Bidding has ended on this item. The seller has relisted this item or one like this.

Posts to:
Posts to:

Details about  AFT Motorised 500w Electric Motor Bike Bicycle Kit

See original listing
AFT Motorised 500w Electric Motor Bike Bicycle Kit
Item Ended
Item condition:
20 Jan, 2012 11:02:42 AEDST
Winning bid:
AU $499.00
1 bid ]
Will post to United States. Read item description or contact seller for postage options. | See details
Item location:
Melbourne, Australia

More chances to get what you want


Feedback on our suggestions


eBay item number:
Seller assumes all responsibility for this listing.

Item specifics

New: A brand-new, unused, unopened, undamaged item. See the seller's listing for full details. See all condition definitions- opens in a new window or tab


AFT Motorised 500w Electric Motor Bike Bicycle Kit



NEW 2012 pricing and New products release
Our AFT 500w 24v Brushless Geared centre Crank drive give you that extra speed and torque need to go hill climbing offroad use only.
If you work in the city, ditch the second car and ride to work and save up to ~ $800 per month for insurance, registration, parking costs, fuel cost , depreciation of motor vehicle etc.   With these savings per month the payback of an electric bicycle can be as short as a few months time !
Quote : "The figures showed that if a 45-year-old ditched a car for a bicycle and saved the money into an account with 6 per cent interest, the person would save $358,000 by retirement age. For a person aged 25, the saving would be $1.04 million.
Contact us and we can send you a copy of this recently published news article in Melbourne.

We also have available 200w, 500w motors at 24v .

And for the most demanding race and offroad conditions we also have available a massive power 960watt 36v Motor in the same size format.

  All our motors are of modular mounting construction from the 200w  24v internal motor to our 960w external controller motor

Pricing for complete conversion kit:

200w= $489

500w= $634

960w= $719

 Contact us for stock availability details on=


DON’T SETTLE for any other cheap low quality EBIKE kits, settle for the best and have the choice of using it on your favourite bicycle.

Most ebikes on the market today are of very low quality and also use heavy components compared to most mid to high end road bicycles. By using your own or choosing the bicycle yourself you can get the best of both worlds!


To assess the quality of an electric bicycle, one would normally assume the heavier the better ! But in reality it proves the opposite. It’s quite easy to make a bicycle with low quality components that are bulkier and heavier. But it is a lot harder to make a bicycle lightweight and durable at the same time. Most cheap ebikes available on the market today fall into this category.

Also since motor assistance is only allowed to be relatively low to get the best speed, range and response out of your bicycle,  it needs to be as efficient and light as possible. This is why we recommend a quality known brand name bicycle like the Apollo brand mountain bike that retails around $5-600 AUD as a minimum. We have used this in our comparison table below Total weight ready to ride vs today’s competitors e-bikes: (AFT mid drive conversion is in red)



Our kit is comprised of the best quality components sourced globally and custom engineered for Australian road use.



  • COMPLETE Installation KIT includes all the hardware you need to install this kit onto your bicycle. If you don’t have the special tools to install it, we have them also on a 2 week tool rental -see sales options below. To make installation even easier we will also provide detailed colour Step by step photo instructions on how to install this kit. Nearly anyone can install this kit with these instructions (it’s that easy!), but we do strongly recommend that a qualified bicycle technician performs this installation.


  • Brushless motor has higher efficiency per weight than brushed motors and there is no brushes to wear out , so long term service costs are lower.

500W motor specifications

* Max speed 3600Rpm
* Rated speed 2500Rpm
* Rated output 500W
* Max output 700W
* Rated Torque 20Kg-cm
* Max Torque 42Kg-cm
* Rated Amp 24A
* Insulation class E class
* Driver Built in
* Control method PWM
*Ambient temperature -15C~40C *Efficiency: 97%
* weight 2.2Kg

  •  USES ALL EXISTING BIKE GEARS in assist mode, Hub motor conversions only use 1 gear for the ebike motor, some other central drive kits only utilise 1 of the front gears. Our kits uses 2 front gears and all of your rear gears. For climbing very steep hills and accelerating quickly you need these gears, especially since in Australia the 200w power limit is quite low. You need all the torque a 200w motor can produce, and peak torque is most often at mid to high rpm of the motor. With this kit you simply change gears to allow the motor to speed up and provide more torque than you can with a single speed hub motor. Single speed hub motors cannot do this they suffer from SLOW acceleration, low hill climbing ability and VERY bad efficiency i.e high power consumption per km


  • Crank freewheel allows pedalling flexibility . This means the pedals do not always need to spin with the motor, you can pedal if you want to. You can let the motor do all the hard work and sit back and relax or if you like to get more exercise you can reduce the throttle input and pedal more to get a more physical workout.


  • Low and central centre of Gravity, other electric bikes have the motor on the hub, either in the front or rear wheel, which affects the weight balance and manoeuvrability of the bicycle. Our Drive System has the motor and gearbox centrally and low in the frame to evenly distribute the weight as low and central as possible. Hence the bike will feel more like a traditional bike, which is also more important at high speed. Additionally we recommend using our light weight performance Lithium ION bottle batteries option to provide even better Low centre of gravity, as it’s mounted inside the frame.


  • Complete with a new Cartridge sealed bottom bracket that allows fitting to nearly all bicycles, our sealed cartridge bottom bracket is far superior to our competitors who you use a simple open axle and exposed bearing that are easily contaminated and due to the high load of an ebike these bearings can quickly fail.(If you have an ISIS style please contact us )


  • Our exclusive optional  AFT Cycle Analyst has cruise maximum speed limiter and Max power current draw option . This is a plug and play module that gives motor assistance flexibility, for example if you would like your children to safely use the bicycle you can set the maximum speed or power lower then maximum to provide a safer more controlled assistance, or to extend your distance range, or if you would like more of a work out.



  • We are a registered Australian engineering business and will provide Tax invoice so you can buy with confidence. 



Safety features

  The motor controller has built in low voltage cut-out to protect your batteries from too deep discharges. Controller also has over temperature thermal motor cutout for protection.


SUITABLE FOR MOST bikes except

Frame design limitations:The kit is easily mounted on most diamond frame bikes with the supplied mounting hardware. The large angle downtube must be of ROUND shape profile and with a diameter smaller then 55mm to fit this kit. The kit is supplied with all parts listed below. The cartridge bottom bracket we supply suits 68mm bottom brackets. Other bikes may need some modifying and/or use our custom motor bracket spacer. Also some bikes that have unconventional suspension geometry mounts in the location where the motor mounts may not be suited. If you are not sure send us an email picture of you bicycle to confirm if it suits contact us prior to purchase.

 Tricycles, Recumbents bikes folding bikes, dropped handle bar bikes and some rear Suspension bikes  may have non conventional frame design so please contact us and send pictures of your bicycle.

Gear Shifters Limitations: because the kit uses a twist grip throttle, it is not possible to use on bikes that have twist grip gear changers. You can though quite easily change to a conventional trigger design if required with the help of a local bicycle shop.

Front Derailleur limitation: some bicycles have short throw front derailers that may or may not engage top gear correctly, hence a change to a longer throw derailer maybe required with the help of a local bicycle shop.

Parts list:

500 Watts Brushless Motor with 9.55:1 Planetary Gearbox and Internal Controller

Chain for motor to freewheel

14T motor Freewheel Sprocket

Motor Mounting Bracket w/ Spacers & Bolts

Motor chain tensioner

44T&44T&24T Tooth Freewheeling front Chainwheel

Quality sealed Cartridge Bottom Bracket

Left & Right Crank Arms

Twist Grip Throttle

Left and right Handlebar Grips

Battery Connecting Harness+plug

Mounting brackets with all the nuts and bolts required

Note: This listing is for the conversion kit only. Bicycle, Battery and Rack is not included unless specified

Shipping weight approx. 7KG.

Add $25 if you would like postage insurance for Australia delivery


12 months AFT warranty*


Performance UPGRADE options


STAGE 2 Package


EXCLUSIVE to AFT we have the best heavy duty freewheel on the market, custom machined for us for chainwheel freewheel operation. The  Heavy DUTY ACS crossfire freewheel custom conversion must be ordered at the time of purchase. Suits high mileage and high power ebike conversions.

  • Cold forged, rather than hot forged chromoly, CNC precision machined.
  • 3 pawl engagement (compared to 2 pawl with CLAWS) for a stronger hold, with the same, quick engagement every 12 degrees.
  • Tighter tolerances giving less wobble and less "play".
  • New matte silver that is corrosion resistant
  • Very low overrunning resistance
  •  Very quiet in freewheeling mode
  • Class leading twin angular contact bearings for extra stability and long term durability

Add $129 to standard kit price

B) NEW ACS crossfire 13t motor freewheel sprocket machined to bolt straight on. Recommend for high power and high voltage  setups to add extra durability ( same features listed above on the ACS crank freewheel) .Also reduces motor chain speed compared to standard 14T freewheel, which gives a more acceptable peddle cadence.

Add $109 to standard kit price

STAGE 3 Package

To get the most out of your ebike you need to be as light as possible, with your tyre pressures high to get maximum speed and distance per charge. 

This performance upgrade includes Lightened and drilled freewheel conversion kit and AFT Tyre pressure  maximum performance indicators. Add $109 to standard kit price

 STAGE 4 Package

New Available end of January 2012: Heavy duty custom steel mounting bracket kit for motor. Our new hduty bracket upgrade bolt's directly to the bottom bracket and down tube frame with an adjustable stainless steel clamp. The design suits any downtube diameter or profile, makeing an easy quick installation whilst the bottom bracket is off.  This is one of strongest and lightest bracket you can use, it will make aligning the chain line of the motor easy and you will have no problems with the motor moving around or losening over time. Also with this bracket their is enough adjustment to the mounting points that no chain tensioner is required . 

Steel with black zinc non rust finish

Add $129 to standard kit price

Stainless Steel anti rust version

Add $139 to standard kit price

 STAGE 5 Package

New Available end of January 2012: Heavy duty custom steel Crank freewheel adaptor to suits ACS crossfire and common Mountain bike 104BCD chain rings. With this upgrade you can easily change the motor sprocket on the freewheel crank with any of the commonly available 104 BCD chainrings.

Add $99 to standard kit price

 Provide your own motor 104 BCD Chainring or Add $69 for a 104 BCD 48T chainring






(Please Note: For all batteries please allow for extra postage costs and 1 week extra lead time )

1) BUDGET Battery Option= Battery 24v 12 AH SLA batteries with 240V Australian Charger  Add $289 (Suits 200w - 500w motors)




2)A) Performance Battery Option 24v 8Ah High current lithium battery packwith 240v charger Add $539 (Suits 200w - 500w motors)

EV 8 Ah24V LiFePo4 battery pack in bag+BMS+4A charger ( 2 hours) for 500w  motor

  B) Performance Battery Option36v 8Ah High current lithium battery packwith 240v charger Add $639

EV 8 Ah36V LiFePo4 battery pack in bag+BMS+4A charger ( 2 hours) for 960W

3) ANTI MARKING kit, if you are worried about scratching the paint on your bicycle on installing this kit in case you remove it one day, this option is for you, we have included some pre-assembly and surface protectants to help minimise the chances of any scratches , bare in mind scratches may still may occur  and we make no guarantee you wont get any scratches but it is a lot less likely.


4) Freewheel crank set with 48T&48T& 34Teeth   Add$ 35

5) MOTOR mount Spacer bracket5mm aluminium cut to size, on most bicycles there is enough play in the bottom bracket crank to adjust the chainline of the crank to be inline with the motor gear, however on some bicycle this may not be possible and hence to assist with this a custom 5mm spacer can be inserted to help move the motor towards the centreline of the bicycle. Cost $20+ postage fee, also if you have taken up the 2 week tool rental exchange offer we will also extend this time by 1 week to allow for this spacer to arrive.

6) Short term Tool rental,  We have made a special installation tool kit that gives you all the tools and consumables you will need to  install this kit for 5 days.  You may also need a knife to install this kit- for safety reason we have not provided this and most people will have a knife at hand. This includes the following 11 tools.


Item           Qty      Description

1)    1          Flat head screw driver

2)    1          Phillips head screw driver

3)    1          Ruler

4)    1          Set of Allen keys, Need 5mm and 3mm

5)    1          Size 10 metric Spanner

6)    1          Size 14 metric socket ½ inch drive

7)    1          Size 16 metric socket ½ inch drive

8)    1          Size 5/16” Imperial ring spanner

9)    1          Size 16 metric spanner

10)  1          Crank Arm removal tool

11)  1          Freewheel removal/tightening tool (optional if freewheel preassembled)

12)  1          Cartridge bottom bracket removal tool

13)  1          Chain Breaker tool

14)  1          Lubricating oil

15)  0          Rags/cloth also helpful  but due to their common availability have not been included

16)  0          Knife or scissors will be required, but due to safety reason and common availability they have not been included


 The tool rental cost is Add $ 59 for 5 days usage from the time of arrival and a refundable bond of $99 is required at the time of purchase. All tools need to be returned within 7-10 days in an undamaged condition and the bond will be refunded, if tools have been damaged or are missing deductions will be held from the bond amount.

7) Battery RACK, seat post mounted

Suits seat post diameter from 24.3mm/0.95inches to 31.4mm/1.23inches
  Maximum Loading: 10 kg

Add $49

8.) Motor cooling Fins, recommended for 500w motors and above.

Add $29


9) AFT Cycle Analyst


The world renowned Cycle analyst and wired for direct plug in to this kit.  



  1. Volts, Watts, Amps:The instantaneous electric power being drawn from the battery.
    • Amp-Hours, Watt Hours:The net energy that has been pulled from the pack since the meter was reset. The accumulated amp-hours let you know the remaining energy in the battery pack with far greater accuracy than a voltage or LED indicator.
      • Speed, Distance, Time:All of the basic features of a bicycle computer, including the average and maximum trip speeds, plus a total distance odometer.
        • Regen, Wh/km:There are several quantities this meter will calculate that you don't get with other instrumentation, such as the % extra range that was gained from regenerative braking, as well as the vehicle's average energy use in Watt-hours per kilometer or mile.
          • Peak Currents and Voltage Sag:Records the maximum forwards and regenerative currents as well as the minimum voltage on the battery pack.
            • Total Battery Cycles and Amp-Hours:Retains life cycle information on the vehicle's battery pack, such as how many charge and discharge cycles the pack has experienced and the total amp-hours that were delivered over its entire life.
              • Speed Limit:This has the utility of providing legal compliance to the speed cap imposed on ebikes in most jurisdictions. When used with a full throttle, it serves as a cruise control on the electric bicycle. It can also be beneficial to riders who want to increase their torque and power by using a higher voltage battery, without simultaneously increasing their top-end speed.
                • Current Limit:An adjustable amps limit is useful to prevent damage to the batteries from excessive current draw, to increase the range that you'll get on a charge, and to protect the motor controller and motor in setups that draws too many amps.
                  • Voltage Cutout:A low voltage cutout is used to protect a battery pack from being discharged too deeply, which can cause cell reversals in NiMH/NiCad packs, permanent cell damage in Lithium packs, and sulfation in Lead Acid batteries. The programmable low voltage rollback allows you to set an appropriate low voltage point tailored to your pack.

Note:this must be ordered at time of purchase so that throttle can be customised to suit direct plug in. 

Add $259

 NOTE: If you requires any of these sales options urgently please contact us to confirm stock levels of each item as their may be a 3-4 week lead time on items not in stock



Kits are designed for offroad or race use only unless specfied below:

EBIKE legality worldwide for On-road use

Less than 200W systems are the only road legal kits for use Australia and the UK

Less  than 250W systems are for use in Israel, India ,European union and other countries.

Less then 300W systems are road legal for New Zealand

Less then 500W systems are road legal for use in Canada

Less then 750W  to 1000w systems are road legal for use in USA ( varies by state)


We provide this information to the best of our knowledge at the time of publishing, but since these laws change in each country we take no responsibility on the legality of using this kit. When you agree to buy this kit you agree that we provide this guidance for  information only and it’s your responsibility to confirm with local authorities the legality of using this kit on public roads.


Riding any bicycle and especially a motorised bicycle can cause serious injury or death if not used appropriately and by following all the local road rules and safety guidelines of riding a bicycle on the road. If you agree to purchase this kit you also agree to take full responsibility for your actions and ride at your own risk and no legal responsibility to AFT tech.  It’s your own responsibility to take care out there and most IMPORTANLY wear a legal road helmet and the appropriate lighting if you will be riding at night time. We also advise that minors under 18 should not use this kit without the supervisions of Adults.

Terms and Conditions

Do not purchase if you do not agree to the following Terms and Conditions when purchasing. If you purchase this item you agree to the following terms and conditions:


*12 months AFT back to base Warranty Conditions

Warranty does not apply where:

  • Repairs are required because of normal wear and tear.
    • The electric kit has been abused, misused or improperly maintained.
      • Alterations have been made to the electric kit.
        • Repairs have been made or attempted by others
          • There is evidence of water damage, the motor is water resistant and not water proof, for additional water profiting we suggest to use a sealant around all joins and wire entries into the motor and controller.
            • The standard stage 1 freewheel option is only covered by warranty for motor power of 200w or less.

            Contact must be made to us within the warranty period to request a RMA number (Return merchandise authorisation number), and advice of the failure must be made before sending the goods back to base. Buyer must pay for all costs of postage to return item back to base. Once received and inspected, if the inspection shows the fault is caused by defective workmanship or material, we will repair or replace without charge or refund price of the failed component. If a component is repaired or replaced under warranty, the original purchase date will remain as the warranty start period.



            SALE OPTIONS at time of purchase only or for existing customers only:



Questions and answers about this item

No questions or answers have been posted about this item.

Place bid

Time left:
Current bid:
(Approximately ##1##)
Import charges:
Your max bid:
Your max bid:
By clicking Confirm bid, you commit to buy this item from the seller if you're the winning bidder.
By clicking Confirm bid, you are committing to buy this item from the seller if you are the winning bidder and have read and agreed to the Global Shipping Program terms and conditions - opens in a new window or tab. Import charges previously quoted are subject to change if you increase you maximum bid amount.
Resume bidding, if the page does not update immediately.
Place bid
Review and confirm your bid
Bid confirmation
FREE postage
See item description
(Approximately ##1##)
(Enter ##1## or more)
(Enter more than ##1##)
Your max bid:
Increase max bid
Place bid
Confirm bid
Increase max bid
Change bid
, you've been outbid. Don't let it get away - bid again!
, you're the highest bidder on this item. Good luck
, you're the first bidder. Hope you win!
, you're currently the high bidder, but you're close to getting outbid.
, this auction is almost over and you're currently the high bidder.
, you're the high bidder, but the reserve price hasn't been met.
Please enter your bid again.
Please enter a valid number as the bid price.
Enter an amount that is equal or greater than the minimum bid required. This can be found under the bid entry box.
Maximum bids can't be lowered once they're submitted.
This seller requires the buyer to have a PayPal account to purchase this item. Get a PayPal account here .
Your bid is greater than or equal to the Buy It Now price. We recommend you purchase this item via Buy It Now. If you still wish to bid, you may do so below.
Time left:
Current bid:
(approximately ##1##)
Your maximum bid:
(approximately ##1##)
Increase your maximum bid:
By clicking 1 Click Bid, you commit to buy this item from the seller if you're the winning bidder. Learn moreabout 1-click bid - opens in a new window or tab
(approximately ##1##)
Winning bid:
Starting bid:
Congratulations! The auction has ended and you're the winner.
The auction has ended, but the reserve price was not met.
Sorry, the auction has ended and you were outbid.
Good news, you're the high bidder.
Sorry, you've been outbid.
You're the high bidder, but the reserve price is not met.
Please enter a higher amount than the current bid.
Maximum bids can't be lowered once submitted.
Please enter a valid number.