FAQ

Please do not use a PO Box address due to our products being large and heavy.

• Most PO Boxes reject oversized parcels
• Even if accepted, Australia Post often redirects them causing delays
• Tracking can break or go missing once redirected
• This increases the risk of lost or returned orders

To avoid delays or lost shipments, we only ship to physical residential or business addresses.

• Based in Melbourne
Australian express orders are dispatched from here
Our warranty and repair centre is located in melbourne

• We ship Australia-wide express delivered in 5 to 8 business days
• We currently ship globally to United States, United Kingdom, Canada and most parts of Europe

• Email us at sunny@ampx.com.au

Refund Policy
https://www.ampx.com.au/policies/refund-policy

Shipping Policy
https://www.ampx.com.au/policies/shipping-policy

Terms of Service
https://www.ampx.com.au/policies/terms-of-service

• Email us for tracking updates we respond 24/7
• Avoid using Shop APP to track parcels as it's been unreliable.

We use AusPost, AlliedExpress, Top Logistics, 17track and others.

• The motor kit and battery ship separately due to packaging and carrier requirements

• We offer all connector type options including XT60, XT90 and XT150
• If no preference is specified via email after purchase, the connector type will be shipped at random

• We currently ship worldwide to:
    • Australia
    • United States
    • Canada
    • United Kingdom
    • Europe: Austria, Belgium, Bulgaria, Croatia, France, Germany, Greece, Hungary, Italy, Netherlands, Poland, Portugal, Slovakia, Slovenia, Spain

Order will automatically be shipped from our manufacturing plant.

• 2-3 weeks delivery Australia-wide from date of purchase
• Tracking details active at 2-week mark

• It depends on your setup refer to your product page for speed and range estimates
• You need the correct setup to draw the full motor power follow our guidelines

Yes, constant frontal impact may damage the motor, controller, battery and wiring set up

Look out for any bikes with below criteria ⬇️ 

* Quick release (QR) 135mm or 150mm ✅ 
* Open-slotted dropouts ✅ 
* Thru-axle (TA) ❌ 
* Closed-vertical dropouts ❌

— Facebook marketplace great place to search

Giant Talon 4 pre-23 (M+)
Giant Fathom 17-18' (M+)
Norco Storm pre-23 (M+)
Giant ATX 3 all yrs (all sizes)
GT Aggressor pre-23 (M+)
Merida Big 9 pre-23 (M+)
Trek Marlin 5/7 gen 1-2 (M+)
Specialised Rockhopper pre-21 (M+)
Fluid Summit (M+)
Fluid Nitro (M+)

To name a few, plenty other options out there.

Giant Talon 4 pre-23 (L+)
Giant Fathom 17-18' (L+)
Norco Storm pre-23 (L+)
Giant ATX 3 all yrs (L+)
GT Aggressor pre-23 (L+)
Merida Big 9 pre-23 (L+)
Trek Marlin 5/7 gen 1-2 (L+)
Rockhopper pre-21 (L+)
Fluid Summit (L+)
Fluid Nitro (L+)

To name a few, plenty other options out there.

• Yes both are sold separately and required for a full setup

• No, you may install without it and use your default hydraulic disc brakes

• Our kits fit hardtail mountain bikes, hybrid bikes, and city or road bikes
• Your frame must have 135mm rear open-slotted dropouts (new models such as Trek Marlin 7 Gen 3 have closed dropouts as opposed to Trek Marlin 7 Gen 2 having open dropouts)
• Alloy or steel frames are recommended
• Carbon frames are not recommended due to cracking risk

• 250W to 3000W motors support 135mm dropouts (150mm option available email us after purchase)
• 5000W motors support 150mm dropouts (170mm option available email us after purchase)
• Kits are water resistant not waterproof

• The MTX motor hub is designed for threaded freewheels not modern spline-style cassettes
• If your bike uses a spline-style cassette (common on newer bikes) you’ll need to replace it with a threaded freewheel which is a very cheap and easy fix

Yes, you may choose to build any of the options depends on your preference.

1. Build with no gears or chains (purely throttle power)
2. Build with gears + chains (pedal + throttle)
3. Build with single speed chain (pedal + throttle
4. Build with no throttle either pedal assist system only (PAS)

For 3000w & 5000w builds most clientele remove chains and gears set up with only throttle.

• Yes, the kit is plug and play with basic tools
• Having a second person to help makes the process much easier
• If unsure, we recommend getting help from a local bike technician

• Allen key set
• Adjustable wrench or spanner
• Phillips head screwdriver
• Cable ties (provided)
• Torque arm wrench or socket
• Chain whip & cassette tool (if reusing your old cassette)
• Electrical tape or heat shrink (optional)
• Tire levers & floor pump

• Beginner: 1 to 3 hours — you may need to follow video guides
• Experienced: Around 30 minutes with basic bike tool knowledge
We provide full instructions and after-purchase support until build is complete A to Z

• Full twist throttle is included by default
Email us after purchase if you prefer half twist or thumb throttle instead

Purchase brake disc spacers, generally 3mm is best for 3000w.

Amazon Link:
https://amzn.asia/d/fBWtdoC

Cassette vs. Freewheel (Flywheel)
• There are two common rear gear types: cassettes and freewheels (flywheels).
Our MTX motor only supports threaded freewheels, not cassettes.

🔧 The Difference:
• Freewheel (threaded): Screws onto the motor hub
• Cassette (splined): Slides onto a freehub (Not supported)

If your bike has 8-speed cassette, buy an 8-speed threaded freewheel and change to 8-speed derailleur accordingly.

• Check dimensions carefully to ensure your bike frame has enough clearance.
(All measurements Side × Top × Bottom)

Triangle Batteries:

48V 20Ah (Hardcase)
25cm × 39cm × 32cm

52V 20Ah (Hardcase)
25cm × 39cm × 32cm

52V 30Ah (Soft Case)
28cm × 43.5cm × 46.5cm

72V 20Ah (Hardcase)
24cm × 36.5cm × 41cm

72V 30Ah (Soft Case)
26cm × 40cm × 45cm

• Yes your frame must have space inside the main triangle
Tip: Measure your available space and compare it to battery dimensions listed

• Refer to motor and battery listing to view compatible and suggested battery options

• Up to 5 years with proper care
• Rated for 1200+ charge cycles

• Only use the charger we provide. Using other chargers may void your warranty
• Don’t fully drain the battery. Recharge when it drops to around 10–20%
• Unplug the charger once it’s full (red light turns green)
• Store in a cool, dry place. Avoid extreme heat or freezing
• If storing long-term, keep the battery at about 50% charge
• Never wash or soak the battery
• Let the battery cool down after riding before you charge it
• Check and clean the connector ports regularly

• Use a voltmeter or track a noticeable drop in riding range
• A full guide will be provided soon

• Triangle batteries in 48V, 52V, and 72V
• Downtube batteries in 36V, 48V and 52V
All batteries includes a charger

• Couriers usually leave a delivery slip or send an email or text
• Your parcel may be taken to your local post office or scheduled for redelivery

• Afterpay and Zip Pay are coming in 2026
• Wholesale pricing is available email your order request and we'll quote you within 24 hrs

• Yes located in Melbourne we'll conduct all warranty repairs and replacements through here

• Sure contact us immediately if your order hasn’t shipped yet

• Yes all parcels are covered for loss or damage

• Refunds: We do not offer refunds please choose carefully

Warranty:
– Motor: 2 years
– Battery: 18 months
– Controller & charger: 1 year
~Installation damage is not covered but spare parts are available on request

• Take clear photos or videos and contact us we’ll investigate and send a replacement