Due to the relatively complex nature of the BMW R1100S, few custom motorcycle garages have taken a swing at customising them. So when Marc walked into Moto Adonis and mentioned he wanted his R1100S turned into a more classically styled cafe racer, they jumped at the chance.

As with most builds, this one started with a teardown and an inspection of parts. They realised a new subframe would need to be fabricated to accommodate a new seat and rear cowl. The stock fuel tank was removed and placed on the pile with the fairing, windshield, seat, exhaust, and handlebars.

The fuel tank from a BMW R100S police bike was sourced and fitted, keeping the DNA intact and giving the bike an unmistakably BMW look. This new tank needed an entirely new bottom end to fit the original fuel pump, whilst still leaving room for the engine and ancillaries beneath.

The new seat and rear cowl was made in-house, the latter incorporating an LED strip along the rear to take care of brake and indicator lighting. The cowl also holds the new lithium-ion battery and some of the electrics, and a new 2-into-1 exhaust was welded up, designed to stick closely to the side of the engine and exiting out the left side through a Shark muffler.

The stock airbox made way for a new electrics box, and the twin carburettors now breathe through pod filters to increase air flow. When combined with the exhaust and Power Commander V, the engine now

A matching pair of Hagon shocks replaced the factory units front and back, and a new set of clip-ons was added with discrete m.switch controls provided by motogadget. The original instrument cluster was replaced with a single Acewell unit mounted to the lower right side, and a grill-covered headlight replaced the stock unit.

Source Silodrome & motoadonis.com