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.
