on Orders Over $100 or $8 Flat Rate

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    On all orders over $100

  • Local Aussie Support

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  • Over 70 Locations

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  • Easy Returns

    Hassle free returns policy

ACE-X Demon Dual Motor Electric Bike

Colour: Matte Black

Free Shipping

At Ampd Brothers, we offer FREE shipping on all orders over $100 and a flat $8 rate for orders under $100 within Australia.

Oversized items over 50kg, such as Sur-Ron Motorbikes will incur a $199 freight fee to WA, TAS, and NT. Additional fees apply to remote locations where services may be limited (e.g., Broome, Lord Howe, Kangaroo Island) we may adjust shipping fees or cancel orders to these areas.

Delivery times range from 2 to 14 business days, excluding public holidays and peak periods.

Ensure your shipping address is attended to avoid missed delivery fees. We securely box all orders but items like bikes require some assembly—refer to our assembly page or contact your local dealer for assistance (assembly fees may apply). Note, we do not ship large items to P.O. Boxes or Parcel Lockers, though small articles can be delivered to P.O. Boxes via AusPost.

For international shipping, refer to Shipping prices at checkout or contact us for a detailed quote. All rates are charged in AUD$ and exclude import taxes or charges. For full details, please refer to our Shipping Page or contact us.

2 Year Warranty

Here at Ampd Brothers we stand behind all our products nation wide regardless of where you live so you can rest assure knowing your purchase comes backed by a renowned Aussie Family Owned Brand.

Warranty Periods:
  • 2 Year's on 2023+ Ampd Brothers Adult Electric Bike Models (Sold from December 1st 2022 onwards)
  • 1 Year on Ampd Brothers Kids Electric Bikes (EVO & Lil Rippa)
  • 1 Year on Pre 2022 Electric Bikes, Stacyc, Surron, RFN & Vortex Skateboards
  • 6 Month's on Products Sold as "Ex-Demo" or "Ex-Display" items
  • 3 Months on Refurbished or Repaired Products
  • 3 Month's on any Parts & Accessories*

Our Extensive Warranty applies Australia Wide for all our products. *T&C's Apply for full information on our Warranty Click Here.

Nationwide Locations

Shop with confidence knowing your new ride is backed by over 70+ industry leading Sales & Service teams Australia wide. To find a stockist near you visit our store locator.

Why Ampd Bros

Why Choose Ampd Bros® Electric Bikes?

The Original Aussie Family Owned Brand

Ampd Bros is a proudly 100% Australian family-owned brand, established in 2019. We pride ourselves on our local roots and dedication to our community. When you shop with us, you're supporting a business that values Australian craftsmanship and customer service.

Expert Support and Unmatched Service

Our team of industry-skilled experts is available five days a week to provide you with personalized, knowledgeable assistance. With nationwide sales and service coverage in over 70 locations, you can rely on Ampd Bros for exceptional support wherever you are. We also offer a comprehensive 2 year nationwide warranty on our range of Ampd Bros Bikes, ensuring peace of mind with every purchase.

Innovation and Performance

As Australia's First and Original Aussie fat bike brand, we are pioneers in pushing the boundaries of design and performance. Our products are crafted in conjunction with the industry's top experts, ensuring every ride is both reliable and exhilarating. With Premium 21700 Samsung battery cells that are 30% larger than those of other brands, our bikes deliver unmatched power and longevity.

Convenience and Reliability

We understand the importance of staying on the road, which is why we maintain a full inventory of parts at all times. Our Fast and FREE Delivery service ensures you receive your bike quickly and our commitment to premium quality means your bike is tried, tested and proven over the years. Plus, with interest free financing options up to 36 months, you can ride now and pay later.

Inspiring Bold Adventures

At Ampd Bros, our core value is to inspire people to "Ride Bold and Beyond Ordinary." With a track record of over 25,000+ satisfied customers, our fat bikes and beach cruisers are designed to elevate your riding experience and take you on unforgettable journeys.

Join the Ampd Bros family and experience the difference of riding with a brand that prioritizes quality, innovation and customer satisfaction.

Ride bold. Ride Ampd Bros.

Order before 12pm, your order will be dispatched same business day!


48V 25AH Samsung
Premium 21700 Cells

Range ⚡️

Up to 100km+
Varies on Ride Use

Top Speed 🚴‍♂️

Up to 50km/h
Off Road Use Only

AWD Hub Motor's ⚙️

Dual Bafang 1,000W
95N.m High Torque



Introducing the all 2024 NEW Series 3 - ACE-X DEMON AWD Dual Motor Electric Bike - Get ready for an exhilarating journey! 🚀 Inspired by our renowned ACE-X Model Range, the ACE-X DEMON is a high-octane marvel loaded with an array of exciting features.

Diverging from its predecessor - the ACE-X PRO, the S3 DEMON is a true powerhouse. It boasts Dual 1,000W Motors, combining to produce an astonishing 2,000W of power! But there's more to it than just that - we've integrated Dual Suspension and an insanely bright 1,700 lumen Headlight, elevating your ride's comfort and visibility to unprecedented levels.

Designed in conjunction with our in-house family team and continuously sought after since its debut in 2019, the ACE Bike continues to create waves nationwide.

Loaded with premium features and celebrated year after year as Australia's favourite fat tyre bike the ACE range boasts a Shimano 7 Speed Derailleur, vibrant colour options and a cutting-edge battery system with our Latest GEN3 Aluminium Battery which encompasses 21700 cells that are 30% larger than our competitors, paired with a Smart BMS for optimal performance and safety.

What's New for 2024?

  • NEW GEN3 Battery with Tail & Brake Lights
  • Increased Battery Capacity to 25AH
  • Updated 30% Larger Battery Cells to 21700 Premium Samsung Cells
  • Software Enhancements to Display Controls and Design
  • Revised Suspension Design to Enable 115mm of Seat Height Adjustment while also allowing integration of our new Optional Frame Cargo Basket
  • New Plush Quilted Seat and Improved Huntsman Puncture Resistant Tyres
  • Introduction of the All New Demon Thunderbolt Special Edition

Embark on any adventure with the ACE-X DEMON, featuring our iconic high cross bar "X" frame design, an adjustable top coffee cup/bottle holder, a spacious two-person seat, and a massive Removable Samsung Battery 💥 that delivers an astonishing range on a full charge. Combined with Bafang's High Torque Motors, your exploration knows no boundaries!

Fearlessly conquer any terrain with a staggering 190Nm of Combined Torque, whether you're tackling beaches, hills, dirt tracks, grass, or pavement! The standard Pedal Assist ensures effortless cruising, but with our Off Road Throttle Kit, you can glide effortlessly. The 7 Speed Shimano Rapid Fire trigger shifter and altus transmission ⚙️ provide lightning-fast gear shifts for precise control.

Crafted from lightweight aluminum, this bike not only resists rust but also effortlessly handles demanding conditions. Experience unparalleled freedom with the ACE-X DEMON - effortlessly switch between motors using the 3 Way Motor Switch! Choose to ride with the Front Motor Only, Rear Motor Only, or unleash the Dual Motors for a dominant hill-climbing performance! 🏞️💨

Checkout the Range of Options & Accessories for your New ACE Bike or need help customising your bike? Speak to our Friendly Team on what works best for you.

Remember this Electric Bike is exclusively designed for Off Road Private Property Use Only.

Reviews (17)

Customer Reviews

Based on 17 reviews
john Odonnell
ace demon just ace.

you pay for what you get,not a cheaply made e bike,only time will tell but im so happy with my purchase ,to be used for stealth type hunting on unsealed tracks ,no noise no smell ,and ive got solar battery storage so ive got power from the sun,thx ampd bros.

Kris howarth

This Demon X daul motor electric bike is unreal to ride and has plenty of power even for a heavier rider.
AMPD BROS where get to deal with good communication and fast delivery highly recommended

Lachy Dunnicliff
Demon ace dual

Love the bike, easy to assemble

Ash Z
Ace Demon MKII does not disappoint!

I know that Amp'd Bros claim that the dual 1000W motors in the Ace Demon MKII eats hills for breakfast, but I didn't expect just how easily it would pull my heavy frame up some of Hobart's steep hills! The suspension makes for such a smooth off road ride and the big comfy seat is great for a long cruise along the waterfront tracks. If you're on the fence about getting one, just do it.

Kane M
Demon X lives up to the hype

The Demon X is fantastic so far, I’ve been riding for a few weeks and can’t fault it. Dual motors make a world of difference especially on soft dirt and the suspension makes pretty much anything a smooth ride. Taken some pretty decent trips on it and haven’t used more than half the battery yet. Had a small issue with the derailleur hanger from shipping and the support guys knew what it was and how to fix it pretty much instantly.



Speed & Range

  • Range 100km* (Single Motor Only)
  • Pro Top Speed 25km/h (or Unlock up to 50km/h for Private Property Use)
  • Demon Top Speed Up to 50km/h+ (Off Road Private Property Use Only)


  • Standard 48V / 1,200Wh, 25AH
  • Samsung Premium 21700 Lithium cells
  • Battery is removable and can be charged in bike or separately. 

Ride Modes

  • Mode 1 Pedal Assist mode: Adjustable pedal assist performance settings from 1-5 or can also be changed to 1-3 or 1-9
  • Mode 2 Walk mode: Idles bike up to 6km/h to assist with moving bike by holding the "-" button on the keypad
  • Mode 3 Throttle mode: Available when Optioned with the Off Road Throttle Kit


  • Hill Ability Up to 30º Degree / 60% Incline PAS
  • Seat Custom Large Quilted Plush Dual Seat for 2 Riders
  • Warranty 2 Years (1 Year on Batteries)
  • Ace Pro Headlight Ampd Bros Signature 800lm LED Light with DRL
  • Demon Headlight Upgraded PRO Front LED 1,700lm Headlight with DRL 
  • Lights Rear LED Brake Light inbuilt to battery pack
  • Grips Velo Wide Comfort
  • Bell Yes


  • Standard Tektro Hydraulic Disc
  • Discs 180mm
  • E-Brakes Yes Motor Safety Cut Off


  • Colour LCD Multi-Function with USB, ODO, Trip, Battery Level, Speed etc


  • Ampd Brothers Custom - Best-in-class power density and state-of-the-art motor control algorithms.


  • Motor Type Bafang RMG 062D & 063D Latest Generation (Released 2023)
  • Ace Pro Motor Single Rear Hub Drive 1,000W
  • Ace Demon Motors AWD Dual Drive Hub 1,000W Motors Front & Rear (2,000W Total) 
  • Ace Pro Torque High Torque 95n.m
  • Ace Demon Torque High Torque 190n.m (Combined)
  • Transmission Shimano 7 Speed with Rapid Fire Micro Shifter
  • Derailleur Shimano Altus
  • Pedals Wellgo Alloy - Black
  • Chain KMC Z Series High Performance


    • Frame Aluminium - "X" Step Over Bar Design
    • Handlebars Aluminium Motorcycle Inspired with Adjustable Height 
    • Fenders Matte Black Aluminium


    • Standard Front Independent & Rear Adjustable DNM

    Wheels & Tyres

    • 20x4.0" Vee Tire Huntsman Puncture Resistant All Terrain Tyres


    • 8.5hrs for 25Ah Batteries with Standard 3A Included Charger
    • Optional 5A Fast Charger Available


    • Overall Length 1,800 mm
    • Handlebar Height 1,140 - 1,190 mm
    • Handlebar Width 660 mm
    • Seat Height 850 mm Fixed Height
    • Seat Length 600 mm 
    • Ground Clearance 270 mm
    • Wheel Base 1,160 mm
    • Rider Height Ideal for Riders up to 200cm Tall


    • N.W of 25Ah Battery 6.25 kg
    • N.W of ACE Pro + Battery 44.4 kg
    • N.W of ACE Demon + Battery 49 kg
    • Max Loading 150 kg


    • In Box Bike, 48V Battery, 3A AUS Charger, Front Headlight, Basic Tool Kit, Manual, Pedals, Fenders, Seat & Kick Stand.

    *Range Achievable may vary based on loading, motor use, throttle/pas, terrain, weather conditions and many other factors. 

    Watch the Video

    Key Features

    Core features of ACE Demon
    Designed for Off Road Use Only.

    ACE-X Demon Dual Motor Electric Bike

    Built with the Best

    2,000W All Wheel Drive

    Dual Suspension

    Premium Battery

    Our latest 3rd Gen Aluminium battery now features Premium Samsung 21700 Cells (30% Larger), improved water resistance, docking station and Smart BMS with Auto Sleep mode to protect your battery! It is also removable, lockable and has a Brake & Tail Light function!

    Driven by Bafang

    As the industries leading manufacturer of e-bike motors, it makes sense to partner with Bafang. Renowned for their impressive levels of Torque, Performance and excellent reliability, Bafang hub motors will challenge any expedition with ease.

    Top Cup Holder

    A signature and an essential addition to the ACE-X model range. Carry your morning brew easily with the Frame mounted Cup Holder which is completely adjustable for those larger bottles or smaller coffee cups! Note: Not available on ACE-S Models

    Premium LCD Display

    Exclusive to Ace Pro & Demon Series, our Custom 2nd GEN LCD Colour display. Featuring a bunch of awesome new functions such as Automatic sensing headlights, estimated range remaining, battery %, motor output plus loads more!


    The ultimate in ride comfort - our custom DNM Adjustable Rear Shock, designed exclusively for S3 PRO & Demon Models! Plus dial in your rebound or even adjust seat height preferences up to 115mm to suit your adventure ahead.


    XL Rear Rack

    Carry more gear than ever before with our all new XL Rear Racks. Suitable for Child Seats, Baskets and loads more! Available now for all ACE Series 3 Bikes.

    Frequently Asked Questions


    What comes in the Bike box?

    In all our Adult Ampd Bros electric bikes you'll find almost everything you need to get started, even a Free Pump! You'll also find...

    • Your Bike
    • Fenders (on applicable models)
    • Headlight 
    • Bonus Ampd Bros Carry Bag with all your gear inside! Such as..
    • Tyre Pump
    • Basic Tool Kit
    • Standard AU Charger
    • Ampd Bros Key Ring
    • Instructional Manual with links to Instructional videos
    • Plus a Bonus Ampd Bros Sticker!

    You won't get that kind of love with other brands!

    Can I unlock my bike's performance?

    Yes sure you can unlock your bike to the maximum speed or watt output the motor is capable of producing.

    But take note of the regulations in your area as doing so may deem your bike legal for off road private property use only.

    Be sure to check the speed limit in your area but typically speaking exceeding 25km/h is not legal practice in most states.

    Checkout our Tutorials page on how to do so in your bikes display controls.

    Can I add a throttle to my bike?

    Yes sure! We do have them available as optional accessories here, but keep in mind throttles are only legal on Private Property only hence why we do not include them with any of our bikes.

    Are E-Bikes legal to ride on the road?

    Almost all Australian states follow a similar basis of rules which are established off the European standard EN15194.

    In essence all e-bikes must;

    • Not exceed 250W (Some states eg. NSW is 500W)
    • Be propelled purely by pedal assist only and the pedals have to be used to keep the motor operating (a pedalec)
    • Must not be operated purely by Throttle
    • Must not be capable of exceeding 25km/h 
    • Abide by local law such as, wearing helmets, riding within speed limits in set areas etc

    So the short story is that e-bikes are legal to use in Australia yes! Also with this in mind means you do not require any special licensing to ride!

    However be sure to check with your local authority as to any other regulations in your area.

    How long is your warranty?

    All our Ampd Brothers Adult range of electric bikes come backed by our 2 Year Nation wide warranty or 1 Year on Kids bikes! So you can ride worry free always! 

    For all other products see our warranty page for more info.

    Checkout the full terms and conditions here.

    Where can I view your Bikes?

    Our head office is located at:

    71 Dover Drive, Burleigh Heads 4220 QLD, AU

    However we have a bunch of dealers across Australia who carry our range and can also provide after sales support.

    Checkout our list of dealers here and be sure to give them a call to check stock availability, they may even be able to order a bike in for you to view otherwise. If not be sure to call us and we may be able to arrange for you!

    What is an "X" and "S" model?

    Simply put an "X" model is a Cross bar step over frame design, where as our "S" models are step through frames.


    How does my bike come delivered?

    All our E-Bikes come securely boxed and are shipped 80% assembled and do require some assembly. Should you need assistance you can checkout our YouTube for assembly videos or you can also refer to a store near you for bike builds and service.

    How long will it take to receive my order?

    Standard shipping normally takes 3-5 days. Express shipping is available on all small domestic orders (for an additional charge). 

    Bulky freight such as E-Bikes will typically take substantially longer to deliver as more manual handling is required so with this in mind on average to most major cities is approx a 5-10day's. For more rural areas, NT, WA or TAS you could expect to see 14 days or more for your order to arrive.

    International shipping times depend on the products and destination.

    ACE-X Demon Dual Motor Electric Bike






    Step Over - X


    48V 25Ah



    Motor Type

    Dual AWD Hub

    Motor Size

    Dual 1,000W

    Peak Output


    Top Speed



    Dual Suspension


    View product