Jupiter Bikes Defiant
The Jupiter Bikes Defiant is an electric bike with a 48V, 10.4Ah pack, a stated range of 40 miles, a 750 watt rating, a 20" x 4" wheel and a weight of 55 lbs.
Last updated: 9 November 2026
Motor and performance
- Continuous rated power
- 750 watt
- Claimed range
- 40 miles
“48 volts matched with a 1130 watt (peak) 750 watt (sustained) motor delivers more power when you need it.”
Source: jupiterbike.com/defiant
“Max Range 30 miles 30 miles 40 miles”
Source: jupiterbike.com/compare-electric-bikes
Battery and charging
- Battery
- 48V, 10.4Ah
- Case material
- Aluminum
“Battery: 48V, 10.4Ah Li-Ion”
Source: jupiterbike.com/defiant
“Frame Material Magnesium Magnesium Aluminum”
Source: jupiterbike.com/compare-electric-bikes
Frame and components
- Gearing
- 7 Speed
- Wheel size
- 20" x 4"
“Drivetrain Single Speed 6 Speed 7 Speed”
Source: jupiterbike.com/compare-electric-bikes
“Wheel Size 16" x 2.5" 20" x 2" 20" x 4"”
Source: jupiterbike.com/compare-electric-bikes
Size and fit
- Weight
- 55 lbs
- Wheelbase
- 42"
- Overall dimensions
- 38" x 22" x 28"
“Weight 50 lbs 48 lbs 55 lbs 70 lbs”
Source: jupiterbike.com/compare-electric-bikes
“Wheel Base 38.5" 44" 42" 42"”
Source: jupiterbike.com/compare-electric-bikes
“Folded (L x W x H) 31" x 18" x 27" 36" x 17" x 25" 38" x 22" x 28"”
Source: jupiterbike.com/compare-electric-bikes
Sources
- Defiant Folding Electric Fat Tire Bike - JupiterBikeArchived document
Source: jupiterbike.com/defiant
Retrieved October 23, 2026
- Compare Electric BikesArchived document
Source: jupiterbike.com/compare-electric-bikes
Retrieved November 8, 2026