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Surface 604 Boar Hunter Review

Surface 604 Boar Hunter Electric Bike Review

Surface 604 Boar Hunter Semi Integrated Reention Downtube Battery Pack With Usb Port

Surface 604 Boar Hunter Bafang Fat Geared Hub Motor 500 Watt

Surface 604 Boar Hunter Handlebar Shifters Tektro Auriga Hydraulic Brake Levers

Surface 604 Boar Hunter Bafang Color Lcd Display Panel With Light Sensor

Surface 604 Boar Hunter Trigger Throttle And Button Pad Near Left Grip

Surface 604 Boar Hunter Sturdy 15mm Thru Axle With Quick Release

Surface 604 Boar Hunter Front Rack With Basket And Spanninga Axendo 60 Headlight Two Beam

Surface 604 Boar Hunter Kenda Juggernaut 26x4 5 Fat Tires 180mm Disc Brake Rotors

Surface 604 Boar Hunter Adjustable Kickstand 170mm Crank Arms Wellgo Platform Pedals

Surface 604 Boar Hunter Bolt On Rear Rack With Slats And Pannier Hangers

Surface 604 Boar Hunter 34 Tooth Chainring Hollow Spindle Bottom Bracket

Surface 604 Boar Hunter Optional 120mm Steel Fenders

Surface 604 Boar Hunter Sram X5 11 34 Tooth 9 Speed Cassette

Surface 604 Boar Hunter Sram X5 Derailleur 9 Speed Drivetrain

Surface 604 Boar Hunter Torque Sensor Plate With Wire Inside Rear Dropout

Surface 604 Boar Hunter Electric Fat Bike With High Speed Mode

Surface 604 Boar Hunter 48 Volt 14 Amp Hour Battery Pack

Surface 604 Boar Hunter 2 Amp Ebike Charger

Surface 604 Boar Hunter Stock High Step Kryptek Camo

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

Make:

Surface 604

Model:

Boar Hunter

Price:

$2,499 ($2,699 for 14ah Battery Upgrade)

Body Position:

Forward

Suggested Use:

Trail, Sand and Snow, Mountain, Bikepacking

Electric Bike Class:

Pedal Assist (Class 1), Throttle on Demand (Class 2), Moped or Motorcycle (Class 4)

Learn more about Ebike classes

Warranty:

1 Year Comprehensive, 3 Year Frame

Availability:

United States, Canada

Model Year:

2020

Total Weight:

67 lbs (30.39 kg) (72.2 As Shown with Suspension Seat Post, Fenders, and 14ah Battery Upgrade)

Battery Weight:

7 lbs (3.17 kg) (7.7lbs for 14ah Battery)

Motor Weight:

8 lbs (3.62 kg)

Frame Material:

6061 Aluminum Alloy

Frame Sizes:

17.5 in (44.45 cm)19 in (48.26 cm)

Geometry Measurements:

Medium/ Large 19" Frame: 23.75" Reach, 28" Minimum Saddle Height, 34.5" Minimum Saddle Height, 27.5" Width, 76" Length, 45.5" Wheelbase

Frame Types:

High-Step

Frame Colors:

Matte Kryptek Camo

Frame Fork Details:

Rigid Aluminum Alloy, 150mm Hub Spacing, 15mm Thru-Axle with Quick Release

Frame Rear Details:

175mm Hub Spacing, 12mm Threaded Keyed Axle with 18mm Nuts

Attachment Points:

Rear Rack Bosses, Front Rack Bosses, Fender Bosses

Gearing Details:

9 Speed 1x9 SRAM X5 Derailleur, 11-34 Tooth Cassette

Shifter Details:

SRAM X5 Triggers on Right (One-Way High Lever, Four-Shift Low Lever)

Cranks:

Samox, Q-factor 209 Fat Bike Crankset, 34 Tooth Chainring, Hollow Spindle with 100mm Sealed Cartridge Bottom Bracket

Pedals:

Wellgo Aluminum Alloy Platform with Reflectors

Headset:

FSA, Internal Cups, Sealed Cartridge, Straight 1-1/8″

Stem:

UNO, 70mm Length on S/M and 90mm Length on M/L Frame, 45° Angle, One 15mm Base, Two 10mm Spacers, One 2.5mm Spacer

Handlebar:

Aluminum Alloy Low-Rise, 680mm Length

Brake Details:

Tektro Auriga Hydraulic Disc with 180mm Rotors, Dual Piston Calipers, Two-Finger Tektro Auriga Levers with Adjustable Reach

Grips:

Flat Rubber, Black

Saddle:

Selle Royal Royalgel Nebula

Seat Post:

6061 Aluminum Alloy, Single Bolt Clamp

Seat Post Length:

350 mm

Seat Post Diameter:

30.4 mm

Rims:

Aluminum Alloy, Double Wall , 100mm Width, Punched Out, 36 Hole, Black

Spokes:

Stainless Steel, 13 Gauge Front, 12 Gauge Rear, Adjustable Nipples, Straight, Black

Tire Brand:

Kenda Juggernaut, 26" x 4.5" (116-559)

Wheel Sizes:

26 in (66.04cm)

Tire Details:

5 to 30 PSI, 0.4 to 2.1 BAR, 30 TPI, Wire Bead

Tube Details:

Schrader Valve

Accessories:

Integrated Spanninga Axendo 60 Headlight (Dual Beam LED, 60 Lux), Flick Bell on Right, Aluminum Alloy Front Rack (Removable, 25kg 55lb Max Weight, 13" x 9" Dimensions, Pannier Hangers for Front Bags), Aluminum Alloy Rear Rack (Removable, Standard Gauge Pannier Hangers and Bungee Loop at Base, 25kg 55lb Max Weight, Flat Slats on Top for Trunk Bag), Rear-Mount Adjustable Length Kickstand, Optional Steel Fenders (Black, 120mm Width), Optional Spanninga Solo Rear Light

Other:

Locking Removable Downtube Semi-Integrated Battery Pack with USB A Port (5V 1A), IP65 Water Resistant Display Panel, 1.8lb 2 Amp Charger, Maximum Weight Capacity of Bike 136kg 300lbs

Motor Brand:

Bafang RMG060.500.DC

Motor Type:

Rear-Mounted Geared Hub

Learn more about Ebike motors

Motor Nominal Output:

500 watts

Motor Peak Output:

750 watts

Motor Torque:

80 Newton meters

Battery Brand:

Samsung 18650 2600 or 3500 mAh for 10 and 14 Respectively

Battery Voltage:

48 volts

Battery Amp Hours:

10.4 ah (Optional 14ah)

Battery Watt Hours:

499.2 wh (Optional 672wh)

Battery Chemistry:

Lithium-ion

Charge Time:

6 hours (2 Hours for ~80%)

Estimated Min Range:

25 miles (40 km)

Estimated Max Range:

45 miles (72 km)

Display Type:

Surface 604 Branded Bafang DCP-18, Fixed, Backlit, 3.25" Color LCD, USB Type A Charging Port on Right Side (5V 1A)

Readouts:

Battery Percentage, Current Speed (With Infographic), Power Meter, Trip Distance, Odometer, Max Speed, Avg Speed, Trip Time, Assist Level (0-5)

Display Accessories:

Independent Button Pad near Left Grip (+, -, Light, Information, On/Off), Hold - for Walk Mode, Hold + and - for Settings Menu

Drive Mode:

Torque Sensing Pedal Assist (TMM4 Strain Sensor at Rear Dropout)

Top Speed:

20 mph (32 kph)(Unlockable to 28mph for Off-Road Use)

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Make or Model

Model Year

Body Position

Suggested Use

Frame Type

Drive Mode

Availability

Price Range

$0 (0 €)$18,000 (16,920 €)

Total Weight

0 lbs (0 kg)227 lbs (103 kg)

Top Speed

0 mph (0.0 km/hr)50 mph (80.5 km/hr)

Battery Watt Hrs

0 watt3,456 watt

Frame Size

0 in (0.00 cm)432 in (1,097.28 cm)

Motor Power

0 Newton meters250 Nm

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To run the forums, host the website, and travel, I charge a universal service fee for my reviews. This in-depth review was sponsored by Surface 604 Bikes. My goal is to be transparent and unbiased with you, this video and writeup are not meant to be an endorsement of Surface 604 products. I welcome your corrections, additions, and feedback in the comments below and the Surface 604 electric bike forums.

Observations:

Official Kryptek brand camouflage paint on the frame and fork, heavy duty custom-made racks, extra large 4.5″ fat tires, and unlockable high-speeds make this a very unique platform… especially when you consider that it’s available in two frame sizes. Very few other ebikes are so perfectly designed to fill a niche, and I feel that this would be an excellent platform for hunting, bikepacking, and camping
Two USB charging ports (one on the display and one on the battery pack) let you run portable electronics on the go or separate from the bike at your camp. Since this bike comes with two battery size options, and the upgrade is only $200, I’d definitely recommend the higher watt hour! The heavier weight, throttle, and unlockable higher speed will drain the battery faster than most competing products
All of the 2020 Surface 604 products utilize the same Reention battery pack design, and the batteries are interchangeable. This is a nice feature if you are exploring a his and her setup or want a city and trail bike… being able to take a second pack with you on the rear rack of the Boar Hunter would significantly extend the range

Pros:

The frame and fork are custom painted with Kryptek camouflage matte paint to help the Boar Hunter blend in to its surroundings, there are very few shiny parts and many of the black accessories are also matte
I think it’s pretty cool that owners can unlock the top speed of this ebike to go above 20mph because there are lots of open spaces in North America that allow ATV and motorcycles where a more powerful high-speed ebike would be allowed. This is a quiet and lightweight alternative to a motorcycle, which could be ideal for hunting or camping because it won’t frighten animals away. For those who want to convert to Class 1 for daily riding or use on restricted trails, the throttle has a quick-disconnect and the speed can go to 20mph or even lower if desired (which might extend the range). Keep in mind that higher tire pressure will improve efficiency, but low PSI is required for comfort and use in soft terrain like mud, loam, and sand
The display has a password option where you can set a four digit pin to deter tampering and theft. This is great if you’re leaving the bike at a public bike rack and don’t want people messing with the throttle while you’re away (especially since the throttle is active at all times with the bike on), and it might also help to secure the bike if you leave it at a campsite and continue on by foot
Between the Selle Royale gel saddle, riser stem, and high volume extra-large 4.5″ wide fat tires, the Boar Hunter is comfortable to ride, even on rough terrain and without a suspension fork (as long as the tire PSI is lowered a bit). For me personally, the suspension seat post is a great upgrade and worth the money if you plan to go far or fast
Considering how custom this thing is, I was surprised and delighted to see that it comes in two frame sizes!
That means more people can fit or ride comfortably and still get the custom camo design and racks seen here… most competing fat bikes don’t even have the option to buy racks like these that will fit correctly
The curb weight of ~67lbs may sound like a lot, but I actually think it’s pretty good given the extra-large tires and dual-rack setup, note the hollow spindle, punched out rims, and narrow rigid fork that all save weight
SRAM X5 is a pretty good component level, so the derailleur feels tight and shifts quickly and reliably. It’s equivalent to Shimano Alivio or Deore, which is five steps up from the bottom (X5, get it?) so it’s a great choice for an off-road rugged bike like the Boar Hunter
Great pedals, they offer a large and stiff platform with good traction so you won’t slip off. They have holes in the middle so mud can squish through, and they come stock with removable reflectors so you can go for safety or be more hidden
Large, powerful, hydraulic disc brakes are exactly what you need for heavier bikes (and times when the bike is loaded up with gear), disc brakes stay cleaner in dirty and wet terrain because of their higher placement, and the adjustable-reach levers can fit large or small/gloved hands comfortably. Note that both brake levers now include motor inhibitors for extra safety and control when stopping… some of the older Boar models did not include this
Not every electric bike offers throttle on demand, but I think it could come in very handy for getting started with a heavy load on this bike, or getting unstuck. The throttle allows you to get help moving forward while simply trying to balance the bike vs. having to do both things at once, and I’ve found that to be super useful in soft sand
Surface 604 offers a battery upgrade path for just $200 which increases capacity from ~500 watt hours to ~672 watt hours. This is definitely worth it for people who want to go further, navigate through more rigorous terrain, or ride at high speed. Both batteries use the same case that is cross compatible with all other 2020 Surface 604 models and the larger pack only adds one pound of additional weight because it uses the same number of cells with a higher energy density
The display panel has a full sized USB charging port built into the right side which is very convenient for powering a smartphone with GPS. Additionally, the removable battery pack has a full sized USB Type A charging port built into the top right corner, so you can charge and run portable electronics separate from the bike itself. This could be useful in a camp setting or even inside your car or home when the bike is mounted to a rack or parked in a shed or garage
The new color display looks great and has an intuitive button pad interface. I love the dedicated light button, the fact that the display has an ambient light sensor, that the brightness auto-dims when you activate the lights (so it won’t ruin your night vision), and that it swivels to reduce glare
I spoke with the bikes designer and he showed me how they designed the rear rack with fender support mounting points so they wouldn’t have to add additional holes on the bike frame itself… very smart! And if the rear rack is removed, I think you can use the mounting points for the fenders only
Most of the time when electric bike companies are using a hub motor and trying to save money they will use a simple cadence sensor, but Surface 604 opted for a fancier, more responsive, torque sensor and that combines really well with the power-on-demand trigger throttle to make the bike more capable in varied conditions, it goes and stops exactly when you intend
Surface 604 designed the frame with an aggressively sloped top tube to lower stand over height, this could really save your crotch if you had to hop forward unexpectedly and stand in soft terrain where your feet sink in. In order to make the frame strong enough to handle that sloped top tube, they added a tall gusset where it meets the seat tube

Cons:

Despite having a fairly powerful 500 watt 80nm geared hub motor, this bike just doesn’t feel as zippy or powerful as some competing models (some with 750 watt motors or mid-drives). I asked the design team about this and was told that they optimized for reliability and are also complying with Canadian regulations that limit nominal motor wattage. I found that the motor produced the most power when I was pedaling in assist level 5 vs. relying solely on the throttle
The motor mounts to the rear dropout using a keyed axle and slotted washer. It seemed reliable while riding, but I didn’t see any additional torque arms to spread axle pressure out into the frame. This is an area where durability and reliability could be improved, given the power of the motor and weight of the rear wheel. If the rear axle isn’t kept tight, it could rock back and forth and chew into the aluminum alloy frame over time
The chainring doesn’t use a narrow-wide tooth pattern (which would lock the chain on more reliably), and there’s no chain guide system (plates or a plastic guide), so I feel that the chain could bounce off more easily on this bike… and I’d consider finding an aftermarket 34 tooth narrow wide chainring as an upgrade or a cheap plastic guide like this
There’s no chain protector, so your pants could get dirty or snag on the chain and chainring. I also didn’t see a slap guard for the chain stay. This means that the paint could get chipped up over time, but the alternative (a shiny clear sticker) could reduce your camouflage. Consider a neoprene wrap slap guard if you want… but know that nicks on the chainstay won’t cause rust and shouldn’t impact the structural integrity of the bike
The optional steel fenders are pretty nice, but they do produce a bit of noice when riding over bumpy terrain. The rear fender doesn’t mount to the rack near the middle, and seemed especially bouncy there. Steel is sturdy, but if it gets scratched, it can rust vs. aluminum or plastic
The front rack design is pretty cool, especially with the standard gauge tubing on the sides for panniers, but it is fork attached vs. frame attached. This means that it adds weight and momentum when steering, and the cargo could tip out as the fork swivels to the side while making sharp turns or parking the bike. It’s probably best used for lightweight gear like clothing or sleeping bags
The straight 1-1/8″ headset design limits the option for aftermarket suspension forks. Most nicer ones, like the RockShox Bluto, require a tapered 1-1/8″ to 1-1/2″ headset. Still, the high volume tires and optional suspension seat post go a long way towards improving ride comfort, and I suspect that most owners won’t want to mess up the cool and stealthy camo look of the frame+fork by replacing it with suspension that could have shiny stanchions
It’s a minor thing, but I appreciate the two-way high lever shifter design that Shimano offers on their products while SRAM seems to only have a one-way high trigger. On the plus side, the low lever offers four-shift action to really dump the gears, and you won’t mash gears on this bike very easily because it uses a hub motor vs. mid-drive
Minor gripe here, but I wish they had been able to squeeze in bottle cage bossed on the seat tube, even if they were only used for smaller items like folding locks, it’s nice to have that option and some newer bottle cages offer side-entry so they could be made to work… at least you’ve got plenty of rack options
The rear derailleur and power cable (that feeds into the axle) are a bit vulnerable on all bikes, but that really comes to mind here because of the off-road use case. I would like to see a derailleur guard at the back to help protect these delicate parts
The included ebike battery charger leaves something to be desired because it only puts out 2 Amps (vs. 4 Amps on some competing chargers) and the plug-in spot on the battery is very close to the left crank arm which means you could snag the wire or bend the end piece if you trip over it. You’ll have to go to the non-drivetrain side of the bike and bend over to reach the charging port… minor complaint, but worth highlighting
I haven’t experienced this issue with the Boar Hunter, but while riding some of the older BH Easy Motion electric bikes, that use a similar TMM4 torque sensor, the chain would some times bounce around and activate pedal assist. This happened infrequently, and only on very bumpy terrain while I was in the highest gear… You can reduce the impact of this by keeping your hands on the brake levers and pulling in a bit to cut motor power while descending on bumpy sections

Useful Resources:

January 29, 2024 (10 months ago)

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jo

5 years ago

SURFACE does a nice job on the Boar, and oh how I wish my $$$ fat bike came with a throttle only option. A couple areas of concern, the 11-34 cassette would not cut the mustard for any hill climb, let alone a snow covered hill, considering Surface is Canadian and all they have in Canada is winter 8 months of the year. A 11 speed cassette or a wider spaced tooth range would be more applicable to a off road bike such as the boar. Weight is an issue here as this bike is heavy, save money by skipping the fenders and opt for some Chinese plastic fender types available for as little as $5 and up, no noise and budget friendly. Overall though, good bang for your hard earned buck !

Court

Great comments, Jo! And for anyone who is considering a smaller chainring to make starting, climbing, and sand/snow easier to slog through, check out these ones from Race Face that are available in different colors too :) if you have a link to some good fender suggestions, please, post it here for us too :D

Damir

I read these reviews before purchasing so I thought my experience might help others looking at this bike. I purchased in February of 2020. FYI my review of the bike on their site doesn’t show… Interesting!!!

The bike it self is awesome but it is sadly overshadowed by its poorly run customer service/company. I would not deal with this company again. Due to company knowingly sent a display that had a glitch and could not stay a class 2 and show mph with correct settings. After a few tries to send me one that works right they had to bypass the setting at factory in order for it to be set correctly. I don’t think it was ever fixed just bypassed. Then they downplayed what happened. I’ve written to the sales manager and the general manager but no response. The wrong front rack that was sent could be easily overlooked. But their questionable practices would make me nervous to buy from.

Hi Damir, that’s such a bummer! I thought the bike was so cool… I’m so sorry to hear that the display was goofed and the rack wasn’t right. I have personally met two of the team members (and know them for years), so I’m sad that they didn’t meet your hopes for good customer service. While I cannot speak for them directly, I do wish you the best with the new display, and hope that there aren’t other issues that crop up in the near future for you :/

Interestingly my review posted then disapeard. So much for transparancy

Larry

3 years ago

Why is Surface604 using a 30.4mm (ID) seat tube for their mountain bikes? You cannot buy a dropper post in this dimension. At best you would have to shim a 27.2, which is not ideal for such an application with regard to strength and reliability.

Hi Larry, I cannot speak directly for them, but perhaps the wider diameter tubing is used for overall strength. It might improve frame strength to have wider tubes and be less expensive to use a shim for the seat tube than taper it in. I’m not a bike designer at all, but I’ve noticed many sizes of seat tubes over the years and often wondered why there are so many choices vs. just a few. I’ve noticed handlebars going from 25.4mm to 31.8mm and now up to 35mm for improved strength with lightweight materials like carbon fiber on trail bikes. Those are my two cents ;)