Surface 604 Boar Explorer Electric Mountain Bike
Best fat-tire e-bike for off-road adventurers seeking smooth, responsive power.
This fat-tire beast bridges the gap between a rugged mountain bike and a refined commuter. Its torque-sensing system delivers power so naturally you’ll forget it’s electric, though the heavy frame means it’s built for conquering trails rather than nimble city maneuvering.
$2399.00
at
Bike Attack
Who it's for
- Adventurers riding on snow, sand, or loose, rugged trails
- Commuters and explorers tackling steep hills and heavy loads
- Practical riders needing a fully equipped, ready-to-go utility bike
Who should skip it
- Budget-conscious owners wanting affordable, easy-to-find replacement parts
- Riders needing a lightweight bike for transport or manual pedaling
- Urban commuters prioritizing speed and maximum battery range
Performance breakdown
Pedal Assist Responsiveness
Torque sensing technology delivers power that feels intuitive and remarkably natural.
Off-Road Traction
Massive fat tires provide exceptional grip on loose dirt and sand.
Stopping Power
Hydraulic disc brakes offer reliable, confident control in challenging trail conditions.
Frame Durability
The 6061 aluminum alloy construction balances rugged strength with manageable weight.
Drivetrain Versatility
SRAM 9-speed gearing handles steep climbs and varied terrain with ease.
Interface Usability
Large display is easy to read, though the design feels slightly dated.
Key Specs
Motor
High torque 500W (Peaks At 750W) Fat Bike Specific Bafang geared hub motor
Drive Mode
Drop Out Torque sensing pedal assist with a throttle
Torque
80Nm
Top Speed
20mph (Class 2) / 28mph (Class 3 Unlocked)
Battery
48V 20Ah / 960Wh (Samsung lithium-ion cells)
Battery Range
Up to 65mi (105km)
Battery Charge Time
3-4 Hours
Controller
SURFACE604 Designed 12 MOS 48V 500W 25Ah, Smart
Drivetrain
SRAM X5 9-speed
Cassette
SRAM 9-speed 12-34T
Still have a question?
Ask Metto anything about the Surface 604 Boar Explorer Electric Mountain Bike before you decide.
