Find out what size Fits you

A rider’s height is the best determinant for size with S/M (17.5” frame) optimal for people 5’2” to 5’7” and M/L (19” frame) ideal for those 5’8” to 6’6”.

Size Guide

S/M17.5”5’2” to 5’7”
M/L19”5’8” to 6’6”
2016 Surface 604 Boar Electric Fat Bike Black
2016 Surface 604 Boar Electric Fat Bike Black
2016 Surface 604 Boar Electric Fat Bike Black

Boar Electric Fat Bike


Starting at $220 per month. Learn More

A fat-tire electric bike designed to tackle the most rugged terrain. Built with a powerful motor and quality brand name components (SRAM, FSA, Tektro, Kenda and Bafang), the Boar offers uncompromising performance at outstanding value.

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SRAM Fat Bike Crank
FSA Full Speed Ahead
Tektro Fat Bike Hydraulic Disc Brakes
Bafang Electric Motor
RST Suspension Fat Bike Fork
Kenda Fat Bike Tires


1. Low-Profile Battery Placement

The Boar’s aluminum frame has been completely custom designed in Canada by Surface 604. It’s been designed for maximum stiffness and minimum weight with clean, sexy lines. Most importantly, we’ve placed the battery (discreetly) in the down tube, keeping the centre of gravity low – lower than any other fat e-bike on the market. Add to that the short wheelbase and you’ve got an electric fat bike that rides like a Ducati motorcycle.

2. Ultra-quiet, High Torque Bafang Geared Hub Motor (350w)

The Boar comes equipped with Bafang’s next generation geared hub motor 350w. These new motors are incredibly silent compared with anything else on the market, weigh less and are so low-profile it’s hard to tell it’s electric. Geared hub motors have the advantage over direct drive motors in that they deliver high torque and are resistant to overheating when running at lower RPM’s. This is well-suited to carrying heavy loads up hills at slower speeds.

3. SRAM ”1 x 10” Transmission

The Boar comes standard with a SRAM 10 speed transmission (also known as a “1 x 10”), providing ample range of gearing by one of the most respected names in bike components. The 1 x 10 transmission requires no front derailleur, making shifting even more simple and also eliminating the left hand shifter. The result is a cleaner looking handlebar that provides all the gearing a rider needs for steep hills.

4. Torque Sensing Battery Management System (BMS)

Power delivery to the motor is regulated by a torque sensor in the dropout hanger that senses how much torque you apply to the pedals; the harder you pedal, the more power the electric motor provides. The result is smooth power delivery and a natural ride much like a regular bike. The torque sensor has the added benefit of acting like a Battery Management System (BMS). The power going to the motor is instantly reduced when you reduce the torque and turns off completely when you stop pedalling. The effect is greatly reduced power consumption, longer range and longer battery life.

5. Tektro Hydraulic Disc Brakes

There really is no substitute for the stopping power, progressive feel and safety of hydraulic disk brakes and that’s why they come standard on every Boar fat bike. Carrying the heavy loads that the Boar for which the Boar was designed (thanks to optional front and rear cargo racks) makes the power of hydraulic all the more necessary. Winter riding? No problem. Tektro hydraulic brakes perform well in temperatures down to – 25 C (- 15 F) with some riders reporting high performance well below that temperature.

6. Suspension Fork Compatible (RST and RockShox)

RST Renegade Suspension Fork (available as an upgrade)

The Boar has been designed to be compatible with some fat tire suspension forks (RST and RockShox) for increased comfort and improved traction and handling in rough conditions,. The new Renegade fork from RST is available as an upgrade from the Surface604 website. The Renegade is compatible with the Boar’s 15mm thru-axle hub.

7. Custom Built Cargo Racks - Front & Rear

A major advantage that electric fat bikes like the Boar have over other bikes is how well-suited they are to carrying cargo. That’s thanks to the electric assist which reduces rider effort and the fat tires that provide ridiculous stability – it really has to be experienced to be believed.

That’s why we’ve designed custom front and rear racks for the Boar that will transform your bike into a pick-up truck (hybrid powered of course!). The front rack has attachments for saddlebags (panniers) and a large platform conveniently sized to fit a 12-pack of beer. The rear rack also fits standard saddlebags (panniers) and is rated for a whopping 42kg (100lbs) of cargo.

8. Fenders - Front & Rear

For many of us, all-season riding means riding in rain and snow. We’ve designed custom aluminum fenders for the Boar that makes riding a joy in all conditions. They come in black, they’re durable and are easy to install.


Surface 604 Boar Frame Geometry
TTH.Top Tube Length (mm)593.0620.0
HTA.Head Tube Angle (deg)70.070.0
HTL.Head Tube length (mm)145.0145.0
STA.Seat Tube Angle (deg)73.073.0
STL.Seat Tube length (mm)444.5482.6
CSL.Chainstay Length (mm)455.0455.0
WB.Wheelbase (mm)1107.01134.0


Drive System

Bafang fat bike specific motor


350w+ (peaks at 750w)




36V 13.3Ah / 478Wh Samsung Lithium Ion

Charge Time

6 hours for a full charge from empty

Battery Life

Up to 50mi (80km) depending on mode

Weight Including Battery

57lbs (26kg)

Frame Type

Tapered headtube, custom reinforced battery mounts, internal cable routing, post mount brakes

Frame Material

6061 Aluminum Alloy

Frame Colours

Black, white, green


Proprietary design, tapered steerer, 150mm x 15mm thru-axle


FSA tapered 1 1/8″- 1 1/2″


Wellgo platform

Top Speed

20mph (32km/h)


26″ x 80mm single wall aluminum (standard)
26″ x 100mm single wall aluminum (upgrade option)

Front Hub

150mm x 15mm thru-axle sealed bearing


Tektro Auriga hydraulic disc, post mount, 160mm rotor


Promax aluminum, 35mm rise, 670mm wide, 9 degree sweep, 31.8mm


Full length 122mm, black colour

Rear Derailleur

SRAM X5 10-speed

Shift Levers

SRAM X5 trigger shift


SRAM PowerGlide™ 1070, 11-36T




FSA 36T, Q-factor 209 Fat Bike Crankset

Bottom Bracket

FSA MegaExo 19 integrated, sealed cartridge

Seatpost Diameter



26″ x 4″ Kenda Juggernaut (standard)
26″ x 4.5″ Kenda Juggernaut Sport (upgrade option)

Sizes Available

Small-Medium: 17.5″
Medium-Large: 19″

Standover Height

Small-Medium: 730mm
Medium-Large: 760mm

Weight23 kg
SKU: S604BOAR Category: Tag: