Nautilus Instinct Biceps Curl/Triceps Extension

The Nautilus Instinct Biceps Curl / Triceps Extension is a dual-function selectorized strength machine designed to deliver efficient arm training in a compact, user-friendly format. Built for commercial environments, it allows users to train both the biceps and triceps on one machine without sacrificing comfort, safety, or floor space. Part of the Instinct® Strength line, this unit is engineered for fast setup and intuitive use, making it suitable for beginners and experienced lifters alike. Multi-position hand grips support proper biomechanics for both curl and extension movements, while the guided motion path helps maintain consistent form throughout each repetition. An easy-up ratcheting seat adjustment and walk-through entry design simplify access and positioning, keeping workouts efficient in busy facilities. The selectorized resistance system features Nautilus’ patented Lock N Load® weight selection, allowing quick, secure changes without interrupting training flow. With its space-efficient footprint, durable construction, and dual-exercise capability, the Nautilus Instinct Biceps Curl / Triceps Extension is ideal for gyms, studios, hotels, and circuit-training environments looking to maximize versatility with minimal equipment. Features Dual-function design for biceps curls and triceps extensions Simple, easy-to-understand instructional placard Multi-position hand grips for varied arm training Adjustable seat with easy-up ratcheting system Walk-through frame for safe, convenient entry and exit Removable wear strap to extend upholstery life Cable-driven resistance system for smooth operation Rubber feet for floor protection and stability Patented Lock N Load® weight selection system Technical Specifications Machine Type Dual-Function Arm Machine (Biceps Curl / Triceps Extension) Width 39 in / 99 cm Length 52 in / 132 cm Height 55 in / 140 cm Weight Stack 190 lb / 86 kg Overall Machine Weight 395 lb / 180 kg Shipping Weight 463 lb / 210 kg Drive System Cable-driven transmission