Christoph Madaus, an avid biker for the last 33 years (he owns several Harleys, XLCR 1000, XR1000, FXR, Night Rod Special, Road King and a very special KHRM) is a talented German interior designer at Madaus Design and a custom motorcycle builder building only for himself under the label The German Motorcycle Authority. His most ambitious and well known project until now is the Twintrax Powerplus, but his most recent creation is a today’s style Bobber named Billy Bob getting its share of gold everywhere it is competing in bike shows.
The little info I was able to get about Billy Bob. Cristoph used a TGS rigid frame to install a 11o” Rev Tech engine whose original rocker boxes were replaced by a set of Xzotic ones mimicking the look of a Knucklehead. Oil tank is aluminum made and tucked under engine right side. Seat is spring mounted with a pneumatic rut. Front 2-piston caliper, rear sprocket brake kit, hand and foot controls (PM pegs) were sourced at Italian Kustom Tech. Exhaust comes from BSL. Bike is rolling on a pair of 18 x 4″ wheels dressed in Firestone rubber. German Motorcycle Authority. (photography copyright H. Roesler)