The Raging Dagger stands as a bespoke Harley Sportster adorned in an abundance of carbon fiber.


The project started with a collaboration between Harley's Taiwan branch and Winston Yeh. The client's vision was to blend the power of the American V-twin with a streetfighter aesthetic, a departure from the typical Harley style. Additionally, the bike needed to remain practical for everyday use. Yeh embraced the challenge, focusing on performance enhancements through upgraded components and significant weight reduction. Remarkably, the Raging Dagger is 40 kilograms lighter than the stock Forty-Eight.

Upon arriving at Rough Crafts, the bike was stripped down to its frame and engine. Stock suspension, brakes, and wheels were replaced to improve performance. Intricate modifications were made, including the installation of a Buell-style rear suspension with an Ohlins shock absorber and a Trac Dynamics swingarm. Yeh also designed a unique angular oil tank to complement the swingarm.

The front suspension was upgraded with Yamaha R1 forks, and carbon fiber wheels from BST were fitted, along with Pirelli tires and Beringer braking components. The bodywork, fabricated by MS Pro, features a monocoque design merging the fuel tank and tail into one unit, crafted from carbon fiber. Motogadget accessories adorn the cockpit, and an MS Pro titanium exhaust adds a touch of elegance.

The Raging Dagger's aesthetics are further enhanced with blue pinstripes and custom-built pushrod collars and fuel tank badges. Through meticulous craftsmanship and innovative design, Rough Crafts has transformed the Sportster Forty-Eight into a striking and high-performance custom motorcycle.