Orthopedic Belt
Get maximum shock absorption and comfort with this extra-thick orthopedic belt.

Patented Heart Rate Control™ (HRC™) System
With our patented Polar® Wireless-ready HRC™ System, you select your target heart rate and the HRC™ System automatically adjusts both incline and speed to help you maintain that heart rate. This allows you to train efficiently and safely, maximizing every workout without over-training or under-training.

Patented Cruise Control
Allows automatic movement from any program into Heart Rate Control™ with no break in your exercise routine.

The SOFT Select System
The SOFT Select shock absorption system is designed to cushion the initial impact of your footstrike, and then transfer your foot to a firm, secure surface as you push-off. You can use the side-mounted lever to choose from 12 different softness settings.

Extra wide, extra long 22” x 60” running surface
There’s plenty of room to stretch your legs with this over-sized tread belt, which is the largest we offer in a home treadmill.

Eighteen pre-programmed workouts
Train with our standard pre-set programs: Weight Loss, Speed Interval, C/V Workout, Hill Interval, each with 9 levels of intensity. The Z5.5 HRCO™ also comes with 5 pre-set target HRC™, 4 distance-based HRC™ and 5 interval HRC™ programs, and will remember 3 custom programs you design yourself as well.

Advanced LCD Control Panel
The Z5.5 HRCO™’s 10 x 28 matrix LCD display shows Elapsed Time, Distance, Pace, Heart Rate, Incline, Time Remaining, Speed, Calories, METs, and Target Heart Rate when in HRC™ mode.

3.0 hp Continuous Duty Motor
You’ll experience smooth, whisper-quiet operation because our treadmill motor is precisely balanced with its key corresponding drive system components.

Rock-Solid Frame
The True Z5.5 HRCO™ Series has a heavy-gauge robotically welded steel frame for exceptional stability, durability and performance.