pads

Warranty & Returns

Return Policy

To request a return or refund, customers can use our contact form, email , or phone – . Once the product is inspected and confirmed to be in brand new condition, we will initiate the refund, which typically takes 5–7 business days to post back to the original payment method. Refunds can be applied via the customer’s preferred method, including card or bank transfer. Shipping instructions and the return address will be provided upon contacting customer service. Please include photos if the product arrives damaged. Click here to view our complete return policy for more details.

Shipping Policy

Customers may contact us by phone or email anytime to inquire about the status of their order. While we may not always have a tracking link available before the order ships, we are happy to check its current status for you. If an item is never received, please contact us immediately. We will promptly file a claim on your behalf and ship a replacement to ensure you receive your product as soon as possible. to view our complete Shipping policy for more details.

Frequently Asked Questions

How is exercise mode changed?
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Return the mechanism fully to rest, select the intended extension or curl setup, and verify each adjustment.


How is the seat back adjusted?
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Move the back support to establish comfortable joint alignment and confirm it locks before selecting resistance.


How are leg pads adjusted?
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Position each contact pad for the selected movement without restricting the knee, then secure the settings.


How is extension positioning established?
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Sit supported, align the knees with the movement pivot, and place the lower legs against the pad.


How is curl positioning established?
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Select the seated-curl setup, maintain back support, and establish comfortable leg-pad contact before moving.


How is the selector used?
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With the mechanism resting, insert the selector fully into the chosen plate and verify engagement.


How are cams inspected?
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Move the unloaded mechanism slowly and check both cams for unobstructed rotation and abnormal cable slack.


How is upholstery cleaned?
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Clean the seat, back, and leg pads with approved cleaner on a soft cloth, then dry.