Introducing the radical edition of Bündnerbike’s latest custom masterpiece — the “Bronx Brute.”
A bike reimagined from the ground up, reengineered with precision, and shaped with bold character in every curve.
Based on the Harley-Davidson Breakout, the original frame has been stretched, lowered, and widened to a whole new level through meticulous custom racking. What remains untouched is the powerful heartbeat of the 117ci Milwaukee-Eight V-Twin engine — everything else has been completely transformed.
The “Bronx Brute” stuns with its deep black and bronze chrome effect finish, paired with one-off custom wheels, a fully redesigned front fork, and hand-shaped bodywork. It’s a street-ready cruiser that carries the soul of a showbike — aggressive, legal in Switzerland, and unapologetically one of a kind.
Designed in the mountains, made for the city — the Bronx Brute brings raw power, refined craftsmanship, and unmistakable presence to the streets.
Technical Specifications
Radical Elegance – Handcrafted with Precision
Stretched Frame
Painstakingly extended and lowered at the rear to achieve a longer, deeper, and more aggressive silhouette.
Completely Custom Bodywork
Every body panel is a one-off creation. No stock parts remain – each component is tailor-made.
Custom Fuel Tank with Side Mesh Inserts
A handcrafted tank featuring integrated mesh elements on the sides, adding visual depth and technical sophistication.
3D Rear Fender with Integrated Seat
A uniquely sculpted 3D fender that seamlessly incorporates the saddle – merging comfort and aesthetics at the highest level.
Integrated LED Turn Signals and Taillight
Elegantly embedded in the rear section – nearly invisible, fully functional, and 100% road-legal in Switzerland.
3D Accents on the Rear Section
High-quality 3D applications refine the transition from fender to frame – crafted with precise attention to detail.
Custom 3D Electronics Housing
All electronic components are neatly housed in a clean, functional, and visually refined 3D box – designed for performance and style.
Performance & Precision Engineering
Chassis
- Rebuffini Upside-Down Forks – Delivering maximum stability and razor-sharp steering.
- Rebuffini Triple Trees – Engineered to fit Rebuffini 4-piston brake calipers.
- Custom Swingarm – With dedicated mounts for pulley and rear brake system.
- Adjustable Bündnerbike Air Suspension – Rear suspension adjustable in height and stiffness.
- Streamlined Belt Cover – Cleanly mounted to the swingarm for a sleek finish.
Braking System
- Front: Rebuffini 4-piston calipers with 320 mm Galfer stainless steel brake discs
- Rear: Brembo 4-piston caliper with 300 mm Galfer stainless steel disc
Wheels & Tires
- Custom Bündnerbike Wheels
- Front: 18 x 3.5 inches with Metzeler 140/70 x 18 B
- Rear: 18 x 10.5 inches with Metzeler 300/35 VR 18
Controls & Accessories
- Drag Bar Handlebar with integrated Rebuffini speedometer mount
- Bündnerbike Grips and Rebuffini Radial Controls for clutch and brakes
- Custom Foot Controls for gear shifting and rear brake
- Bündnerbike Performance Air Filter
- Bündnerbike License Plate Holder
Seat
- Bündnerbike Leather Saddle featuring premium diamond stitching – a unique blend of form and comfort
Sound – Legal and Emotional
- KessTech 2-in-1 Exhaust System with electronic valve control
- Deep, powerful sound at the push of a button – fully certified for road use in Switzerland.
- A commanding presence in sound, while remaining completely legal for everyday riding.
Painted? No – Staged.
What glimmers isn’t just paint – it’s a symphony of metal and light.
To achieve the dramatic chrome effect, the entire motorcycle was meticulously silver-plated by hand, layer by layer.
The Result: A rich, shimmering bronze-black tone that shifts from smoky dark to molten metal depending on the light.
Technically complex. Visually unforgettable.
This finish isn’t just a color – it’s a statement.
Crafted with Precision. Approved with Pride.
This isn’t just another custom motorcycle – it’s the outcome of vision, passion, and expert craftsmanship.
Concept and Build: Bündnerbike Manufaktur, in close collaboration with Carrosserie Ludwig – two Swiss names synonymous with quality and radical individuality.
Based on the latest Harley-Davidson Breakout, every inch of the Bronx Brute has been reimagined and elevated into a new dimension. Every detail is intentional. Every line, a testament to true custom building.
And best of all:
This bike is 100% street legal in Switzerland.
No compromises. No shortcuts. Pure uniqueness, built to ride.
