Powerful! Addmotor M-5800 1000W (1500W Peak) Fat Tire Electric Bike - Really Good eBikes

Addmotor Motan M-5800 1000W (1500W Peak) Fat Tire Electric Bike

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FREE Local Professional Assembly ($50+ Value)
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48V/1000W Bafang Mid-Drive Motor - 48V/17.5Ah Panasonic Cell Downtube Battery - 7-Speed Shimano Gears - Unique Frame Geometry

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The Motan M-5800 by Addmotor is simply one of the most powerful fat tire electric mountain bikes (e-MTBs) on the market today. This electric fat bike is meant to concur the most challenging off road trails, and may not even be street-legal in some jurisdictions.

But if you want a monster truck of e-MTBs - this is it. Not only does it feature an incredibly powerful, high-torque 48V 1000W mid-drive motor by legendary Bafang, it's paired with an equally robust 48V/17.5Ah downtube-integrated removable battery pack with high quality Panasonic cells.

addmotor motan m-5800 fat tire electric mountain bike at really good ebikes

Like all Addmotor e-bikes, the Motan M-5800 can be ridden like a conventional bike, using pedal power alone; you can engage pedal assist (PAS) and get some help pedaling up the steep hills or against headwinds; or you can simply engage the twist throttle and let the motor do all the work for you. Equipped with a shift-sensor and pedal assist sensor to save power and protect gears. The M-5800 is engineered to fit riders 5'-6" to 6'-6" in height, and has a maximum carrying capacity of 350 lbs.  

Check out the awesome coverage of the M-5800 at Electric Bike Review, where they describe this e-MTB as follows:

  • Powerful and fast electric fat bike with fun color scheme and capable 4-inch wide tires that help float through mud, snow, sand, gravel and other loose terrain;
  • Bafang 1,000 watt mid-drive motor offers a top throttle speed of ~30 mph and the larger-than-average downtube battery gives you the juice to enjoy it and go a bit further;
  • Entry-level front suspension with lockout, fat tires and wide saddle make for a comfortable ride (especially if you lower the PSI), good weight distribution with the motor and battery low and center;
  • Good ebike option for hunters who want to go deep into the woods without getting slowed down by soggy terrain, the smell of gasoline, and the noise of an ICE motor, only sold online so expect some DIY and limited support.



Motan M-5800 Specifications

  • BODY POSITION: Forward 
  • MOTOR: 1000W Nominal (1500W Peak) Bafang Mid-Drive Engine
  • BATTERY: Long-Lasting and High-Torque 48V/17.5 Downtube-Integrated Lithium-Ion Battery w/ Panasonic Cells and BMS
  • SUGGESTED USE: Sand and Snow, Trail 
  • ELECTRIC BIKE CLASS: Moped or Motorcycle (Class 4)
  • WARRANTY: 1 Year Comprehensive 
  • MODEL YEAR: 2018
  • TOTAL WEIGHT: 67 lbs (30.39 kg) 
  • FRAME MATERIAL: Aluminum Alloy 
  • FRAME SIZE: 19 in (48.26 cm)
  • GEOMETRY MEASUREMENTS: 19 in (48 cm) Measurements: 19” Seat Tube, 23.5” Reach, 28” Stand Over Height, 25” Width, 73.5” Length 
  • FRAME TYPE: High-Step 
  • FRAME COLORS: Black with Orange or Red Accents 
  • FORK DETAILS: MOZO Spring Suspension, 100 mm Travel, Compression Adjust with Lockout, Preload Adjust, 135 mm Hub Spacing, 9 mm Skewer with Bolts 
  • FRAME REAR DETAILS: 170 mm Hub Spacing, 9 mm Skewer with Bolts 
  • ATTACHMENT POINTS: Fender Bosses, Rear Rack Bosses, 
  • GEARING DETAILS: 7 Speed 1x7 Shimano Tourney Derailleur, Shimano CS-HG20C-7 Cassette 12-28 Tooth
  • SHIFTER DETAILS: Shimano SIS Index Thumb Shifter on Right 
  • CRANKS: Aluminum Alloy, 170 mm Length, 46 Tooth Chainring with Alloy Guard 
  • PEDALS: Neco Aluminum Alloy Platform with Raised Teeth 
  • HEADSET: Neco, Threadless, Internal Cups, 1-1/8” to 1/12” Tapered 
  • STEM: Neco, Alloy, 110 mm Length, 31.8 mm Clamp Diameter, Three 10 mm Risers 
  • HANDLEBAR: Alloy, Flat, 640 mm Length 
  • BRAKE DETAILS: Tektro Auriga Hydraulic Disc with 180 mm Rotors, Tektro Three-Finger Levers with Motor Inhibitors 
  • GRIPS: Ergonomic, Stitched Faux Leather, Black 
  • SADDLE: AddMotoR Branded, Relaxed with Foam, Black 
  • SEAT POST: Alloy 
  • SEAT POST LENGTH: 340 mm 
  • SEAT POST DIAMETER: 30.8 mm 
  • RIMS: Alloy, Double Wall, Punched Out, 36 Hole 
  • SPOKES: Stainless Steel, 12 Gauge, Black with Nipples 
  • TIRE BRAND: Kenda, 26” x 4.0” (98-559) 
  • WHEEL SIZE: 26 in (66.04cm)
  • TIRE DETAILS: 5 to 30 PSI, 0.4 to 2.1 BAR 
  • TUBE DETAILS: Schrader Valve 
  • BATTERY WEIGHT: 8.5 lbs (3.85 kg) 
  • MOTOR WEIGHT: 12.35 lbs (5.6 kg) 
  • ACCESSORIES: Plastic Mud Flaps, Steel Derailleur Guard, Adjustable Length Kickstand at Rear, Blaze-Lite Independent Headlight (Three AAA Batteries), Blaze-Lite Independent Detachable Seat Post Mounted Backlight (Three AAA Batteries), Independent Bell on Left 
  • OTHER: Locking Removable Downtube Mounted Battery Pack, 1.6 lb 2.5 Amp Charger

Brent McCluskey — Electrified Reviews

The Addmotor Motan M5800 fat tire electric bike is a great choice for hunting, going through snow, mud, sand and other slushy terrain thanks to the huge 4" fat tires, 1000 watt motor, 30 mph top speed and ginormous 17.5 ah battery. This thing can go pretty much anywhere!


shipping and return policy

Order Confirmation

As soon as you place an order you will receive an order confirmation email. The email include details about the order, and is your record that we have received your order in our system and pre-authorized your credit card for the purchase.

Before we contact the warehouse to confirm that the selected item(s) are in stock and available for immediate shipment, all orders are subject to fraud protection analysis. This protects both ourselves and the customer, by ensuring that credit cards are not being used fraudulently, and no ID theft has occurred. This process can take anywhere from a few minutes to a few hours. Upon fraud clearance, the supplier is contacted to fulfill the order.

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If a product cannot ship within 48 hours of the order being placed, we will contact the customer to let them know what fulfillment timeframes to expect. If a product is on backorder, estimated shipping times are subject to several variables, including delays at border crossings.

If your item is on backorder or unavailable, we will reach out to you by email or phone, and see if you want to keep the order and wait for the product to come back into stock; cancel the order; and/or change it for a different item or items. If you cancel your order, we will void the pre-authorization and your item(s) are. If available for immediate shipment, we will process the charge and submit the order for shipment.

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If your order is in stock and we process the charge to your credit card, it will ship within typically within 24-48 hours from the date of your order. We will send you tracking information within 24 hours of your order leaving the warehouse to the email address you provided at checkout. Please know that some suppliers will take up to a week to fulfill an order, but we work diligently with each one of them to shorten shipping times on every order. 

If you do not receive tracking information, feel free to follow up with us at: info@reallygoodebikes.com or by phone (toll free 888-883-3350).

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We work diligently with our customers to avoid warranty claims, and will seek to resolve issues amicably. Bicycles and scooters require initial assembly, adjustments and fittings, and regular maintenance thereafter, and none of these requirements are covered by manufacturer warranty. If fact, the inverse is true: failure on the part of the customer to properly maintain their new bike could result in voiding a warranty.

All warranty communication is ultimately between the customer and the manufacturer for genuine issues of workmanship or defect within the warranty period, and the supplier will repair or exchange products AT THEIR DISCRETION.

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All sales are final. At the discretion of Seller, orders cancelled after 24 hours may be subject to a 38% administration fee, whether or not your order has shipped. If your order has shipped, you (the Buyer) will also be responsible for actual return shipping charges. REFUNDS WILL ONLY  BE ISSUED TO THE ORIGINAL PAYMENT METHOD USED WHEN PLACING THE ORDER. RETURNS AND REFUNDS ARE SUBJECT TO POLICIES OF THE RESPECTIVE BRAND SUPPLIER. Brands such as EWheels will accept unopened returns, but the customer will bear the cost of the original shipping, return shipping, and a restocking fee. So please, before placing your order, make sure this is a product you want and will not regret purchasing. Seller may cancel orders at their discretion.

Really Good eBikes is your online store for the best electric bikes, electric scooters, and electric skateboards on the market. We also carry a wide range of personal transportation vehicles, including mobility scooters, conventional bicycles, tricycles, kick bikes (aka footbikes), carving scooters, tandem bikes, electric skateboards, and mountainboards - anything to help you get you out of the car and into the world.

Learn more about us, and why we got into the crazy world of electric bikes, in the interview I did with Derek Markham Treehugger!

We are proud to offer World-Class Customer Service, including phone, chat and email support, as convenient ways to get in touch with us. We are one of the few companies in the online world of eBikes that actually pick up the phone when you call, respond to your request to chat, and answer your emails with timely and accurate information.

If we don't know the answer to your question, we will figure it out. We're not here to make a quick buck, and we will never push you to buy something. We will work with you to find the right product for your unique needs, and if we don't carry what you need, we'll try and find someone who does. These are just a few of the things that make us unique.

We also provide exclusive added value that no other online ebike retailer can claim:

★ FREE Shipping in Continental US - $150+ Value!
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★ FREE Manufacturer Warranty Support - $250+ Value!
★ FREE Consultation and Lifetime Support - Priceless!
★ FREE Personal Electric Vehicle Pride of Ownership - Eternally Priceless!


We are Authorized Dealers for our nationwide network of suppliers, and ship directly from their warehouses to you, giving you the best prices guaranteed. We distribute products throughout the continental US via UPS and FedEx. We can also ship to Canada, although extra duties and taxes may apply.

If you have any questions about our products, or if you would like to check on the availability of an item, please click the Chat Icon in the lower right corner, and we will personally do our best to help. Or give us a call at 888-883-3350We also have a general FAQ page for eBikes and Mobility Scooters, where we answer many common questions people have.

By the way, not sure which ebike is right for you? We offer free consultation to help you decide. Just take our short survey here, or give us a call, email or chat - we're here to help. You can also read our 2019 eBike Buyers Guide, which we offer free without the requirement that you provide us an email address.

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The electric bikes we sell come mostly assembled, and many customers are fine completing the assembly process, which typically involves attaching the front wheel, attaching and adjusting the handlebar, attaching pedals, adjusting the brakes, and checking to make sure all the connections are secure and fit to the riders height and desired riding position.

But for those who what this done for them, we now offer free professional bike assembly with every ebike sold. How does this work? Well, you can contact us and we'll find a local shop to do the assembly for you, or you can simply include your local bike shop as the shipping address when you check out. Make sure to include an "order note" when checking out, so that we can do all the coordination for you.

Some restrictions apply. You will need to live close enough to a local shop where your bike can be assembled for you. The local shop will need to offer assembly services - but this is a very common service, and we have never called a shop that wouldn't do this for around $50. If it costs more than that, you will need to pay the difference. Once the work is completed, just email us a copy of the store receipt, and we'll refund you $50.

Not sure if this is for real? Call us now and we'll show you how it works. Call us toll free at 888-883-3350. Or send us an email to info@reallygoodebikes.com.

Please note that this amazing offer cannot be combined with our otherwise incredible discount codes.

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Ask a Question
  • Could it be delivered to Rock Hill SC 29730? What is the nearest place it can be setup? Also, any discount if I bought a M5800 and a M450?

    Yes, we ship everywhere within the Continental US, and there are several bike shops in Rock Hill which could assemble the bike for you (we ship directly to the shop for assembly and fitting). If you were to buy both bikes, there certainly would be a discount. Give me a call (888-883-3350) or email (info@reallygoodebikes.com) for a custom discount code. 

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