The Ultimate
All-Terrain Fat Bike

Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike
Challenger Electric Mountain Bike

Challenger Electric Mountain Bike

Regular price$5,990.00
  • In Stock Online, Ready to Ship
  • No Stock Available, Contact Us to Confirm
  • 2 Year Nation Wide Warranty!
  • FREE AU Delivery on this Bike!
  • Same Day Dispatch before 12pm
  • Nationwide Sales & Service Agents
  • Direct Aussie Tech Support Mon-Fri
  • 24 Months ZIP Interest Free Available
  • Aussie Family Owned Brand Est. 2019
  • Original Australian Designed Bikes
  • Australia's Most Powerful E-MTB

Huge 1,300lm
LED Headlight

DNM Dual


Meet our Most Powerful Mountain Bike Ever! It may have a bold name, but don't be fooled - it certainly lives up to it... The all-new Challenger Dual Suspension, Mid Drive Fat Tyre E-MTB Bike. 🚲 Sleek design and durable construction seamlessly blend to deliver an E-Bike that will take you off the beaten track and beyond. 🏔


Prepare to take on all kinds of terrain as your journey on the Challenger E-MTB Bike begins. Built from the ground up using only premium components, this is a bike that can rise to any challenge. The high-torque, 1,000W Bafang Mid-Drive Motor will power you through the outback while the Dual DNM Suspension System delivers responsive control for an adrenaline-filled ride. Fly down the mountain trails knowing the Tektro 4 Piston Hydraulic Brakes will give you the ultimate in stopping power. You’ll also enjoy confident traction riding The Challenger thanks to the Kenda 26x4” Fat Mud Tyres that come fitted standard.

Crush mountains, deserts, rainforests, or even just your daily commute with The Challenger E-MTB Bike. Fitted with a Full-Colour LCD Display, 9 Speed Shimano transmission, 1,300 Lumen high performance headlight, premium Samsung Battery and built with a super-light aluminium construction, The all-new Challenger is your ultimate vehicle for all-terrain adventures.

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


  • 17.5AH Samsung Battery
  • Up to 70km Range
  • Step Over Design Frame
  • Mid Drive 160Nm High Torque Bafang Motor 
  • Huge 1,500W Peak Output Motor (When Unlocked)
  • 25km/h (or Unlock up to 50km/h for Private Property Use)
  • Tektro Dorado 4 Piston Hydraulic Disc Brakes


Speed & Range

  • Range 70km+ (PAS Cruising at 25km/h on flat paved road)*
  • Top Speed 25km/h (or Unlock up to 50km/h for Private Property Use)


  • 48V / 840Wh, 17.5AH Samsung lithium cells. Battery is also removable and can be charged in bike or separately.

Ride Modes

  • Mode 1 Pedal Assist mode: Adjustable pedal assist performance settings from 1-5 and is used in conjunction with ECO / Sport Modes
  • Mode 2 Eco mode: The ultimate mode for energy conservation
  • Mode 3 Sport mode: Ideal for maximum performance capabilities
  • Mode 4 Walk mode: Idles bike up to 6km/h to assist with moving bike
  • Mode 5 Throttle mode: Available when Optioned with the Off Road Throttle Kit


  • Hill Ability Up to 30% Inclines
  • Seat Velo Adjustable Height
  • Warranty 2 Years (1 Year on Batteries)
  • Lights Aluminium Front 10W/1,300lm High Performance LED
  • Grips Velo 
  • Bell Yes


  • Front and Rear Tektro Dorado 4-piston hydraulic
  • Discs 203mm
  • E-Brakes Yes Motor Safety Cut Off


  • Bafang Colour LCD Multi-Function (ODO, Trip, Battery Level, Speed etc)


  • Bafang, Best-in-class power density and state-of-the-art motor control algorithms.


  • Electric Motor Bafang Ultra M620 Mid Drive Latest Generation
  • Power Output 250W Limited - Can be Unlocked to 1,000W for Off Road Private Property Use
  • Peak Output 1,500W+
  • Torque High Torque 160n.m
  • Transmission Shimano 9 Speed with Rapid Fire Micro Shifter
  • Derailleur Shimano Altus
  • Pedals Wellgo Alloy - Black
  • Chain KMC Z Series High Performance


    • Frame Aluminium - Step Over Design
    • Handlebars Promax 6061 aluminium


    • Front DNM Adjustable Coil Spring Fork with 160mm Travel
    • Rear DNM Pneumatic Air Adjustable

    Wheels & Tyres

    • 26x4.0" Kenda Krusade Sport Fat Mud Tyres


    • 8-10hrs with Standard 2A Included Charger


    • Overall Length 2,100 mm
    • Handlebar Height 1,120mm
    • Handlebar Width 670mm
    • Seat Height 870-1,070mm Adjustable
    • Ground Clearance 290 mm
    • Wheel Base 1,330 mm
    • Rider Height Ideal for Riders up to 210cm Tall


    • N.W of Battery kg
    • N.W of Bike 38 kg
    • Max Loading 120 kg


    • In Box Bike, 48V Battery, 2A AUS Charger, Front Headlight, Basic Tool Kit, Manual, Pedals, Seat & Kick Stand

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

    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 Retailer.

    Warranty Periods:
    • 2 Year's on 2023 Ampd Brothers Electric Bike Models (1 Year on Batteries) Sold from December 1st 2022 onwards
    • 1 Year on Pre 2022 Electric Bikes, Stacyc, Surron, KAA Sumo, Electric Scooters & 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 Warranty & Returns Click Here.

      30 Day Ride Guarantee & Returns
      We are so confident in our products that we offer a Ride Guarantee, which ensure’s that should you not be satisfied with a quality, manufacturing or not fit for purpose related issue on the product purchased it will be rectified or if the item is new, un-used and still in packaging it can be returned for a full refund.

      External causes/matters or changes of mind are not applicable under this guarantee for return or refund. 

      If 30 days have gone by since your purchase, unfortunately we cannot offer you a refund or exchange.

      Please see the Full Terms & Conditions on our Returns and Warranties Page

      Domestic Australian Shipping

      We Ship 🚚 FREE in AUS for orders over $100! For orders under $100 a Flat Rate of $8 will Apply. More options and express services are available at the Checkout. This includes Free Delivery on all E-Bikes, Skateboards & Scooters (under 50kg)!

      Christmas Delivery

      For all Christmas deliveries please take note that no Small Articles will be guarantee'd for Christmas delivery from DEC 15th. For all Bikes and bulky Articles will not be guarantee'd from DEC 8th (WA,NT & TAS will not be guaranteed from December 1st) so be sure to place any orders before these periods or visit a local store for availability in your area.

      *Free Shipping Exclusions:
      Any Orders under $100 or Oversized Items Over 50kg will incur a $199 Freight Fee to WA, TAS & NT. Items in particular to this surcharge are Sur-Ron Motorbikes & Sumo KAA Speed Fat Boy Scooters.

      Fee's will also apply to Australian Remote Locations. Eg. Broome, Macquarie Island, Lord Howe, Thursday Island, Kangaroo Island, Russel Island, Rottnest etc) and we reserve the right to cancel any order to such location or adjust shipping fee's where necessary, we recommend Contacting Us for a Quote if you believe you may be subject to such charges.

      Delivery Times vary from 2 ~ 14 Business Days (Excludes Public Holidays & Peak Periods). Remember - Large and Bulky items require more manual handling and may not arrive on estimated delivery day provided by couriers as these dates are based on Small Items.

      *Additional Fee's May Apply for Missed Deliveries - Please Ensure you ship to an attended address to avoid any missed delivery.

      All orders are packed and shipped securely boxed and items such as bikes, scooters or SurRon motorcycles will require some assembly and/or fitting - refer to our assembly page for assistance, or contact your local dealer to book in for assembly (Assembly fee's may apply).

      Note: We do not Ship Large items to any P.O Boxes or Parcel Lockers. (Small Articles can be delivered to P.O Boxes via AusPost when selected at checkout)

      International Shipping

      Currently we only ship Selected items to New Zealand, UK, Europe and USA for shipping prices please refer to the checkout or Contact us for a Quote. All Prices & Rates are charged in AUD$ and exclude any import taxes or charges.

      For full details on Shipping & Delivery please refer to our Shipping Page or Contact Us if you are not sure.

      Watch the Video

      Built with the Best

      Bafang Ultra

      1,000W Motor

      Incorporating Bafangs latest generation Ultra Mid Drive motor, the Challenger is the most capable High Performance, Fat Tyre Bike on the market with 160n.m of torque, no expedition will go un-matched. Note: Limited to 250W and requires programming for un-restricting for Off Road Use.


      Colour Display

      With multiple modes and functions, Bafang's Intelligent Display enables ultimate control of your bikes performance, information and ride statistics.

      Regarded as

      The Most Powerful
      E-MTB Available to Date


      In all our Ampd Bros electric bikes you'll find almost everything you need to get started including...

      • Your Bike
      • Headlight (on applicable models)
      • Basic Tool Kit
      • Standard AU Charger
      • Instructional Manual with links to Instructional videos
      • Plus a Bonus Ampd Bros Sticker!

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

      Yes sure you can unlock your bikes motor to maximum output of 1,000W or to the bikes maximum speed. But take note doing so will deem your bike not legal for use on public property and exceeding 25km/h is not legal practice in all states.

      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.

      In virtually all states you do not need a licence or require any registration to ride an E-Bike, although if you are found to be riding under the influence of alcohol or exceeding the 25km/h speed limit for example, you may be penalised against your drivers licence.

      All Australian states follow the same 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! 

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

      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.

      Generally bike delivery will take longer than most small size articles as they are bulky and require more manual handling so on average to most major cities is approx a 5-10day delivery time. For more rural areas and NT, WA or TAS you should expect to see 14 days or more for your order to arrive.

      We have a bunch of dealers across Australia who carry our range and 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!

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

      Checkout the full terms and conditions here.

      Our bikes are resistant to approx IP65 and are extremely weather resitant to rain etc. however as best practice we always advise to avoid water as much possible as even though they are extremely capable, water can create a lot more maintenance than necessary sooner rather than later!

      Unfortunately we only offer selected tyres pre-installed as standard on our bikes. However we do have a huge range of tyres available as additional parts for all our bikes including street, mud or even white wall tyres!

      Checkout the tyre range here.

      Customer Reviews

      Based on 4 reviews
      Chris Beddoe
      Almost a motorcycle

      So much fun, we live in a hilly area and it’s so funny flying past professional riders up the hills

      Haydn Jones
      Challenger Bike

      Great bike, very comfortable with the awesome suspension which makes it good for long rides, it also smashes hills with the high torque motor love riding this bike, heaps of fun.

      Jeremy Ashworth-Preece
      Big Solid a great ride

      The bike arrived promptly and was well packed. Putting it together was pretty straightforward. This bike is very well made with a high quality paint finish. It has an awesome Befang motor with heaps of grunt for steep hills.
      The ride is supremely comfortable thanks to the huge fat tyres and high spec shocks. This machine is an absolute beast especially for bigger riders I’m 6ft 4 inches tall. You definitely get what you pay for here.

      Brian O’Donoghue

      Bought one in February. Great bike! Real head turner. Certainly got some get up & go.

      The Ampd Difference


      Need help? Speak with a local qualified tech, 5 days per week or visit one of our many local dealers Australia wide.


      Developed meticulously in conjunction with our team of experts for over 5 years, our products are built to last. We don't do cheap, we do the best.


      We know our products are tougher than anyone else's, so we back them confidently for up to 2 Years regardless of where you live!

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