★★★★★
I've had my kit for over a year and use it for my 15km daily commute. It's been rock solid with no issues at all.
Australian Road LegalSave $225.00Ships from Adelaide
TAV Systems · MD250 Series
TAV MD250 Mid-Drive eBike Conversion Kit – 250W, 80Nm | Australian Road Legal
★★★★★5.0 · 47 verified Australian buyers
$625.00
$850.00Save $225.00
Tax included · Free shipping on orders over $299 · Afterpay available
Battery not included. Compatible with any 36V eBike battery (14.5Ah recommended). Available from most Australian eBike retailers — contact us for help finding one.
Free shippingorders over $299
12-month warrantyACL compliant
Ships fromAdelaide, SA
250W · 25 km/h · Road legal in
NSWVICQLDSAWATASACTNT
What you get
Everything to go electric.
One kit converts almost any bike into a road-legal Australian e-bike. No welding, no permanent modifications.
250W Rated Motor
TAV MD250 mid-drive. 500W peak. Inbuilt controller and patented cadence sensor. Fits 68–73mm bottom brackets.
Road legal AU80 Nm Torque
More than enough to haul cargo, climb Adelaide Hills, or stop breaking a sweat on your daily commute.
5-Level Pedal Assist
Cadence-sensing pedal assist from 1 to 5. Tops out at 25 km/h in line with Australian road rules.
AS/NZS compliantColour LCD Display
Bright 3.5-inch screen. Speed, distance, battery level, assist mode. Readable in full Australian sunshine.
E-Brake Safety Cut-Off
Brake levers cut motor power the instant you squeeze. Standard safety feature required on road-legal e-bikes.
Safety built-inIP65 Waterproofing
Jet-wash rated. Ride through rain, cross flooded paths, hose it down after a muddy trail — no worries.
DIY-Friendly Install
Full PDF manual, YouTube installation video, and direct support from our Adelaide team if you get stuck.
Everything Included
Motor, display, brake levers, throttle, crank arms, speed sensor, chainwheel, all cables and tools. Just add a battery.
Real-world installs
Works on almost any bike.
From daily commuters to recumbent trikes to cargo bikes — if it has a 68–73mm bottom bracket, the MD250 fits.
Daily commute
For Every Day
First motor off the production line — still running daily on Adelaide roads 2+ years later. No maintenance issues.
Custom build
For DIY Conversion
Installed by a bike dealer for a customer wanting a bespoke build. No extra components, no frame modification.
Recumbent
For Recumbent Bikes
80Nm makes recumbent trikes feel nimble. Custom display mount available for low-slung handlebar setups.
Cargo and specialty
For Specialty Bikes
Replaced failed hub motors on a wheelchair-carrying cargo bike in McLaren Vale. More torque than the original setup.
Customer reviews
What our customers say.
47
verified Australian buyers · 5.0 average rating · customers from every state
★★★★★
I recently converted a recumbent trike with TAV's motor and the install was super easy. The team helped me pick the right battery too.
★★★★★
It feels great and cycling to the office and back is so easy now. The motor is quiet and the display is clear in sunlight.
Full specifications
Technical details.
Motor and Performance
Model
TAV MD250
Rated power
250W
Peak power
500W
Peak torque
80 Nm
Top speed (assist)
25 km/h
Pedal assist levels
5
Voltage
36V
Waterproofing
IP65
Bottom bracket fit
68mm – 73mm
AU road compliance
250W · 25 km/h ✓
What is in the box
TAV MD250 mid-drive motor
3.5 inch colour LCD display
E-brake levers (pair)
Ergonomic thumb throttle
Crank arms left and right
Wheel speed sensor
Chainwheel and chainguard 44T
Waterproof cable 1T5
C-Clamp adaptor
Lock-nut assembly tool
Installation manual
Battery not included
Before you buy
FAQ
The questions we get asked most by Australian buyers — answered plainly.
Yes. The TAV MD250 is rated at 250W and limits pedal-assisted speed to 25 km/h — which meets the national standard for power-assisted bicycles under Australian Road Rules. This means it is treated as a bicycle, not a motor vehicle, and does not require registration or a licence. Always check your local council bylaws for path and trail restrictions.
| State / Territory | 250W · 25 km/h | Helmet required |
|---|---|---|
| NSW | Road legal | Yes |
| VIC | Road legal | Yes |
| QLD | Road legal | Yes |
| SA | Road legal | Yes |
| WA | Road legal | Yes |
| TAS | Road legal | Yes |
| ACT | Road legal | Yes |
| NT | Road legal | Yes |
The kit is compatible with any standard 36V eBike battery. We recommend a 14.5Ah pack for a range of approximately 80–100km on pedal assist. Smaller 7.8Ah or 5.6Ah packs are lighter options for shorter commutes.
You can purchase a compatible battery from most Australian eBike retailers or contact us at store@tavsystems.com.au and we'll help you find the right one.
The MD250 fits bikes with a 68mm or 73mm threaded bottom bracket shell — which covers the vast majority of Australian road, mountain, hybrid and cruiser bikes. It does not currently fit bikes with press-fit bottom brackets (common on some carbon-frame road bikes).
Please contact us before purchasing if you're unsure. We're happy to confirm fitment from your bike's frame details.
Most people with basic mechanical skills install it in 2–4 hours using our step-by-step PDF guide and YouTube installation video. The lock-nut tool is included in the kit.
If you're not comfortable working on your bike, any local bike shop can install it. Several Australian bike dealers have purchased and installed our kits for customers. Contact us if you'd like a recommendation near you.
The kit comes with a 12-month warranty against manufacturing defects. As an Australian company operating under the Australian Consumer Law (ACL), you are also entitled to consumer guarantees that apply regardless of any warranty we provide.
For warranty claims, contact us at store@tavsystems.com.au — we're based in Adelaide and respond within one business day.
We ship from our Adelaide warehouse. Standard delivery is typically 3–7 business days for metro areas, and 5–10 days for regional WA, NT and Far North QLD. Free shipping applies on all orders over $99 AUD. Express options are available at checkout.
Ready to go electric?
The MD250 kit is in stock and ships from Adelaide. Free shipping on orders over $99.