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.
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
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
Use Classification
Full commercial use
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