Eunorau Flash Electric Bike: Ultra-Long-Range Power for Real-World Adventures

The Eunorau Flash Electric Bike is not just another e-bike; it’s a dedicated long-range machine designed for riders who want to transform every journey into a confident, controlled, and exhilarating ride. With a triple-battery configuration and a choice of high-torque drive systems, the Flash powers you farther, smoother, and with more stability than most bikes in its class.

Why triple batteries matter: range that redefines what's possible

Long-range riding finally becomes practical with three battery options. The standard 52V16Ah battery is already capable, but you can expand to a top-tube 52V21Ah and a down-tube 52V17Ah. When all three are connected, the Flash is engineered to deliver up to 220 miles (354 km) of range on pedal assist level 1, turning epic journeys into sustainable, confident rides. This isn’t about bragging rights—it’s about reliable, predictable range so you can plan ambitious routes without constant charging stops.

Power, control, and stability: three drive configurations to match your ride

• Mid-drive configuration: 52V1000W with 220 N.m of torque provides precise control and powerful hill climbing while preserving a stable center of gravity for better balance on tricky terrain.
• All-wheel-drive setup: 52V1500W (dual 750W motors) with 184 N.m torque for exceptional traction on slick, loose, or steep surfaces—ideal for mixed-terrain adventures.
• Rear-drive option: 52V750W rear motor with 92 N.m torque for a nimble, responsive feel when you’re cruising city streets or carving narrow lanes.

Each system works with a high-sensitivity torque sensor and a speed sensor for seamless, natural-feeling acceleration and pedal assist that responds exactly to your input. The centralized drive placement preserves the bike’s balance, making spirited rides feel reassuringly predictable.

Ride comfort that keeps you going longer

The Flash pairs rugged capability with comfort-enhancing components engineered for endurance. The EXSHO STRONG-DH front suspension fork delivers 80 mm of travel with adjustable compression and lockout, effectively absorbing ruts, potholes, and rough surfaces. When you switch to the mid-drive or AWD configurations, the bike’s suspension work in concert with the motor system to minimize fatigue on long tours. A robust 290 mm rear spring on the mid-drive layout further smooths out bumps, helping you ride faster with less effort.

Built to handle real-life riders and loads

Designed around a strong aluminum alloy 6061 frame, the Flash supports a total payload of up to 440 lbs. Its adjustable rider height range from 5'2" to 6'4" means a wide audience can comfortably reach the pedals while benefiting from the bike’s low-center-of-gravity stability. The combination of a sturdy 20" x 4.0" CST tire setup and hydraulic disc brakes ensures reliable stopping power in diverse conditions, from wet pavement to gravel paths.

Key specifications at a glance

• Battery options: 52V16Ah standard (plus 52V21Ah top tube and 52V17Ah down tube)
• Range: up to 220 miles with all three batteries (pedal assist level 1)
• Motor options: Mid-drive 52V1000W; AWD dual 750W; Rear-drive 750W
• Torque: 220 N.m (mid-drive), 184 N.m (AWD), 92 N.m (rear)
• Display: BC281 LCD
• Charger: 4.0 A smart charger
• Frame: Aluminum alloy 6061
• Suspension: Front EXSHO STRONG-DH 80 mm; rear 290 mm double spring (mid-drive)
• Wheels and tires: 20" x 4.0" CST tires
• Weight: 82–92 lbs
• Payload: 440 lbs
• Rider height: 5'2"–6'4"

Who should consider the Eunorau Flash

If you’re a long-distance commuter, a weekend tourer, or someone who simply hates the rigmarole of frequent recharging, the Flash is built for you. It’s equally at home cruising country roads, tackling mountain descents, or navigating urban commutes with heavy gear. The triple-battery architecture makes it a standout option for riders who value extended range, dependable performance, and the flexibility to tailor the setup to their needs.

Practical tips for getting the most from your Flash

• Plan routes with your battery capacity in mind: begin with the full triple-battery setup for the longest legs, and reserve the mid-pack configuration for mid-range trips.
• Take advantage of the three driving modes to optimize efficiency on mixed terrain—use the pedal-assist levels to ride with natural cadence and conserve energy.
• Regular maintenance matters: inspect hydraulic brakes, check tire pressure for better range, and keep the BC281 display firmware up to date for accurate range estimates.
• Use the lockout feature on the front fork when riding on smooth pavement to minimize fork movement and conserve energy.

Warranty and peace of mind

Eunorau backs the Flash with a robust warranty program designed for riders who push their bikes in real-world conditions. The details include a 24-month limited warranty, with coverage specifics outlined in Eunorau’s policy, so you can ride with confidence across U.S. and Canadian markets.