Merida eBig.Nine 400
Pedal-assist, rated to 250W, assist cuts at 25 km/h. Declared by the brand; declaration not independently sighted.
Merida eBig.Nine 400 (2026) at a glance
The Merida eBig.Nine 400 is a trail emtb e-bike sold in Australia at $3,549 (price checked 9 Oct 2026). It pairs a Shimano STePS EP6 mid drive motor with 85Nm of torque, a 630Wh battery rated for up to 73km, 29 inch wheels. It is listed as a 250W pedal-assist e-bike limited to 25 km/h for Australian roads.
Is it for you?
We have not ridden this bike. This read is based on the spec sheet and Australian seller information, not a test ride.
Best suited to
Fire road and light singletrack riders who want a hardtail eMTB without full suspension weight or cost.
Standout strength
85Nm and 630Wh out of a hardtail is serious range and climbing power for the money.
The main compromise
No rear suspension, so rough descents will punish you more than the eOne-Forty or eOne-Sixty will.
Full specification
Drive and power
Frame and ride
Australian compliance
Pedal-assist, rated to 250W, assist cuts at 25 km/h. Declared by the brand; declaration not independently sighted.
eBig.Nine 400 vs eBig.Nine 400 EQ
| Merida eBig.Nine 400 | Merida eBig.Nine 400 EQ | |
|---|---|---|
| Model year | 2026 | 2026 |
| Price | $3,549 | $3,419 |
| Motor | Shimano STePS EP6, mid drive | Shimano, mid drive |
| Torque | 85 Nm | TBC |
| Battery | 630 Wh | 630 Wh |
| Claimed range | 73 km | TBC |
| Weight | TBC | TBC |
| Frame | Alloy hardtail | Alloy hardtail, equipped |
| Wheels | 29 inch | 29 inch |
| Category | Trail eMTB | Trail eMTB |
| Availability | In stock | In stock |
Choose the eBig.Nine 400 if
you want this spec at this price; on paper the two are very close, so ride both if you can.
Choose the eBig.Nine 400 EQ if
it costs $130 less.
Merida
Compare similar e-bikes
Common questions
How much does the Merida eBig.Nine 400 cost in Australia?
The Merida eBig.Nine 400 is listed at $3,549 (99 Bikes sale price against a stated full price of $5,499 (Metallic Black and Gunmetal Grey, checked 9 Oct 2026).). eBikeFinder checks pricing against manufacturer and distributor information, and prices can change with sales and stock. This price was last checked on 9 Oct 2026.
Is the Merida eBig.Nine 400 road legal in Australia?
Yes. The Merida eBig.Nine 400 is a 250W pedal-assist e-bike that stops assisting at 25 km/h, which meets the road-legal e-bike standard in every Australian state. Compliance is asserted by the brand rather than independently verified, so confirm the current spec with the seller.
What is the range of the Merida eBig.Nine 400?
The Merida eBig.Nine 400 has a claimed range of about 73 km from its 630Wh battery. Real-world range is usually lower than the claim, since it depends on assist level, rider weight, terrain and wind.
What motor does the Merida eBig.Nine 400 have?
The Merida eBig.Nine 400 uses a Shimano STePS EP6 motor, in a mid-drive position, producing 85Nm of torque. Mid-drive motors climb hills better because they work through the bike's gears.