Step-through Design
The RBK 615 recumbent bike feature a step-through design with a very low step-over height.

Ergonomics
The riding cockpit is designed with sound ergonomics. The seat pads are angled for optimal comfort, maximum lower-back support and minimal interference with the movement of the user’s legs. The console is mounted at an optimal viewing angle, with the machine controls within easy reach.

Handlebars
The console handlebars help with entry and exit, while the riding handle bars provide optional hand and arm positioning and heart rate monitoring.

Seat
The new, compact-moulded seat back features a “floating” suspension system that allows the seat back to move with the user for unsurpassed comfort. The ergonomic, curved design and ample ventilation further enhance user comfort, and the polypropylene material is virtually indestructible.

Biomechanics
To achieve proper pedaling biomechanics, Precor designed the recumbent bike to maintain some of the advantages developed for the upright bike. That means setting the angle of the seat rail with an offset from the crank to aid with efficient pedaling and reduced shear force on the knee. The seat rail angle is at 15 degrees with a slight offset from the crank axle. This places the knee directly over the ball of the foot (or pedal spindle) when the pedals are in the 2 and 8 o’clock positions.

Bearings
Pedal axles and bearings are designed for smooth operation and exceptional service life.

Pedals
Oversized, single-sided pedals with integrated pedal strap comfortably accommodate feet of all sizes, which allows proper pedalling form. The weighted pedals allow for easy placement of the foot on the pedal.

Frame
Two-step powder-coating process applies rust-resistant undercoat and cosmetic topcoat to steel frame.

Seat Adjustment
The simple seat adjustment allows the user to change the position of the seat with one hand, either whilst on or off the bike.

Covers
Covers are attached with minimal hardware and can be removed without taking off the pedals or cranks.