| | Model | UB521M | C572r | C572u | C532r | C532u | C521m | C521r | C521u |
| | Dimensions (LxWxH) | 69.3" x 31.5" x 55" | 71.75" x 25.875" x 52.625" | 45" x 23.5" x 55.25" | 66" x 26" x 51" | 40" x 22" x 56" | 67" x 27" x 50" | 66" x 26" x 51" | 40" x 22" x 56" |
| | Unit Weight | 247 lbs. | 240 lbs. | 161 lbs. | 156 lbs. | 121 lbs. | 183 lbs. | 156 lbs. | 121 lbs. |
| | Resistance Source | Electro-magnetic | Electro-magnetic | Electro-magnetic | Electro-magnetic | Electro-magnetic | Electro-magnetic | Electro-magnetic | Electro-magnetic |
| | Power Source | 110v | Self-generating | Self-generating | Self-generating | Self-generating | 110v | Self-generating | Self-generating |
| | Step Through | Yes | Yes | N/A | Yes | N/A | Yes | Yes | N/A |
| | Low-Profile Shroud | N/A | N/A | Yes | N/A | Yes | N/A | N/A | Yes |
| | Adjustable Seat Back | N/A | Yes | N/A | Yes | N/A | Yes | Yes | N/A |
| | Fore and Aft Seat Adjust | Yes, 20 positions | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| | Resistance Levels | 20 (bi-directional) | 20 | 20 | 20 | 20 | 20 (bi-directional) | 20 | 20 |
| | Programs | Custom Interval, Random, Hill, Track, Iso Kinetic, Iso Strength, Custom HR, Cardio/Wt Loss | Manual/Track, Random, Fit Test, Cardio/Wt Loss, Interval (1:1, 1:2, 2:2), Plateau, Fat Burn, Custom HR, Quick Start | Manual/Track, Random, Fit Test, Cardio/Wt Loss, Interval (1:1, 1:2, 2:2), Plateau, Fat Burn, Custom HR, Quick Start | Hill (x3), Interval (x2), Manual/Track, Random, Weight Loss HRC, Cardio HRC, ZoneTrainer™, Plateau, Quick Start, 4 User IDs | Hill (x3), Interval (x2), Manual/Track, Random, Weight Loss HRC, Cardio HRC, ZoneTrainer™, Plateau, Quick Start, 4 User IDs | Custom Interval, Random, Hill, Track, Iso Kinetic, Iso Strength, Custom HR, Cardio/Wt Loss | Hill (x3), Interval (x2), Manual/Track, Random, Weight Loss HRC, Cardio HRC, ZoneTrainer™, Quick Start, 4 User IDs | Hill (x3), Interval (x2), Manual/Track, Random, Weight Loss HRC, Cardio HRC, ZoneTrainer™, Quick Start, 4 User IDs |
| | Touch-N-Go Programs | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| | Data Readouts | Workout level, Calories, Time, RPM, Distance, METS, Watts, Speed, Actual heart rate, Target heart rate | Calories, Distance, Time, RPM, Calories per hour, METs, Watts, Speed, Percentage of Goal Completed, Workout Level, Actual Heart Rate, Weight Loss Target Heart Rate, Cardio Conditioning Target Heart Rate | Calories, Distance, Time, RPM, Calories per hour, METs, Watts, Speed, Percentage of Goal Completed, Workout Level, Actual Heart Rate, Weight Loss Target Heart Rate, Cardio Conditioning Target Heart Rate | Speed, Watts, Calories, Calories/hr, RPM, Distance, Time, Resistance Level, Heart Rate, Target Heart Rate | Speed, Watts, Calories, Calories/hr, RPM, Distance, Time, Resistance Level, Heart Rate, Target Heart Rate | Workout level, Calories, Time, RPM, Distance, METS, Watts, Speed, Actual heart rate, Target heart rate | Speed, Watts, Calories, Calories/hr, RPM, Distance, Time, Resistance Level, Heart Rate, Target Heart Rate | Speed, Watts, Calories, Calories/hr, RPM, Distance, Time, Resistance Level, Heart Rate, Target Heart Rate |
| | Display | Dot matrix and LEDs | Dot matrix and LEDs | Dot matrix and LEDs | Dot matrix and LEDs | Dot matrix and LEDs | Dot matrix and LEDs | Dot matrix and LEDs | Dot matrix and LEDs |
| | ActivZone™ | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| | CardioAdvisor™ | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| | Entertainment Bracket Compatible | No | Yes | Yes | Yes | Yes | No | Yes | Yes |
| | Max User Weight | 500 lbs. | 500 lbs. | 500 lbs. | 450 lbs. | 450 lbs. | 450 lbs. | 400 lbs. | 400 lbs. |
| | Contact Heart Rate | No | Yes | Yes | Yes | Yes | No | No | No |
| | Telemetry Heart Rate | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| | Commercial Parts Warranty | Lifetime frame, 5 years parts | Lifetime frame, 5 years parts | Lifetime frame, 5 years parts | Lifetime frame, 5 years parts | Lifetime frame, 5 years parts | Lifetime frame, 5 years parts | Lifetime frame, 5 years parts | Lifetime frame, 5 years parts |
| | Commercial Labor Warranty | 1 year | 1 year | 1 year | 1 year | 1 year | 1 year | 1 year | 1 year |
| | CSAFE | No | Yes | Yes | No | No | No | No | No |
| | USB | Yes | Yes | Yes | No | No | No | No | No |
| | Certifications | UL1647 5th Ed. 2011, C22.2 No. 68, FCC | UL1647, C22.2 No. 68, FCC | UL1647, C22.2 No. 68, FCC | UL1647, C22.2 No. 68, FCC | UL1647, C22.2 No. 68, FCC | UL1647 5th Ed. 2011, C22.2 No. 68, FCC | UL1647, C22.2 No. 68, FCC | UL1647, C22.2 No. 68, FCC |
| | Power Requirements | 110V | SELF-POWERED; Fuse: 2A/250V (5*20mm FAST) | SELF-POWERED; Fuse: 2A/250V (5*20mm FAST) | SELF-POWERED | SELF-POWERED | 110V | SELF-POWERED | SELF-POWERED |
| | Use Profile | | High-use facility 24/7 | High-use facility 24/7 | No fees facility | No fees facility | No fees facility | No fees facility | No fees facility |
