Stealth B-52R: The Overpowered Ebike That Laughs at Limits
Last Updated on May 7, 2025 by Kristina
Back in 2015, the original Stealth B-52 turned heads and raised eyebrows. It was loud, aggressive, and didn’t give a second thought to rules. At a time when ebikes were still gaining traction, the B-52 went full throttle—part mountain bike, part dirt bike, and entirely rebellious.
Fast forward to 2025. Ebikes are everywhere. Commuters love them. Delivery riders rely on them. They’re also pulling more people into active lifestyles. What once felt niche is now normal.
But Stealth? They never aimed for normal.
The new B-52R is here, and it’s even more ridiculous—in the best way. Think of it as the original’s turbocharged cousin. The hub motor now pushes out a whopping 8 kW (11 hp). Torque jumps from 120 Nm to 230 Nm (that’s 170 lb-ft, for those keeping score). It’s faster, more efficient, and way quieter. Around 40 dB, according to the company—that’s fridge-level quiet.
Just don’t expect fridge-level speed. Some owners report topping 100 km/h (62 mph). Let that sink in. On a bike. With pedals.
Yes, this beast still has pedals.
Founder John Karambalis admits it’s hard to keep the front wheel down. The power and torque are that extreme. Steering gets tricky. Fun tricky.
The B-52R still rocks a 6-speed electromechanical gear system. You can pedal when you feel like it—or just twist and fly. And just like the original, the frame is nearly indestructible. Lifetime warranty. Enough said.
Braking gets a big upgrade too. Out go the 203-mm e-MTB brakes. In come 250-mm motorcycle-grade rotors. Bigger wheels now—27.5-inch rims, dirtbike knobby in the back. Fewer flats, more grip. Suspension’s no joke either: 180 mm up front, 200 mm at the rear. Total enduro vibes.
Battery capacity climbs to 2.5 kWh. That gives you about 60 km (37 miles) per charge. Takes three hours to top up. At 70 kg (154 lb), it’s still lighter than a dirt bike. Low center of gravity helps keep it manageable. But yeah—it’s hefty for an ebike.
Street legal? Probably not. Not unless your streets are made of dreams. The massive hub motor and aggressive stance give it away. This isn’t a stealthy ride, despite the name.
But wow, is it a showstopper.
At $8,890, the B-52R isn’t cheap. It’s more than double the cost of a Sur-Ron. But it’s also in a class of its own. Wild power. Nearly silent. Rugged build. Pedals. Yes, it costs—but you’re paying for a different breed of machine.
Stealth keeps pushing boundaries. And in a world full of safe, sensible rides, it’s awesome to see one go absolutely feral.
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Kristina is not just an enthusiast but a true authority on electric bikes. Nestled in the coastal beauty of Virginia, Kristina has found the perfect backdrop for her passion for electric biking. As a dedicated wife and homeschooling mom, her life revolves around family, faith, and the thrill of adventure.
Originally hailing from Ohio, Kristina's journey with electric bikes began as a curiosity and quickly evolved into a deep expertise. Her blog is a testament to her love for electric biking, combining her fascination for eco-friendly transportation with her coastal lifestyle.
When she's not cruising the beach on her electric bike, you'll find Kristina indulging in her other loves: long walks along the shore, getting lost in a good book, and cherishing moments with her loved ones. With a heart as big as her love for animals, especially cats, Kristina brings a unique perspective to the electric bike world, grounded in her strong faith in God and her dedication to a sustainable lifestyle.
Through her blog, Kristina shares her extensive knowledge of electric bikes, offering valuable insights, tips, and recommendations to fellow enthusiasts. Whether you're a seasoned rider or a newcomer to the electric bike scene, Kristina's blog is your go-to source for all things electric biking, fueled by her passion, expertise, and the scenic beauty of coastal Virginia.
