“Walt Siegl builds the ultimate Ducati superbike.”

Bike Exif

“This bike is like nothing else that you’ll ever have a chance to ride. Hard to believe that a bike built from scratch out of a shop in New Hampshire can rival the big manufacturers who have access to many engineers and historical data from their storied racing heritage.

The experience of this build will be with me forever, but the real pleasure is when you throw a leg over it.
Whether at the track or just riding it around the city, this motorcycle demands respect. It does everything you ask it to do and gives the gift of pure joy.

My first track event with her was in Florida where three days were spent consistently being amazed at not only the quality of the finish and fit but the performance and reliability. After the initial day was spent on DOTs, we graduated to slicks and my only problem was my face hurt from smiling too much.”

Nicholas Harrison, SBK owner

The WSM Superbike is your ultimate street and racetrack weapon. It is built to order, to your specs and preferences, available in two engine configurations.

“My goal was to design a truly special machine that encapsulates traditional European motorcycle design and its racing heritage and all the emotions that come with that. Riding the bike tops it all off: It behaves so differently than your showroom bike. It is so agile and easy to steer, without feeling flighty, and at the same time quite comfortable. That really caught me by surprise on my first test ride. All the painstaking considerations of ergonomics paid off. And all the weight saving efforts are really paying off, not only with the way the bike steers and feels under you, but also how well the brakes and suspension translate, and how effortless the acceleration is. The experience is truly visceral.”

– Walt Siegl


BodyworkWSM carbon fiber, carbon fiber airbox and intake tubes, WSM aluminum fairing
Foot ControlsWSM 70-series aluminum rear sets
Hand ControlsMagura or Brembo master cylinders
FrameWSM aircraft spec chrome/moly tubing, structural carbon fiber subframe/tail, World
Superbike-spec geometries
SuspensionOhlins FGR World Superbike forks, WSM-spec Ohlins TTX shock, 1098 rear
WheelsForged aluminum OZ Racing, Dunlop DOT tires
BrakesBrembo Monobloc calipers, Brembo 330mm front rotors
EngineBruce Meyers Performance 1100cc air-cooled two-valve Ducati engine
ExhaustWSM stainless header system, titanium mufflers
ElectronicsWSM/Race Spec harness, clutchless quickshift, Ducati ECU with WSM


The WSM Superbike is built to order, to your ergonomic specifications and choice of color and graphics.

Upgrades available: For maximum horsepower, Bruce Meyers Performance liquid-cooled four-valve 1098 or 1198 Ducati engine

Please feel free to get in touch with any questions, or to discuss a build with Walt.