▷ Harley-Davidson Breakout FXBR 'Trooper' by Thunderbike

The “Trooper” is built on a Harley-Davidson Breakout and demonstrates just how far the production model can be elevated using high-end custom components.

Its engine, frame, and general layout provide a strong foundation, which has been enhanced with a consistently sporty configuration inspired by the Grand Prix series—topped off with a custom Iron Maiden–themed paint job that gives the bike its name. One of the key highlights is the introduction of the brand-new Pro Performance swingarm, developed specifically for wide Softail frames.

The Trooper retains the powerful cruiser DNA of the Breakout but receives a substantial upgrade in both style and technical capability.

Pro Performance Swingarm

From a technical standpoint, the Trooper sets new benchmarks. For the first time, the Breakout is equipped with the Pro Performance swingarm, a striking and highly engineered structure milled from solid aluminum. This advanced component replaces the original tubular swingarm, bringing a completely new visual and structural identity to the rear end.

The development focused on three primary goals:

Maximum torsional rigidity
Sport-oriented lines
Minimal weight

Designed specifically for wide Softail frames, the solid swingarm arms are hollow-milled and reinforced with an additional cover—mirroring the construction philosophy of modern superbikes.

Its complex geometry is made possible only through state-of-the-art CNC machining, reflecting the high standards required for premium chassis components. As with all safety-relevant parts in the lineup, the Pro Performance swingarm comes with a TÜV certificate, making it a fully legal high-performance upgrade for riders who prioritize function, design, and quality.

Tank, Rear Section & Ergonomics

The bike features an in-house–designed GP aluminum tank, integrating essential components such as the fuel pump and sensors. Beyond its technical functionality, the tank enhances the bike’s silhouette with a shorter, more compact profile, sharp edges, and a dynamic transition into the seating position.

The rear fender and matching seat follow the same Grand Prix design philosophy. The compact fender incorporates discreet LED tail and brake lights, creating a clean and open rear view that highlights the wheel, swingarm, and drive system.

Up front, the GP-style triple clamp with increased rake works in combination with clip-on handlebars mounted directly to the fork stanchions. This setup results in a lower, more active riding posture and significantly improved front-end feedback.

Wheels, Brakes & Chassis

The Trooper rolls on wheels from the Vegas Cut series, known for their straight spokes and distinctive bolt detailing. The sizes remain true to the Breakout category—21″ front and 18″ rear—but both aesthetics and performance are completely redefined.

At the rear, an integrated pulley brake with an inward-mounted disc reveals an unobstructed view of the wheel.
At the front, an enlarged 340 mm Vegas Wave brake disc paired with radially mounted calipers delivers stronger braking performance and reinforces the bike’s sport-oriented concept.

Dark Styling

Powder-coated engine components and black DLC-coated fork stanchions contribute to the Trooper’s dark, technical appearance. DLC is among the highest-grade surface treatments available for fork tubes, offering superior durability, low friction, and premium aesthetics.

Fine Details From In-House Production

A wide range of proprietary components completes the transformation:

Headlamp cap
Side-mounted license plate holder
GP front fender
GP front spoiler
GP rear fender with integrated turn signals
Various precision-machined accessories

Each piece is designed to blend seamlessly into the overall concept, emphasizing clean lines and a technical look without appearing as standalone showpieces. The Trooper is not a random collection of custom parts—it is a cohesive, high-performance custom build.

Iron Maiden Paintwork

The paint scheme is a direct tribute to Iron Maiden’s “The Trooper”, created in collaboration with Chiko’s Pinstriping. The multi-layered design merges iconic Iron Maiden imagery with the Grand Prix visual language. The customer’s vision—to express the spirit of Iron Maiden—was perfectly realized in a unique and expressive finish.