203-489-6699
JupiterBike Defiant ST Electric Bike
Full Suspension Comfort Meets High-Performance Power
Watch the Defiant ST in Action
The JupiterBike Defiant ST Electric Bike is built for riders who demand maximum comfort, power, and versatility. Powered by a robust 750W motor (1130W peak) and a 48V system, the Defiant ST delivers strong acceleration, impressive torque, and reliable performance across all terrains.
Designed for ultimate ride comfort, the Defiant ST features a full suspension dual shock system that absorbs bumps and rough terrain, giving you a smoother and more controlled riding experience whether you're on city streets or off-road trails.
Equipped with an upgraded 13.2Ah battery, this model offers extended range capabilities, making it ideal for longer rides and daily commutes. Premium components like hydraulic disc brakes, leather grips, and a MIK-compatible rear rack enhance both performance and convenience.
Key Features
- 750W Motor (1130W Peak) – High torque for hills and rough terrain
- 48V 13.2Ah Battery – Extended range for longer rides
- Full Suspension (Front & Rear) – Maximum comfort and control
- Hydraulic Disc Brakes – Smooth, powerful stopping performance
- 20" x 4" Fat Tires – Stability and traction on all terrains
- Leather Comfort Grips – Premium feel and better control
- LCD Display – Tracks speed, distance, and battery life
- MIK Rear Cargo Rack – Ready for cargo and accessories
- Full Fenders & Mudguards – Protection in all weather conditions
Performance & Comfort
750W Power
The 48V motor system with 1130W peak output provides fast acceleration and strong climbing power, making every ride effortless and enjoyable.
Dual Shock Suspension
The full suspension system absorbs impacts from rough terrain, delivering unmatched comfort and stability on any ride.
Extended Range
With a larger 13.2Ah battery, the Defiant ST allows you to travel farther with confidence—perfect for long-distance rides and daily commutes.
Premium Upgrades
From hydraulic brakes to leather grips and a heavy-duty MIK rack, every component is designed for performance, durability, and convenience.
Additional Features
- All-terrain 4" fat tires for sand, snow, and trails
- Concealed removable battery with key lock
- Bright 5-speed LCD display
- 4-bulb LED headlight for improved visibility
- Shimano 7-speed drivetrain
- Quick-release front wheel for easy transport
- Dual spring comfort saddle for long rides
Defiant Electric Bike Comparison
| Feature | Defiant | Defiant PRO | Defiant ST |
|---|---|---|---|
| Price | $1699 | $1899 | $1999 |
| Wheel | 20" x 4" Spokes | 20" x 4" Spokes | 20" x 4" Spokes |
| Max Speed | 20 mph (adjustable to 28 mph) | 20 mph (adjustable to 28 mph) | 20 mph (adjustable to 28 mph) |
| Max Range | 40 miles | 40 miles | 50 miles |
| Battery | 48V 10.4Ah | 48V 10.4Ah | 48V 13.2Ah |
| Suspension | None | Front | Front & Rear |
| Drivetrain | 7 Speed | 7 Speed | 7 Speed |
| Motor | 1130W Peak / 750W Sustained | 1130W Peak / 750W Sustained | 1130W Peak / 750W Sustained |
| Throttle | Twist | Thumb | Thumb |
| Derailleur | Shimano Tourney | Shimano Altus w/ Paddle Shifter | Shimano Altus w/ Paddle Shifter |
| Brakes | Mechanical | Hydraulic (with brake light) | Hydraulic |
| Fender | Sport | Full City Style | Full City Style |
| Grips | Rubber | Leather | Leather |
| Rear Rack | Optional | MIK Compatible Included | MIK Compatible Included |
