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.

• Thunderbike Vegas Cut Wheel
• Thunderbike Vegas Cut Wheel
• Metzeler Cruisetec Rear Tire 260/40VR18 M/C TL 84V
• Thunderbike Brake Disc Floated Wave Vegas 340mm
• Thunderbike Brake Disc Floated Wave Vegas 292mm
• Thunderbike Brake Caliper Adapter Radial 300->340mm left black
• Brembo M4 Radial Brake Caliper front left 108mm black
• Thunderbike Pulley Vegas polished
• Thunderbike Pulley Brake Kit
• Thunderbike Hydraulic clutch Conversion Kit black
• Thunderbike Belt guard black
• Thunderbike Front Axle Cover-Set
• Thunderbike License Plate Frame Inside Plate
• Thunderbike License Plate Lighting
• Thunderbike Reflector Inside Plate
• Thunderbike Rear Fender GP-Style 260 mm
• Thunderbike Seat Plate
• Thunderbike Lowering Kit Shock Stage 2 (30mm)
• Thunderbike Custom Alu Fuel Tank GP-Style
• Thunderbike Tank Mount black
• Thunderbike Chin Fairing GP Style Long
• Thunderbike Timer Cover New Custom
• Thunderbike Airbox Kit Oval
• Thunderbike Airbox Cover Oval TB-S
• Thunderbike Forward Control Kit Phantom long matte black
• Thunderbike Mounting Kit Forward Controls
• Thunderbike Shiftpeg & Brakepeg Satin
• Thunderbike Rider Footpegs V-Tech Design
• Thunderbike Triple Tree Kit Grand Prix bicolor
• Thunderbike Clip-On Handlebars Grand Prix bicolor
• Harley-Davidson Conventional Fork Tubes DLC black
• Thunderbike Turn Signal Load Equalizer
• Thunderbike Turn Signals Stripe LED with Housing
• Thunderbike Ignition Coil Relocation Kit black
• Thunderbike Headlamp Cap black
• Motogadget Mirror mo.view Race left
• Motogadget Mirror mo.view Race right
• Thunderbike Swingarm Pro Performance 260mm raw
• Thunderbike Brake caliper adapter Pro Performance Radial rear black
• Brembo Radial Brake Caliper rear 100mm black
• Thunderbike Front Fender GP
• Thunderbike Grips SP-S satin black cut
• Thunderbike Side Mount Licence Plate Bracket Medium Pro Alu black

La entrada Harley-Davidson Breakout FXBR ‘Trooper’ by Thunderbike aparece primero en DARK KUSTOM.

Thunderbike never misses when it comes to blending performance and design, and the Softail Breakout 117 ‘GP-Suzuka‘ is a perfect example of that precision.

Inspired by the spirit of the racetrack, this build pushes the limits of custom craftsmanship while maintaining the raw soul of Harley-Davidson.

This machine rolls on Thunderbike Grand Prix wheels — a 9.0×21 rear and 4.0×23 front, wrapped in Metzeler Cruisetec 260/35VR21 and ME888F 130/60B23 tires for an aggressive stance and unmatched grip. The Single-Side Swingarm Kit (21″ Alu) exposes that massive rear wheel, emphasizing the performance-driven design.

Braking is handled by a Thunderbike Streetmaster disc paired with a Brembo Radial Monoblock M4 caliper set for precise stopping power. The Triple Tree Kit Grand Prix 2.0 Performance and Stummellenker Set “GP 2.0” give the front end its race-ready attitude.

A Custom Aluminum Fuel Tank (GP-Style) and Airbox Cover Oval Grand Prix add clean, aerodynamic lines, while details like Phantom E Grips, Forward Controls Phantom Contrast Cut, and Stripe LED Turn Signals bring modern performance to the forefront.

Finishing touches such as Motogadget mo.view Race mirrors, Derby & Timer Covers (Drilled), and Hydraulic Clutch Conversion Kit make this Thunderbike masterpiece not only stunning but perfectly tuned for the road.

Parts & Details

• Thunderbike Grand Prix rear wheel 9.0×21
• Thunderbike Grand Prix front wheel 4.0×23
• Metzeler Cruisetec Rear Tire 260/35VR21 83V
• Metzeler ME888F Front Tire 130/60B23 M/C TL 65H
• Thunderbike Brake Disc Streetmaster
• Thunderbike Pulley Grand Prix Single Side
• Thunderbike Stummellenker-Set ′′GP 2.0′′
• Thunderbike Single-Side Swingarm Kit 21′′ Alu
• Brembo Radial Monoblock M4 Caliper Set black
• Thunderbike Triple Tree Kit Grand Prix 2.0 Performance
• Thunderbike Windshield Kit GP
• Thunderbike Front Fender GP Style
• Thunderbike Hydraulic clutch Conversion Kit black
• Thunderbike Airbox Cover Oval Grand Prix
• Thunderbike Phantom E Grips
• Thunderbike Custom Alu Fuel Tank GP-Style
• Thunderbike Turn Signals Stripe LED with housing
• Thunderbike Forward Control Kit Phantom contrast cut
• Thunderbike Rider Footpeg Set SP-S black
• Thunderbike EFI Cover black wrinkle
• Motogadget Mirror mo.view Race left
• Motogadget Mirror mo.view Race right
• Thunderbike Toppers Base
• Thunderbike Derby Cover Drilled contrast cut
• Thunderbike Timer Cover Drilled
• Thunderbike Axle Cover Swingarm right
• Thunderbike Axle Cover Swingarm left

La entrada Harley-Davidson Softail Breakout ‘GP-Suzuka’ by Thunderbike aparece primero en DARK KUSTOM.

Custom parts

• Thunderbike Vegas Cut wheel
• Thunderbike Pulley Vegas polished
• Thunderbike Pulley brake system
• Thunderbike brake disc Floated Vegas 340mm
• Thunderbike brake disc Floated Vegas 292mm
• Thunderbike brake calliper adapter 300->340mm left black
• Thunderbike brake calliper adapter Radial 300/340mm left
• Brembo M4 Radial brake calliper front left 108mm black
• Thunderbike rear fender GP-Style 260 mm
• Thunderbike side license plate holder Medium Pro black
• Thunderbike license plate holder Inside Plate
• Thunderbike license plate lighting
• Thunderbike reflector Inside Plate
• Thunderbike custom aluminum tank GP-Style
• Thunderbike tank mount black
• Thunderbike front spoiler GP Style Long
• Thunderbike front fender steel 21”
• Thunderbike triple clamp Grand Prix bicolor
• Thunderbike clip-on handlebar set Grand Prix bicolor
• Thunderbike headlamp cap aluminum raw
• Thunderbike indicator stripe LED in Aluminum housing
• Thunderbike footrest pre-installation kit black
• Thunderbike assembly kit pre-installation kit
• Thunderbike driver footrest V-Tech Design
• Thunderbike shift peg & brake peg satin
• Thunderbike grips base satin black cut
• Motogadget mo.view race mirror left
• Motogadget mo.view race mirror right
• Thunderbike toppers base
• Thunderbike clutch cover TB-S contrast cut
• Thunderbike timing belt guard black
• Thunderbike ignition cover TB-S contrast cut
• Thunderbike axle cover set rear
• Thunderbike axle cover set front
• Thunderbike axle cover swing arm left
• Thunderbike EFI cover with pressure gauge holder black wrinkle

La entrada Harley-Davidson Softail Breakout ‘Razor 6.0’ customized by Thunderbike aparece primero en DARK KUSTOM.

The Smoothless rolls on the streets of Dubai today. It was created on the basis of our Radical Over Curved Kit complete with Freestyle swingarm and Radical fork. The necessary ground clearance when driving is provided by our Thunderbike Air Ride, which we also offer for Harley-Davidson & Metric.

The Flawless highneck was adapted exta to its owner in order to allow optimal handling despite the extreme appearance.

La entrada Radical fork Over Frame ‘Smoothless’ by Thunderbike aparece primero en DARK KUSTOM.

As Thunderbike evolved from a motorcycle shed, Frank has also grown over the past 35 years. From mopeds to Suzuki, and eventually to his second custom bike, he has been on this journey with us. Now, a new project is on the horizon: a Radical Over frame powered by a 110 Harley engine will serve as the foundation for his latest bike.

The biker from Neuss is fully committed to this project and willingly makes the 100-kilometer journey to Thunderbike to check out the latest progress on his bike. Back in 2004, our custom mechanic Rainer built Frank’s first Harley, a freestyle-based custom bike.

La entrada Radical Over Frame ‘Respect’ by customized Thunderbike aparece primero en DARK KUSTOM.