This build comes from the engineering master mind Walt Siegl, one of the top bike builders in the world today, hailing from Harrisville, New Hampshire. Walt was born and raised in Austria and he was attracted to design and motorcycles from an early age. He worked as a toolmaker and welder throughout Europe and Russia before immigrating to New York City in 1985 where mainly as a hobby, he worked on motorcycles, for many years, before relocating to New Hampshire to focus exclusively on building custom motorcycles. Walt Siegl Motorcycles is located on the ground floor of an 1860’s textile mill.

This build was the prototype for a small-scale production run and almost everything about the original Ducati Sport Classic has been replaced, rebuilt or re-designed. There are no computers and no CNC machines in his shop. It’s an organic process where custom parts are made by hand and for this Sport Classic, Walt started with an in-house built, TIG welded and heat stress relieved, trellis frame made from 0.65 chro-moly, with a rake angle increased by half a degree from 24.0° to 24.5°. At the front, the brakes have been upgraded to 4-pot Brembo calipers, and he went with fully adjustable Showa forks on Ducati triple clamps, WS risers and bars.

The fuel tank and seat are hand-made by Walt, as are the exhaust manifolds. At the rear he went with a stock 900SS swing arm and shock body fitted with a Ohlins spring. The engine is from a 1994 900SS, which has been bored up to 944cc with a big bore kit. Due to the higher displacement Walt chose to go with 39mm flat slide Mikuni carburators. The engine covers and cylinder heads have been polished to match the polished wheels and overall retro swag of the bike. The wiring harness that allowed Walt to relocate the electronics under the tail, was supplied by European Cycle Services. Instuments were provided by Motogadget, headlight from a Monster donor and rear light is a genuine 1970’s CEV.

List of Modifications:

1994 900SS engine

944cc big bore kit

Walt Siegl – trellis chro-moly frame

Ducati – triple clamps

Showa – forks

Walt Siegl – risers

Walt Siegle – handlebar

Mikuni – 39mm carburators

Walt Siegl – exhaust manifolds

Gianelli – mufflers

Walt Siegl – seat

Walt Seigl – gas tank

Kevin Rothe – seat cover

CEV – taillight

Ducati Monster – headlight

Nate Weiner – paint

European Cycle Services – wiring harness

Motogadget – instruments

Via: Walt Siegl, Heavy, Silodrome

Photos by Eric Ahlquist