Eunorau Fat-HD Fat Tire Electric Mountain Bike

11 reviews

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4.9 Based on 11 Reviews
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Good Support and Good Bike

Everything went well and as expected. The bike is awesome. The only reason I gave it 4 stars was that there was damage in shipping which resulted in some slight scratches on the bottom of the front forks and a bent derailer guard which I didn’t notice until I had issues shifting gears ( which it also took me a couple of days to notice). The remedy once I noticed why it wouldn’t shift was to bend the guard out slightly so the derailed was free to move to the outboard gears. I tried to adjust the gears for a while before I saw the Problem. Evidently that can happen in shipping and if you have that issue check the guard first, it will save your a lot of wasted effort. I’m not a bike mechanical expert so it took me a while to figure out. Hopefully this helps others if they see the same issue. Steve is responsive and very clear in his communications. I would definitely recommend his site and store.

Michael H.
United States United States
Really Good Ebikes

Thank you for the honest review. It's greatly appreciated.

Excited about our 2 new Fat HDs

We received our bikes today, just in time for our trip. They were easy to put together, and we were riding in minutes. Bikes are built really well, and have plenty of power. Can't wait to break them in next week. Thanks for taking the time and helping me pick the right bikes for our needs. Really appreciate you also getting them shipped quickly! Thanks

Ralph R.
United States United States
Really Good Ebikes

Ralph, Thank you for your kind review. Great to hear. Steve

BBSHD 1000W Mid-Drive Superb Performance

The BBSHD motor on the Fat-HD is both quiet and powerful, perfect for bowhunting deer. Excellent build quality and long range battery. Very high performance machine.

Grant K.
United States United States
Really Good Ebikes

Thanks Grant.

Eunorau Fat-HD Fat Tire Electric Mountain Bike ROCKS!

Solidly built bike. Still working it in, but so far its super fun and useful to my bike-based lawncare business. We can go so far and fast and haul lots of stuff up hills. It is so liberating and you can go anywhere with this machine.

Jeff M.
United States United States
Fat Tires Change Everything

This is my first ebike with fat tires and I can’t get over what a big difference it makes. Wow! This bike practically glides through any terrain, including the rutted trails near my home. Plus, it is really easy to handle.

Todd W.

Bafang BBSHD 1000W Mid-Drive Motor

48V/15.6Ah Downtube-Integrated Battery

Hydraulic Disc Brakes

Shimano 7-Speed Gears and

Much More...

eunorau ebikes authorized dealer logo for really good ebikes

Fat-HD Electric Mountain Bike Description

Are you looking for a fully-loaded mid-drive electric mountain bike that won't break the bank? The Fat-HD by Eunorau might be your dream bike.
Perfect for hunters and outdoorsmen, the Fat-HD was favorably reviewed by independent reviewers Electric Bike Review and Ebike Electrek (see below). The Fat-HD is crafted from 6061 lightweight yet heavy-duty aluminum, in a classic diamond frame with a suspension fork and aggressive mountain bike riding posture. 
eunorau fat-hd ebike left side handlebar controls

The Fat-HD sports a 1000W BBSHD mid-drive motor by Bafang, one of the most powerful and yet quiet ebike motors on the market today. The motor is paired with a downtube-integrated 48V/15.6Ah long-range battery, which is aerodynamic and easily removed for remote charging.

These electronics will propel you up the steepest inclines, and can power through thick sand and snow. The wide 4-inch fat tires will give you that extra stability and traction for off-road riding.

eunorau fat-hd ebike right side controls

The Fat-HD has several drive modes, including a conventional 7-speed transmission system by Shimano, a 5-speed Pedal Assist System which uses a 12-magnet cadence sensor, and a left-side throttle.

Together, these drive modes will allow you to find the sweet spot for every riding situation. You can use the conventional gears when cruising around, but if you want a little boost, just give the thumb throttle a push, and off you go. Combine that will some pedal assist, and you really take control of ebike riding experience.


Eunorau Fat-HD Electric Mountain Bike Specifications

  • MOTOR: 1000W Bafang BBSHD Mid-Mounted Geared Motor w/ 160Nm Torque and Super Quiet Operation
  • BATTERY: 48V/15.6Ah Long-Range Downtube-Integrated Battery by Yiklik (w/ Extra 48V/16Ah and 48V/21Ah Options)
  • CHARGE TIME: 6-8 hours
  • ESTIMATED RANGE: Up to 45 Miles Per Charge (72 km)
  • DISPLAY TYPE: APT 500c, Fixed, Adjustable-Angle, Backlit, Full Color LCD, Vibration Feedback (See Display Manual)
  • READOUTS: Battery Level (10 Bars), Speed, Assist Mode (0-5), Trip Distance, Total Distance, Average Speed, Max Speed, (Includes 5 Brightness Settings, Walk Mode, Time-Out Adjustment, Battery Read-out Preference)
  • DISPLAY ACCESSORIES: Integrated Button Pad Near Left Grip, Buttons: +, -, Menu, On/Off, (Hold - for Walk Mode, Hold + for Lights, Hold M for Settings Menu)- Fat-HD Display Manual
  • DRIVE MODE: Cadence Sensing Pedal Assist, Left Side Thumb Throttle (12-Magnet Cadence Sensor)
  • BODY POSITION: Forward, Upright
  • SUGGESTED USE: Neighborhood, Sand and Snow, Trail
  • WARRANTY: 2 Year
  • TOTAL WEIGHT: 62 Lbs. (28.12 kg)
  • BATTERY WEIGHT: 10.0 Lbs. (4.53 kg)
  • MOTOR WEIGHT: 12.3 Lbs. (5.57 kg)
  • FRAME MATERIAL: 6061 Aluminum Alloy
  • FRAME SIZE: 19 in (48.26 cm)
  • GEOMETRY MEASUREMENTS: 19" Seat Tube, 30" Stand Over Height, 27" Reach, 34.5" Minimum Saddle Height, 26" Width, 76" Length
  • FRAME FORK DETAILS: RST Spring Suspension, 100mm Travel, Compression Adjust with Lockout, Preload Adjust, 32mm Stanchions, 135mm Hub Spacing, 9mm Axle with Quick Release Skewer
  • FRAME REAR DETAILS: 190mm Hub Spacing, 12mm Threaded Axle with Quick Release
  • ATTACHMENT POINTS: Front and Rear Fender Bosses, Rear Rack Bosses
  • GEARING DETAILS: 7-Speed 1x7 Shimano Acera Derailleur, DNP Nickel Plated 11-34 Tooth Freewheel (w/ protective chain wheel cover)
  • SHIFTER DETAILS: 7-Speed Shimano Altus w/ Thumb Shifter on Right
  • CRANKS: Aluminum Alloy, 170mm Length, 46 Tooth Chainring
  • PEDALS: Wellgo Aluminum Alloy Platform with Reflectors, CrMo Axle, Black
  • HEADSET: Neco H156ME, Semi-Integrated, Sealed Cartridge, 1-1/8"
  • STEM: Aluminum Alloy, Promax MA-400, 90mm Length, 8º Angle, 15mm Rise, Three 10mm Spacers, 28.6mm Clamp
  • HANDLEBAR: Mid-Rise, Aluminum Alloy, 650mm Length, 20mm Rise
  • BRAKE DETAILS: Promax XD-E200 Hydraulic Disc Brakes w/ Dual Piston Calipers & 160mm Rotors & Motor Cut-Off Sensor in Brake Handles
  • GRIPS: Rubberized Slant waffle pattern, friction mounted
  • SADDLE: Velo Plush
  • SEAT POST: Promax, Aluminum Alloy
  • SEAT POST LENGTH: 320 mm
  • RIMS: Aluminum Alloy, Double Wall, 70mm Width, 36 Hole
  • SPOKES: Stainless Steel, 13 Gauge, Black with Nipples
  • TIRE BRAND: Kenda Juggernaut, 26" x 4" (98-559)
  • WHEEL SIZES: 26 in (66.04cm) w/ Option for Extra 27.5" x 3.0" Wheel Set
  • TIRE DETAILS: 5 to 30 PSI, 0.4 to 2.1 BAR, 30 TPI
  • TUBE DETAILS: Schrader Valve
  • ACCESSORIES: Mid-Mount Adjustable Kickstand, Integrated Blaze-lite 6 Lux LED Headlight, Seat-Post Mounted Blaze-lite 6 Lux LED Backlight (Solid, Flashing), Bolt-On Rear Rack with pannier rails, Metal Fenders in Gloss Black Optional accessories include: Upgraded Display, Upgraded Brake Set, 152 or 175mm Crank, 42 tooth Skinny/Fat Chain ring, Spider Chain Ring, Upgraded Integrated Front Light
  • OTHER: Locking Removable Downtube-Mounted Battery Pack, 2 Lb. 3Amp Charger, Integrated Motor Controller, Encased Motor
  • WARRANTY: 2 Years Motor & Battery; 1 Year Other Electronics

CALL for Local Professional Assembly Options

Ebike Assembly Video

This video shows the assembly process for the Fat-AWD, and is essentially the same procedure for the Fat-HD ebike.

Brent McCluskey - Electrified Reviews - New Fat-HD Video Review

We love it when independent reviewers test ride ebikes we carry, and report their findings online. One of the best is Brent McCluskey from Electrified Reviews. Not only are his test rides and reviews tons of fun to watch, but he really gets into the weeds and gives his honest opinion. Check out Brent's video review of the Eunorau Fat-HD below.

Electric Bike Review (EBR) Coverage of the Fat-HD by Eunorau

The independent 3rd-party ebike review site EBR gave a very favorable review to the Eunorau Fat-HD. You can read the full EBR report here, with highlights and the review video below.

  • A massively powerful 1000w mid-drive electric fat bike with internal pedal assist, thumb on demand, available in two colors with commuting accessories included as standard
  • 46 tooth front chain ring for greater torque, combined with the fat tires, pull of an immense 1000w and extra weight of the unit adds greats traction in loose terrain
  • Commuting accessories come standard; metal fenders, dual pannier rail rear-rack, integrated from head light, and battery powered rear light
  • Included mechanical disc brakes need regular adjustment to stay on top of the increased wear from the high speed and weight of the bicycle. I'd encourage swapping for hydraulic disc brakes for routine high-speed rides

Ebike Reviewer Compares Fat-HD to Rambo - Guess Who Wins?

The independent ebike review site Ebike Reviewer has pit the Eunorau Fat-HD against the Rambo Bikes 750W, and the results are revealing. Check out the head-to-head battle before you decide on which one is right for you.

rambo bikes 750 vs eunorau fat-hd electric bike
  • Orders for in-stock items take 24-48 hours to process, then about 5-7 days in transit. Delays due to Covid have occurred. If an item is on backorder, the estimated ship date will be shown below the Pre-Order Button.
  • All products are shipped free within the Contiguous US via UPS, FedEx or similar carrier. Shipping to AK, HI and PR may incur additional charges.
  • If your package appears damaged from shipping, please do not accept it. Tell the driver to keep the package and contact us immediately at 888-883-3350. We offer Route Package Protection to ensure against lost, stolen or damaged goods. Click here to learn more about Route.
  • Returns for buyer’s remorse are typically not accepted by our suppliers, and if accepted, the customer may incur shipping and restocking fees.
  • Please click here to read our entire Shipping & Returns Policy.


Ask a Question
  • What is the minimum seat height? I am 5'2"

    The minimum seat height is 34.5". This bike might be a little too large for you to ride comfortably.

  • Weight capacity Iam 6 ft 2 and 245 pounds

    300 lbs. This bike should fit you well.

  • Do you offer the 21AH Battery upgrade for the EUNORAU Fat HD? If you do how much is it and do you have the grey bikes in stock, ready to ship. I’m ready to buy.

    There is no battery upgrade option for the Fat-HD, but I should note that 15.6Ah is a high-capacity battery. On average, it should give you up to 40 miles of assistance. The Fat-HD begins shipping at the end of May, but pre-orders are highly encouraged, as it is expected to sell out quickly.

  • Is there an upgrade battery for my eunorau fat hd fat tire mountain ebike,if so will it give my 1000 w bike more power and why

    There are battery upgrade options. You could get a higher-capacity battery (48V/17Ah) which will give you a longer range, or you could buy a second battery, and swap them out as needed (never being without a charged battery). These upgrades, however, will not give your motor more power.