Spirit 4.0U Upright BikeCompact. Adjustable. Rehab Ready Upright Cardio. The Spirit 4. 0U Upright Bike is designed for rehabilitation environments, active aging users, and home gyms needing a compact, stable, and easy to use upright cycle. With 40 resistance levels, accessible step through design, and fully adjustable seating and handlebars, it supports users with varying mobility levels and therapy requirements. The oversized pedals with fast latching straps help secure the