UBK 615 Upright Bike Assurance™ Series

The new, self-powered UBK 615 upright bike features custom-designed handlebars with integrated handheld heart rate for maximum comfort and efficient workout experience. Easy seat adjustment, redesigned saddle for riding comfort, and improved knee over pedal spindle (KOPS) geometry for efficient pedaling mean a smooth, comfortable workout.


Equipment Features
CoversCovers are attached with minimal hardware and can be removed without taking off the pedals or cranks.
Transport WheelsIntegrated
StorageIntegrated reading rack
Cable ManagementOptional
Resistance System
Drive SystemThe single stage drive system is designed to yield smooth, quiet operation and a consistent resistance progression.
Belt DriveBelt drive for smoother, quieter operation and reduced maintenance.
Crank3-piece compact crank assembly tightens positively, reducing the need for periodic adjustments. The 170 mm crank arm accepts any standard road or mountain bike pedal.
3-Phase Generator3-phase generator / eddy current resistance system requires no backup battery in order to efficiently power the bike.
Resistance Levels25
Minimum Watts22 (level 1 at 20 RPM)
Maximum Watts500 (level 25 at 150 RPM)
Console Features
Console TypeStream-lined LED display
Tactile Dome KeysYes
Numeric KeypadYes
Units SelectionMetric or U.S. Standard
Preset Workouts6 programs accessed directly by 6 buttons: Manual Interval Basic Heart Rate Control Weight Loss Random Hill Climb
FitLinxx/CSAFE CompatibleYes
Maximum Pause Time30 seconds
Maximum Workout TimeUnlimited
Console Language(s)English, Dutch, German, Spanish, French, Portuguese, Italian, Romanized Russian
EntertainmentOptional entertainment cap/wireless receiver
Heart Rate Monitoring
TelemetryIntegrated telemetry heart rate reads heart rate from a user’s heart rate chest strap.
SmartRate®Yes, displays when the exerciser’s heart rate is in the fat burn, cardio or peak target zone.
Heart Rate Sensor AdvisoryThe heart rate and SmartRate® features are intended for reference only. They may not be accurate for every user or at every intensity and are not intended for use as a medical device. Please read your owner’s manual and visit www.precor.com/en-us/customer-service/faq
Equipment Specifications
BiomechanicsTo achieve proper pedaling biomechanics, the seat post angle and seat post offset from the crank are key to efficient pedaling and reduced shear force on the knee. The seat post angle is 74 degrees with a 5-inch (13 cm) offset from the crank axle. This places the forward knee directly over the ball of the foot (or pedal spindle) when the pedals are in a horizontal position.
HandlebarsOver-molded handlebar design offers the user three comfortable riding positions: upright, cruising and road. In the road position, the ergonomic-shaped handlebars position the wrists in a natural, neutral position. The optimum width of the handlebars provides stability and comfort along the entire forearm. The overall width of the handlebars is similar to indoor cycling bikes, which is narrower than most stationary bikes. This places the user in better ergonomic position, with the forearms more directly under the shoulders. In the cruising position, the handlebar is more comfortable on the user’s hands. Touch heart rate is integrated into the upright position.
SeatImproved, ergonomic saddle design with comfort groove is injection-molded polyurethane with custom density for optimum riding comfort. 10.5 inches (27 cm) width quickly tapers to a narrow nose for improved riding comfort.
Seat AdjustmentFamiliar pop-pin seat adjustment allows the user to easily change the seat to their desired height.
Foot PedalsOver-sized, single-sided pedals with integrated pedal strap comfortably accommodates feet of all sizes, which allows proper pedaling form. The weighted pedals allow for easy placement of foot on the pedal.
Bearings and Pivot PointsPedal axles and bearings are designed for smooth operation and exceptional service life.
FrameTwo-step powder-coating process applies rust-resistant undercoat and cosmetic topcoat to steel frame.
Maximum User Weight (lbs / kg)Tested up to 350 lbs / 159 kg
User Height Range (inches / cm)58 – 78 inches / 147 – 198cm
Equipment Dimensions and Weight
Length46 inches / 117 cm
Width21 inches / 53 cm
Height57 inches / 146 cm
Height with PVS70 inches / 178 cm
Equipment Weight155 lbs / 70 kg
Crank Width19
User Height Range (inches / cm)58 – 78 inches / 147 – 198cm
Power Requirements
Optional Power SupplyOptional power supply available if long time periods of no use or need display to be continuously lit longer than 30 seconds after workout ends.
Personal Viewing Screen (PVS)Powered
Frame and WeldmentsLifetime
Parts Warranty10 years
Wear Items10 years
Labor1 year


Manufacturer reserves the right to change or alter specifications at any time. Precor protects its product by vigorously enforcing its patent, trademark, copyright and other applicable intellectual property rights in the USA and in other countries. Precor is a registered trademark of Precor Incorporated.