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2023 Surface 604

Boar Explorer

A 27.5″ rigid fat e-bike with mid-range components.
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Manufacturer Price

$2,699
Weight7.6 lbs (frame)  
SuspensionRigid
ForkAluminum
Wheels27.5″ Aluminum
Drivetrain1 × 9
GroupsetAlivio
MotorBafang 500W 80Nm hub-drive
Battery672Wh
BrakesTektro Hydraulic Disc
Learn about Surface 604
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Insights
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

27 mph

Boar Explorer

23 mph

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Highest gear

(descending)

Reviews
Electric Bike Review
Surface 604 Boar Hunter Review - Prices, Specs, Videos, Photos

Feb 2020

Price: $2499.00 | Model Year: 2020 A purpose-built fat tire electric bike designed with hunters and campers in mind. The frame and fork are painted with matte Kryptek camouflage to blend into wilderness environments while nearly all accessory hardware is black. Comes with a sturdy rear rack and front basket system, both capable of supporting pannier bags (up to four in total). Extra large 26

Observations
  • A purpose-built fat tire electric bike designed with hunters and campers in mind. The frame and fork are painted with matte Kryptek camouflage to blend into wilderness environments while nearly all accessory hardware is black. Comes with a sturdy rear rack and front basket system, both capable of supporting pannier bags (up to four in total)

  • Extra large 26" x 4.5" fat tires provide traction and float, lower the PSI to navigate on loamy terrain or soft sand. Powerful fat-bike specific Bafang hub motor offers 80 newton meters of torque and is activated quickly and naturally through a rear-mounted TMM4 torque sensor. You get five levels of pedal assist and trigger throttle with full support at all times... Bike can be unlocked to exceed 20mph for off-road use

  • Available in two frame sizes for improved fit. Optional battery capacity upgrade is only $200, and both packs are cross compatible with all other 2020 Surface 604 models. Optional custom fit 120mm wide steel fenders look great and keep you dry. Large color LCD display is intuitive and the button pad is well thought out, it dims when the headlight is activated. Nice 180mm hydraulic disc brakes and 15mm quick release thru-axle

  • No chain guide, narrow-wide chainring, or slap guard here. Front rack is fork-mounted and impacts steering, could dump over when parking or making sharp turns. Straight 1-1/8" headset is less compatible with aftermarket suspension forks. The bike is fairly heavy and the throttle isn't as powerful as the highest pedal assist level, which surprised me a bit

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Specs
Build
Fork

Proprietary design, straight steerer Custom 6061 Aluminum fork

Bottom Bracket

SAMOX Sealed Bottom Bracket

Headset

SAMOX Tapered with Sealed Bearings 1 1/8" - 1 1/2"

Stem

SURFACE604 3D forged alloybarbore 31.8mm, height 45mm (New)

Handlebar

PROMAX aluminum, 670mm wide, 6° sweep35mm rise, 31.8mm clamp diameter

Saddle

SR Selle Royal Nebula

Seatpost

Rigid Aluminum Alloy

TypeRigid

Pedals

WELLGO Platform, with Die Casting Body

Grips

Flat Rubber

Groupset
Rear Derailleur

SHIMANO ALIVIO 9-Speed Drivetrain

Crank

SAMOX 36T front sprocket, 170mm crank arms

Shifters

SHIMANO ALIVIO

Cassette

SRAM 9-Speed 11-34T

Chain

KMC X10

Brakes

TEKTRO AURIGA Hydraulic Disc Brakes, Post Mount180mm rotor with Motor Inhibitors, 180mm Front/Rear x 2.34mm Thick

TypeTektro Hydraulic Disc

Wheels
Rims

27.5

Front Hub

Surface604 Aluminum

Electric Components
Motor

Type: Hub, Output: 500, Details: High Torque 500W (Peaks At 750W) Fat Bike Specific Bafang geared hub motor, 80Nm of Torque, Wire Harness: 30Ah, can handle up to 120C current (upgraded)

Battery

Watt Hours: 672 Wh, Details: Included: 48V 14Ah / 672WhSamsung lithium-ion 18X650mm cells

Display

SURFACE604 Color LCD Display with USB JackBigger display: 3.5" for 2023

Accessories
Lights

BUCHEL SHINY 120 LED Headlight

Rider Notes
Riders Also Viewed

First added October 14

Last updated November 11

Not listed for 570 days