The team at Thunderbike has once again unleashed their creativity on a Harley-Davidson Softail Fat Boy, delivering a build that is nothing short of a royal masterpiece.
The customer wanted something truly special, and Thunderbike delivered — dressing this beast in a bold and majestic Royal Purple finish.





Purple, long associated with royalty and nobility, is no coincidence here. This bike made its debut at the Custombike Show in Bad Salzuflen and instantly captivated everyone in the room. Now, it’s forever immortalized under the name Royal Purple.



The true highlight of this build lies in its wheels, crafted using a newly developed manufacturing technique. They resemble Thunderbike’s 25th Anniversary design — monoblock wheels milled from solid aluminum — but with a twist. These aren’t just classic two-tone finishes; their surfaces shimmer in a full spectrum of colors, especially impressive on the 9-inch wide, 21-inch rear wheel.



This build is a testament to what happens when engineering and artistry collide. Here’s a glimpse at some of the premium parts and upgrades included:
- Thunderbike Single-Side Swingarm Kit 21′′ Alu
- Thunderbike Pulley Anniversary Single Side
- Thunderbike Brake Disc Streetmaster
- Thunderbike Brake Caliper Adapter 300->340mm, left black
- Thunderbike Seat Plate
- Thunderbike Reflector Inside Plate
- Thunderbike Custom Alu Tank (15 ltr., stretched)
- Thunderbike Hydraulic clutch Conversion Kit chrome
- Thunderbike Grips Base Satin black cut
- Thunderbike Ignition Coil Relocation Kit black
- Thunderbike EFI Cover black wrinkle
- Thunderbike Tele Fork Lowering Kit
- Harley-Davidson Cover Battery Right, Gloss Black
- Harley-Davidson Empire Rider Footboard Kit chrome
- Harley-Davidson Empire Large Rear Brake Pedal Pad chrome
- Harley-Davidson Empire Passenger Footpegs chrome
- Harley-Davidson Empire Shifter Peg chrome
- Harley-Davidson Hand Control Lever Kit chrome
- Harley-Davidson Clutch Bracket and Master Cylinder Reservior Kit chrome
- Harley-Davidson Clutch Bracket and Master Cylinder Reservoir Kit chrome
- Harley-Davidson Switch Housing Kit, chrome
- Harley-Davidson Switch Cap Kit chrome
- Thunderbike Chin Fairing GP Style Long
- Harley-Davidson Willie G Skull Derby Cover
- Harley-Davidson Timer Cover Willie G. Skull
- Arlen Ness Big Sucker Oval Upgrade Air Filter Element
- Thunderbike Front Fender 23′′ Fiberglass
- Harley-Davidson Lower Fork Sliders chrome
- Harley-Davidson Switch Housing Kit, chrome
- Thunderbike 25th Anniversary wheel
- Thunderbike Rear Fender Steel 260 mm
- Thunderbike License Plate Frame Inside Plate
- Thunderbike License Plate Lighting
- Thunderbike Handlebar Hollywood Light
- Thunderbike Flat Riser Kit 2′′
- Thunderbike Toppers Base
- Thunderbike Front Axle Cover-Set
- Thunderbike Turn Signals Stripe LED with Housing