eBIG.NINE 400

In mountain-bike land, this is a pedaling-speed measure - how fast it rolls when you're working for it. Compared with more speed-first builds, this build is shaped by a heavier build, relatively narrow MTB tires that roll quickly, and a more budget-friendly drivetrain that focuses on value. On hardpack, the tire setup is biased toward rolling speed on firm ground.

Climb score: 5.5/10. Within e-mountain bikes, this comes out around the middle. When it gets steep, the gearing feels very easy. In numbers, the low gear is roughly 18.0 gear inches. In its peer group, it lands around the easier ~70% for low-gear climbing. “Gear inches” sounds nerdy, but it’s just a quick way to describe how easy your lowest gear is to turn uphill. Lower usually means easier. At about 24.2 kg, it’s a heavy build; the low gear matters even more when the slope kicks up. Being an e-bike helps on climbs because the assist adds steady push when you need it. It’s set up so climbs feel controlled rather than a grind. Specs can vary by size and build, and some manufacturer details aren’t always published, so treat this as a strong guide rather than a guarantee.

On the suspension scale, it comes in at 5/10 — “Confident trail control”. It’s built for clear bump absorption and more reliable wheel control on mixed surfaces. Front suspension handles most impacts, while the rear wheel tracks the ground directly. It should keep the bike more controlled on mixed surfaces, especially through repeated small-to-medium impacts.

Balanced fit - a versatile position for long rides and faster efforts. Because you get a very small drop: roughly 25 mm from saddle to bar, plus about 605 mm of stretch forward (very long). Estimated lean is about 25 degrees.

In E-bikeMountain, This bike's adjustability comes down to cockpit, routing, and seat setup: This front-end is not locked into a one-piece system, which helps adjustability, Cable routing is on the simpler side, which helps adjustability, and The listed seatpost details do not show clear restrictions or extra flexibility signals. That is why it is in the Adjustable bucket. Put simply, it describes how practical it is to reconfigure your position later.

Ride comfort is 6.4/10 — on a real ride it feels easygoing over rough patches. That’s why it’s labeled Balanced. The posture is neutral (posture 5/10), which keeps it balanced — not overly aggressive, not overly relaxed.

This bike is best for smoother trails where speed and efficiency matter. It has about 100 mm of suspension travel (how much it absorbs bumps), which suits smoother trails. The Hardtail setup supports this riding style.