Skip to product information

AOSTIRMOTOR S18 All Terrain, Full Suspension, Electric Mountain Bike, 48V/17Ah, 750W


Regular price
Price: $1,399.00
Regular price
List Price: $1,699.00
Sale price
Price: $1,399.00
You save: $300.00 (18%)
View Cart

Estimated Arrival: Between Jul 22 and Jul 27. United States

Free Shipping in the U.S. (48 Contiguous States).

AOSTIRMOTOR S18-750W Technical Features


The unique triangular frame increases the payload capacity of the bike to 300lbs. The black frame and linear decals give the bike a sporty appearance.


    The S18 is coupled with a 750W toothless brush motor with a torque of 85Nm. This high-speed motor allows you to handle rough roads with ease.



    The 48V 15Ah (720Wh) lithium battery is removable and upgradable. The battery charging problem can be easily solved by choosing a removable battery frame.


    The backlit LCD display monitors your speed, mileage, battery capacity, and provides other important metrics. It is also equipped with a USB port to charge your devices.


    Fashion, practicality, and sturdiness were top of mind when designing the S18.  Its streamlined black frame offers the rider a full sense of movement.  With a front suspension fork and 4" fat tires, the S18 ensures you will handle any terrain with ease.  Even when traveling on complex and rugged mountain roads, this bike will offer a comfortable riding experience.  The sturdy 6061 aluminum alloy frame supports approximately 300lbs.   


    • A - Total Length 73"
    • B - Handlebar Height 44"
    • C - Wheelbase 50"
    • D - Minimum Seat Height 31"
    • E - Maximum Seat Height 35"
    • F - Chain Stay Length 23"
    • G - Standover Height 33"
    • H - Top Tube Length 20"
    • I - Wheel Diameter 28"
    • J - Head Tube Length 6"
    • K - Handlebar Length 26"

    Order Confirmation:

    As soon as you place your order, you will receive an email confirming your order.  This means that we have received your order in our system and pre-authorized your credit card for the purchase.  As soon as we receive your order, we automatically reach out to our suppliers to confirm that your order is in stock and available for immediate shipment.  If your items are on backorder, or unavailable, we will void the pre-authorization and reach out to you via email. 

    Order Shipment:

    If your order is in stock and we process the charges to your credit card, it will ship within five business days from the date of your purchase.  We will send you tracking information within 24 hours of your order leaving the warehouse to the email address or phone number you provided when checking out.  If you do not receive tracking information from us within six business days, feel free to follow up with us at

    Cancelations, Damages, and Refunds:

    If for any reason you need to cancel your order, please contact us as soon as possible at  We cannot guarantee that we will be able to stop shipment before your bike leaves the warehouse. 

    Please refer to our Manufacturer's Warranty and Return Policies page to learn how cancelations, damages, and refunds will be handled by the manufacturer of your particular product.  In all cases, the manufacturer's policy supersedes our own policies where there are differences.  

    Warranty & Returns

    We want you to be completely happy with your purchase.  

    ​If you are unsatisfied in any way with your order, please contact us as soon as possible at and we will do our best to ensure your satisfaction.

    If you need to return your order, please refer to our Manufacturer Warranty & Return Policies page for details on the specific brand's policies for the product you have purchased. 

    Please note that each brand carries its own policies.  If there are any differences between general Return Policy and that of the manufacturer, you should follow the manufacturer's Return Policy for the product you purchased.

    Customer Reviews

    Be the first to write a review