Greenify your commute
Prioritizing comfort, convenience, and ease of use, the SDREAM Ur is designed to excel in urban environments.
Fast is fun
With a powerful brushless DC motor, the Ur is capable of reaching fast speeds on electric power alone
Lightweight magnesium frame
A rust-resistant magnesium alloy frame helps the Ur weigh in at well under 50 lb with battery installed
Downsize in seconds
Advanced folding mechanism with built-in magnets takes just seconds to collapse the bike down to a third of its size
Last-mile mogul
Folding pedals create a slimmer profile while a caster wheel lets you more easily bring the folded bike with you indoors or on public transport
Designed to fit your lifestyle
Li-ion battery is integrated in the seat post can be removed for charging at home and theft deterrence, or charged right on the bike
More time riding, less time charging
With a 4 hour charge charge time providing up to 38 miles of range means the Ur fits your schedule, not the other way around
Smart LCD display
Water- and dust-proof display provides battery info, electric assist level, speed, and trip metrics at a glance
Enjoy the ride
Patented center hub vibration damping suspension allows the UR to neutralize 95% of vibration, even on rough terrain
Ur 500X Compact urban cruiser |
X 750S Fat tire all-terrain beast |
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Model Number | BU50A2 | BX75A4 |
Color | Mint Green, Lead Gray, Crimson Red | Charcoal Gray, Light Olive |
Frame Material | Magnesium Alloy | Aluminum alloy |
Motor Type | 500W rear hub motor | 750W rear hub motor |
Motor Control | Thumb Throttle | Twist Grip Throttle |
Riding Modes | 5-level electric assist | 5-level electric assist |
Maximum Electric Assist Range | Up to 38 mi (60 km), depending on pedal input | Up to 50 mi (80 km), depending on pedal input |
Pedal Sensor | Torque Sensor | Speed Sensor |
Handlebar Display | LCD Display | 3.5” LCD Display, with USB charging port |
Battery | 36V / 7.8Ah 280Wh lithium-ion battery | 48V / 15Ah 720Wh lithium-ion battery with Samsung cells |
Charging time | 4 hours (2.5 hours with optional fast charger) | 5 hours (3.5 hours with optional fast charger) |
Shifter | Shimano 7-speed | Shimano 7-speed |
Brakes | Hydraulic disk, front and rear | Mechanical disk brakes |
Wheels | 20″ spoke wheels | 20″ aluminum alloy wheels |
Tires | 20" x 2.125” tires | 20" x 4” fat tires |
Suspension | Rear suspension | Front and rear suspension |
Folding Method | Frame folding | Frame folding |
Folded size (Length x Width x Height) |
27.6" x 15.0" x 30.3" (90 cm x 38 cm x 77 cm) |
40.9” x 20.9” x 28.7” (104 cm x 53 cm x 73 cm) |
Weight | 46.5 lb (21.1 kg), including battery | 76.7 lb (34.8 kg), including battery |
Body length | 58.6 in (149 cm) | 68.9 in (175 cm) |
Maximum rider weight | 220 lb (100 kg) | 265 lb (120 kg) |