Cycles Comparison
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| Model | C521U | C521R | C55U | C55R |
| Display | Dot matrix with LEDs | Dot matrix with LEDs | White backlit LCD | White backlit LCD |
| Program | Interval, Random, Hill, Track, *ZoneTrainer™, Weight loss HRC, Cardio HRC, 4 USER IDs |
Interval, Random, Hill, Track, *ZoneTrainer™, Weight loss HRC, Cardio HRC, 4 USER IDs |
Random, Track, Interval, Hill, 4 USER IDs |
Random, Track, Interval, Hill, 4 USER IDs |
| Date Readouts | Speed, Watts, Calories, Cal/hr, RPM, Distance, Time, Workout level, Heart rate, *CardioAdvisor™, *ActiveZone™ |
Speed, Watts, Calories, Cal/hr, RPM, Distance, Time, Workout level, Heart rate, *CardioAdvisor™, *ActiveZone™ |
Calories, RPM, Time, Workout level, Heart rate |
Calories, RPM, Time, Workout level, Heart rate |
| *Heart Rate Control | Yes | Yes | ||
| Contact Heart Rate | Optional | Optional | ||
| Telemetry Heart Rate | Yes | Yes | Yes | Yes |
| Resistance System | ECB, 20 levels |
ECB, 20 levels |
Permanent magnet, 14 levels |
Permanent magnet, 14 levels |
| Low-Profile Shroud | Yes | Yes | ||
| *Step-Through Design | Yes | Yes | ||
| *Comfort Dri™ Seatback | Yes | |||
| Adjustable Seatback | Yes | |||
| Fore/ Aft Seat Adjust | Yes | Yes | Yes | |
| Up/ Down Seat Adjust | Yes | Yes | ||
| Self-Generating | Yes | Yes | ||
| Max User Weight | 180 kgs/ 400 lbs. | 180 kgs/ 400 lbs. | 150 kgs/ 330 lbs. | 150 kgs/ 330 lbs. |
| Dimensions | 45.2" x 23.6" x 54.7" 1150 x 600 x 1390mm |
66" x 25.9" x 51" 1680 x 660 x 1300mm |
45.2" x 23.6" x 54.7" 1150 x 600 x 1390mm |
66" x 25.9" x 51" 1680 x 660 x 1300mm |
| Net Weight | 55 kgs/ 122 lbs. | 71 kgs/ 157 lbs. | 44 kgs/ 97 lbs. | 61 kgs/ 135 lbs. |
| Box Dimensions | 54.3" × 17.9" × 33.4" 1380 × 455 × 850mm |
67.7" × 18.7" × 30.7" 1720 × 475 × 780mm |
54.3" × 17.9" × 33.4" 1380 × 455 × 850mm |
67.7" × 18.7" × 30.7" 1720 × 475 × 780mm |
| 20' / 40' Qty | 48 / 99 Sets | 36 / 74 Sets | 48 / 99 Sets | 36 / 74 Sets |
| Model | C521U | C521R | C55U | C55R |
