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Aostirmotor S18 48V/15Ah 750W All Terrain Fat Tire Electric Mountain Bike

Final Price: Free Shipping & No Extra Fees at Checkout
$2,798.00 $1,399.00
You Save: $1,399.00

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Aostirmotor S18 48V/15Ah 750W All-Terrain Fat Tire Electric Mountain Bike 160694

Enjoy Nature Adventures with This Electric Mountain Bike!

Have the freedom to go anywhere and have a reliable daily ride with the Aostirmotor S18 Electric Mountain Bike! This stylish full-size mountain bike features sporty fat tires and a powerful electric motor to help you navigate high-traffic city roads and trails with ease. The S18 comes with a big battery and a full suspension design, which are what you need to go through congested paths to school or work or distant trails. It is among the best electric mountain bikes for sale today. This electric bike is perfect for students, moms, and dads going to work, riders, and outdoor enthusiasts.

The Aostirmotor S18 Electric Bike is the ideal ride for those who tend to bike on harsh terrain. It comes with a powerful 750-watt brushless motor, which is bigger than the competition, so you can speed quickly and have the torque to cross rugged terrain. It has more power than many expensive electric bikes and is the perfect ride for city commuting or hitting the trails. The motor is installed inside the rear wheel hub, which has the advantages of being mechanically simpler, providing torque directly to the wheels, and protecting the motor from the elements.

The S18 features a modern-style bike frame designed for riding on loose and hard surfaces. This bike is suited for rolling on surfaces such as dirt and gravel and rides very well on hard surfaces. It is a perfect daily rider and a ride for daily commuting and adventures. Have the confidence to use it on the road and travel dirt trails, curbs, and pathways to cut your commute. The Aostirmotor S18 is available in beautiful black and green colors.

This bike is designed to roll over rough terrain with ease, featuring a front and rear suspension and a set of aluminum alloy wheels. Because it is an electric bike, you can take advantage of bike lanes and off-road trails to avoid city traffic. It is a perfect choice for users who want the convenience of bikes when commuting. Aside from being quick transport, this electric bicycle has zero emissions, making it a greener, ecologically-friendly alternative to cars.

The bike has a throttle and pedal assist, so you can choose to maintain speed with little effort or conserve the battery. It can travel up to 21 to 43 miles (35 to 70 kilometers) on a single charge, so it is a perfect daily driver that will not lose charge halfway in your commute. Avoid city traffic to get to your destination quickly. Purchase the Aostirmotor S18 Electric Bike here at Electric Bike Paradise!

  • The Aostirmotor S18 Electric Bike is perfect for adults and for anyone who wants a high-performance bike that they can use for adventures or for everyday use. It sports a beautiful mountain bike frame and a set of lightweight fat tires, so you get the best of both worlds. Have no problems riding it on the pavement or on the dirt. The S18 is ideal for nature lovers, outdoor adventurers, and everyday commuters that prefer comfortable riding.
  • This is a powerful bike for its size! The Aostirmotor S18 has a 48-volt, 750-watt brushless motor, giving the bike incredible power and a respectable speed of 28 miles per hour (45 km/h). Expect this bike to achieve fast speeds in traffic and off the road. The motor sits inside the rear wheel, sending torque directly to the ground for fast acceleration. It has a large motor for its size so that you will have no problems riding uphill or over bumps. 
  • This electric fat bike has a single-charge range of 21 miles when you use throttle exclusively or up to 43 miles with pedal assist. Have the confidence to travel long trips or round-trip routes to work or school. The Aostirmotor S18 has an 11.6 amp/hour Samsung lithium battery power pack that can be removed so you can charge it inside. The battery charges to full in four to six hours, so you can charge the bike for an hour or two to extend its range. 
  • The Aostirmotor S18 features a twist throttle and five-level pedal assist hooked to a speed sensor for seamless action. Choose the pedal-assist to increase the range of the bike, or use the throttle to travel and speed up effortlessly on the road. The bike also has a seven-speed Shimano rear derailleur, so you can control and ride it like an ordinary bike.
  • It is a capable electric bike featuring a Zoom spring front fork suspension and a shock absorber on the rear. The equipped 4-inch fat tires offer premium grip and comfort whether you bike on the road or go over dirt. The bike comes with front and rear mechanical disc brakes that are reliable and enables you to stop on a dime. It features a high-quality bike frame crafted from rustproof 6061 aluminum. Aluminum is lightweight and does not suffer rust problems compared to steel-based frames. 
  • The Aostirmotor S18 is a stylish bike featuring a streamlined mountain bike frame and 26-inch aluminum-alloy rims for a sporty look. The exposed disc brakes and sleek tires give this bike a sleek look. It is a practical choice with durable components for total mobility. The Aostirmotor S18 Electric Bike is perfect for commuting and everyday mobility.

Seek Distant Places with this Electric Fat Bike!

Do you need a capable electric bike for the city commuting to work or school? Are you looking to have something usable on both off-road routes and urban environments? Many riders prefer the conveniences of foldable electric bikes, which are easy to store and ride to school or work. The Aostirmotor S18 is perfect for adults and teens who want to enjoy riding mountain bikes for commuting in the city and have a capable ride for off-road routes. The mountain bike frame is popular and easy to ride. Enjoy driving with the full suspension setup that absorbs the bumps and potholes of your daily route. 

The Aostirmotor S18 has a single-charge range of 21 to 43 miles depending on how you use the throttle and pedal assist, so it has more than enough to last the whole day. Feel the excitement once more, as this electric fat bike has a powerful 750-watt brushless motor and a seven-speed Shimano derailleur. It has a lot of power reserve for quick acceleration, which is needed to get through traffic. 

Perfect Dimensions

The Aostirmotor S18 Electric Bike is 73” inches in length, has a handlebar height of 44 inches, and weighs 88 lbs. (39.9 kilos), including the battery. The bike requires minimal assembly right out of the box. 

The S18 has a charger and requires just six hours to charge the battery fully. Make sure to charge the bike before use. Before riding the bike for the first time, adjust the brakes and inflate the tires to the recommended level. Check every component of the bike before using it. 

Equipped with Modern Electronics

Enjoy traveling on the Aostirmotor S18 Electric Mountain Bike. It is equipped with a twist throttle that is easy to use on the road. If you prefer to pedal, choose to use the pedal-assist for more comfortable pedaling. Control speed and torque with the seven-speed Shimano derailleur. See everything you need with the LCD Intelligent Display, displaying the battery level, running speed, assisting level, and trip distance.

The S18 is powered by a 48-volt lithium-ion battery pack that is removable so you can charge it inside your home or office. The bike charges fully in just six hours, so charging it for a few hours can extend the range. For additional comfort, the stem of this bike is adjustable and comes with a wide saddle. Enjoy all of these benefits in this nifty yet powerful bike. The bike has road essential accessories such as a front headlight, a rear rack, and a kickstand. You will love to ride it every day, and it is perfect for the daily commute and weekend adventures.

Don’t Go for Surplus or Cheap Electric Bikes

Many cheap electric bikes are not reliable nor safe, so buying one is often hit or miss. They are not designed for sustained use because of poor craftsmanship or poorly-done electronics. Some cheap fat tire bikes lack even the most basic electrical safety features, putting the user at risk of electric shocks. Also, a lot of surplus models cannot climb hills or provide enough level of pedal assist. They are equipped with cheap batteries and cannot go far. 

If something goes wrong, there is no way to have them serviced. You cannot depend on them. Lastly, most are not comfortable to use. Choose safety and real performance. Only choose electric bike brands that have years of presence in the market and have certifications. 

Get the Real Deal with Aostirmotor Fat Tire Electric Bikes!

Electric bicycles are the way to go for an active and sustainable lifestyle. It has been proven that such vehicles allow people to achieve physical activity levels, especially those who aren’t fit enough for exercise. Driving a car in the city can eat up your limited time and cut productivity. Don’t forget the cost of car maintenance, insurance, and gas. 

Here at Aostirmotor, we want to be creative and create electric bikes that fit people’s lifestyles and most will find easy to operate. We also design our bikes to deliver more power when compared to competitors (hence our motto ‘Power brings Joy’), so our customers will find more value in their purchase. Our company has a presence not only in the United States but also in Europe and Asia. Get amazing deals plus tons of freebies when you purchase this Aostirmotor S18 Electric Bike here at Electric Bike Paradise!


  • Best Seller Ranking: #18 in Bikes
  • Brand: Aostirmotor
  • Type: Mountain Bikes
  • Size: 26"
  • Color: Black
  • Age: Adult
  • Frame Material: Alloy
  • Sports Team: 2 Packs
  • Date First Available: October 16, 2021

Order an Aostirmotor S18 48V/15Ah 750W All Terrain Fat Tire Electric Mountain Bike 160694 today from Free shipping + free gifts on all of our Aostirmotor Fat Tire Electric Mountain Bikes. Buy today and get a discount, free shipping, and a free gift!

Aostirmotor S18 48V/15Ah 750W All Terrain Fat Tire Electric Mountain Bike

Aostirmotor S18 48V/15Ah 750W All Terrain Fat Tire Electric Mountain Bike

$1,399.00 $2,798.00
Aostirmotor S18 48V/15Ah 750W All Terrain Fat Tire Electric Mountain Bike

Aostirmotor S18 48V/15Ah 750W All Terrain Fat Tire Electric Mountain Bike

Final Price: Free Shipping & No Extra Fees at Checkout
$2,798.00 $1,399.00
You Save: $1,399.00

Customer Reviews

Based on 6 reviews
Ron Cox
Good bike for Men

This bike was purchased for my by my father in law. After much research ing thie 26 " and the 20" we decided that this bike would be the better fit as we could not find anything that said what the starting hit for the rider should be. After purchasing the bike I was able to email the support center whom said this bike would best fit riders 5'4" to 6' 3". I am exactly 5' 4" and I am unable to even touch the ground on my tippy toes. I road the bike one and fell three separate times. Lucky enough I was not seriously hurt. I have sense sold this bike at a financial loss and have purchased another that should fit me better. This bike however is constructed well and would be great for taller men.

Joseph T.

Super easy to assemble! Great comfort. Sturdy e-bike! Highly recommended!

Michael N.
Great Quality and Affordable Price

I bought this e-bike for my daughter during the pandemic so we could enjoy the outdoors. I’m really impressed with the quality and the affordable pricing of this bike!!!

Henry B.
Best gift ever!

So easy to assemble and get rolling. Received the bike in less than a week even though it said 1 to 2 weeks delivery.

Frank H.
So far so good!

Beautiful bike. Easy to build. Comfortable to ride! Cannot comment on reliability since I haven't had it long but it's been great so far!