Velocette Café
Velocette Café This bike is a 500cc Velocette Venom with custom seat , tail section and reverse cone muffler.  Kosman did an enormous amount of work on this classic.  Sandy sourced the Ceriani GP...
Steffano Motors CAFE9
The Cafe9 was our idea of a modern café bike based on a Ducati Superbike platform. The bike features a bubble café fairing and a unique side exit exhaust resonator.  Front end is Ohlins,...
1962 Wards Riverside 175 Survivor
1962 Wards Riverside 175 (Survivor) We love this bike!  175cc two stroke made by Benelli in Italy for Montgomery Wards Company and currently used for the California Giro race event organized by San Francisco...
Acme Rocket Bike 969
Acme Rocket Bike designed Ducati 999  Roadster concept bike.  Kosman assisted with subframe modifications for battery and electronics mounting and many other machined parts required.  Exhaust header built by Kosman. Bodywork by Evan Wilcox. ...
BMW Airhead MonoCafe
1975 R90s frame with Kosman subframe.  R100S engine. Steffano designed Full Floating linkage monoshock rear suspension.  Large tube diameter BMW K100 front end assembly.  Kosman front wheel hub and Bladerunner floating rotor.  Kosman built...
KZ1000 Dragbike
Custom dragbike built in the mid 1970’s while in the Fell Street San Francisco shop.  This bike featured a braced frame, motor mount kit, offset bearing support, large front rotor and rear disc brake...