Berria builds the Mistral Essential Apex around DJI’s Avinox M2 drive, the system family behind a new wave of electric mountain bikes, and sells it in road and gravel versions at €3,499 each. The motor numbers lead the story here.
Both versions share one hydroformed aluminum frame, one full carbon fork and one SRAM Apex XPLR build. A single choice separates them, and it sits at the contact patch, where a 40 mm gravel tire or a 32 mm road tire decides what the bike does best.
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Canyon Grail:ON CF 7 AXS
Carbon gravel frame · Mid-drive electric assist · 12-speed drivetrain
Price: $3,318.68
Where to buy: Buy on Amazon
Berria Mistral Essential Apex
Gravel or Road version · Avinox M2 drive · 600 Wh battery
Price: €3,499
Where to buy: Buy at Berria
The Avinox M2 brings mountain bike torque to drop bars
The Avinox M2 is rated at 125 Nm of torque in Boost mode and 1,100 W of peak power, figures that belong to full-strength electric mountain bike drives rather than the lightweight systems usually tucked inside e-road frames. We covered this drive family in our Amflow TL Carbon first look, where the same Avinox hardware hauls a trail bike up climbs that would end a road ride early. Torque decides steep days. It governs how hard the motor twists the cranks at the low cadences where ramps and loose gravel slow a rider down, and 125 Nm is a great deal of twist when you’re pinned on a ramp.
A 600 Wh battery lives inside the down tube
The battery is an Avinox 600 Wh pack fixed inside the down tube, and that capacity is the generous half of the trade, feeding a full-power motor through full-length rides instead of rationing assistance on longer routes. The other half is weight. Berria leaves the weight of both versions off its spec sheet entirely, and that omission tells you this isn’t a bike you shoulder up three flights of stairs each night. A 600 Wh pack and a full-power motor add real mass regardless of how slim the frame looks in the photos, so riders who carry a bike daily should weigh the silence carefully.
Berria publishes no range figure for either version, a welcome restraint in a category addicted to optimistic laboratory numbers. The DPC100 display shows a live range estimate as you ride, next to cadence and your own power output, and that’s the number worth trusting.
One frame splits into gravel and road versions
Both versions ride on the same Mistral HPR 2G frame in hydroformed 6061 aluminum, with full internal cable routing, flat-mount brake calipers and clearance for tires up to 700x50c. Internal routing keeps the lines clean and the frame washable after muddy rides, and the 50c ceiling leaves room to grow the tires later.
The gravel version rolls on Vittoria Terreno T30 tires in 40-622, while the road version switches to Vittoria Rubino IV tires in 32-622 with the Graphene 2.0 compound, and both sit on Vision Team 30 alloy wheels. Five sizes run from 48 to 60. Every size wears the same BLACK-Collection finish, so the checkout choice really is just the tire question.
SRAM Apex XPLR and a carbon fork keep the build sensible
Shifting comes from a SRAM Apex XPLR D1 drivetrain with twelve speeds and a 10-44T cassette, braking comes from SRAM Apex hydraulic discs, and the Allroad EVO 3 fork is full carbon. That fork earns its keep on broken pavement, where carbon takes the buzz out of your hands across a long day, while the single chainring and wide cassette keep shifting simple on climbs.
The cockpit pairs an Avanforce alloy gravel bar with a carbon seatpost and a Selle Royal ORMA saddle. Up front, the Avinox DPC100 display packs a 2-inch color screen with Bluetooth and a USB-C port, so the bike can top up a phone while it reports your ride. The system also carries Bluetooth and Apple Find My, so a parked Mistral can be tracked from a phone like a misplaced set of keys. Nothing here is exotic.
| Frame | Mistral HPR 2G, 6061 aluminum |
| Fork | Allroad EVO 3, full carbon |
| Motor | DJI Avinox M2, 125 Nm in Boost mode |
| Peak power | 1,100 W |
| Battery | Avinox 600 Wh, fixed in the down tube |
| Display | Avinox DPC100 Flat, 2-inch color |
| Drivetrain | SRAM Apex XPLR D1, 12-speed |
| Cassette | 10-44T |
| Brakes | SRAM Apex hydraulic disc |
| Wheels | Vision Team 30 alloy, tubeless ready |
| Tires, gravel | Vittoria Terreno T30, 40-622 |
| Tires, road | Vittoria Rubino IV, 32-622 |
| Sizes | 48, 51, 54, 57, 60 |
| Color | BLACK-Collection |
| Price | €3,499 |
The American catch is the plug, not the bike
Berria sells the Mistral through its European storefront in euros, and the charger in the box is a 230V unit fitted with an EU plug, so an American buyer is importing this bike rather than ordering it locally. None of that makes the bike worse. It does mean warranty trips, charger adapters and delivery timelines belong in the buying decision from the start, not in a forum post once the box lands.
Riders who want a comparable drop-bar e-gravel bike from a domestic storefront today can look at the Canyon Grail:ON CF 7 AXS, which Amazon carries at $3,318.68 with a carbon frame and mid-drive assist. It trades the Avinox punch for a domestic checkout and US support channels.
Buy the Mistral Essential Apex at €3,499 if you want full-power assistance in a drop-bar bike and can handle a European import, and skip it for the Grail:ON at $3,318.68 if a US plug counts for more.
