{"product_id":"selectorized-leg-extension-prone-leg-curl-combo-w-250lb-weight-stack","title":"SFE Selectorized Leg Extension \u0026 Prone Leg Curl Machine","description":"\u003cp\u003eVersatile Lower-Body Training\u003c\/p\u003e\n\u003cp\u003eTrain the quadriceps and hamstrings from one compact, commercial-grade station. The machine transitions between seated leg extensions and prone leg curls, combining two foundational movements without requiring separate machines.\u003c\/p\u003e\n\u003cp\u003eDual-Function Adjustability\u003c\/p\u003e\n\u003cp\u003eFor leg extensions, position the seat pad down and raise the back pad. For prone leg curls, raise the seat pad and lower the back pad. Nine starting-angle positions customize the starting point and range of motion, while five foot-roller positions refine lower-leg placement for comfort, alignment, and control.\u003c\/p\u003e\n\u003cp\u003eSelectorized Resistance\u003c\/p\u003e\n\u003cp\u003eThe 250 lb solid-steel weight stack provides substantial resistance and adjusts quickly through a magnetic selector pin without loading or unloading plates. A direct 1:1 pull ratio makes the selected resistance straightforward to understand and track.\u003c\/p\u003e\n\u003cp\u003eSmooth Commercial Performance\u003c\/p\u003e\n\u003cp\u003eAluminum pulleys with sealed bearings reduce friction and support smooth, consistent cable travel. Self-lubricating weight-stack bushings promote dependable vertical movement, while military-spec cable is engineered for repeated use. Durable urethane grips provide secure, comfortable contact during both exercises.\u003c\/p\u003e\n\u003cp\u003eHeavy-Duty Construction\u003c\/p\u003e\n\u003cp\u003eThe frame is built from 11-gauge ASTM A36 steel for commercial-grade stability and durability. An electrostatic powder-coated finish adds surface protection while maintaining a refined appearance. Protective rear weight-stack shrouds safeguard internal components and create a clean, finished profile.\u003c\/p\u003e\n\u003cp\u003eTraining Applications\u003c\/p\u003e\n\u003cp\u003eThe two movement patterns support quadriceps and hamstring isolation, lower-body strength development, muscle-building programs, balanced leg training, athletic performance, and controlled exercise. The machine is suited to commercial gyms, boutique fitness studios, personal training facilities, athletic performance centers, strength and conditioning environments, and luxury home gyms.\u003c\/p\u003e\n\u003cp\u003eSpecifications\u003c\/p\u003e\n\u003cp\u003eMachine dimensions are 65\" L × 39\" W × 56\" H. The system includes a 250 lb weight stack, 1:1 pull ratio, nine starting-angle positions, five foot-roller positions, aluminum pulleys with sealed bearings, military-spec cable, self-lubricating bushings, a magnetic selector pin, urethane grips, and rear shrouds.\u003c\/p\u003e\n\u003cp\u003e\u0026lt;b\u0026gt;This is not a medical device and is not intended to diagnose, treat, cure, or prevent any condition. Individuals with mobility limitations should consult a physician before use.\u0026lt;\/b\u0026gt;\u003cbr\u003e\u003c\/p\u003e","brand":"Sports \u0026 Fitness Exchange","offers":[{"title":"Default Title","offer_id":53782344532331,"sku":"GC-5058","price":2499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/8510\/5003\/files\/81xcw0w0cXL._AC_SX679.jpg?v=1787956029","url":"https:\/\/primevivre.com\/products\/selectorized-leg-extension-prone-leg-curl-combo-w-250lb-weight-stack","provider":"PrimeVivre","version":"1.0","type":"link"}