BMW R100 RS by Untitled Motorcycles

BMW R100 RS customized by the London-based workshop Untitled Motorcycles.
New wave customs are occasionally criticized for their lack of performance when compared to modern machines costing the same money. The answer, obviously, is that outright performance is not the be-all and end-all when it comes to riding. For many people, character counts for more, however you define it.

Jakob Hölldobler is one such person, and after riding sportbikes for 14 years, he felt like a change. He wanted an all-rounder with a solid mid-range and decent handling for both shorter and longer journeys—including a European road trip with his wife. “I wanted something to play around with and get my hands dirty on. A pure and functional riding experience: wheels, frame, engine, tank and nothing more.”

BMW R100 RS customized by the London-based workshop Untitled Motorcycles.
So Jakob contacted the London-based workshop Untitled Motorcycles. “I’d seen their work online, and I liked their setup and the way Adam, Rex and Anita operate.” Jakob also wanted to be actively involved in the build, which Adam at UMC was happy to accommodate. “We’re getting more and more customers who want to feel part of the process,” Adam says. “Which is great, as it helps to show how much time goes into a build.”

Jakob and Adam decided that a 1983 BMW R100 RS would be the ideal donor. “I bought the bike knowing we’d take it apart,” says Jakob. “I rode it for a month. I liked the engine characteristics but wasn’t a great fan of the handling.”

UMC began by stripping the RS of its fairing and all other unnecessary parts to shed weight. The sub frame was shortened and the pannier rack altered to accommodate a new rear loop—which was welded in by Jakob, under the supervision of UMC co-founder Rex.

BMW R100 RS customized by the London-based workshop Untitled Motorcycles.
The rear shocks were upgraded with adjustable Wilbers items, and new rims with stainless steel spokes were fitted with Michelin M45 dual sport tires. The frame and forks were powder coated satin black, with the valve cover fins polished rather than painted.

Rex overhauled the engine with new valves, valve guides, rings, and big end shells. The heads, barrels and cases were given a thorough vapor blasting, the gearbox was stripped, and new bearings installed. Nuts and bolts were replaced with stainless steel throughout. Again, Jakob was involved. “Tapping into Rex’s technical know-how, Anita’s wiring skills, and Adam’s ideas was fantastic. I learned a lot,” he says.

The bike was completely rewired with a Motogadget speedo installed behind a custom headlight unit. A small Odyssey battery was relocated under the engine, hidden inside a hinged box designed by UMC’s San Francisco workshop.

BMW R100 RS customized by the London-based workshop Untitled Motorcycles.
Renthal bars sport UMC’s signature minimal switchgear and hidden wiring; they also hold a Yamaha R6 master cylinder and aftermarket levers. These operate reconditioned Brembos and allow modern two-finger braking.

The matt orange, black and white colour scheme was created by Jakob’s furniture designer brother and applied by UMC’s paint specialist, D-Lucks, who also reconditioned the original BMW badges. A diamond-stitched leather seat crafted by Glenn Moger, another UMC staple, complements the crosshatched grips.

So, what about that planned road trip? “My wife and I travelled over 2,000 miles in 12 days, pillion and luggage included,” says Jakob. “Worked great all the way.”

Images courtesy of Damian McFadden. Check out our coverage of previous Untitled builds here, or follow Adam & Co. via their website and Facebook page.

BMW R100 RS customized by the London-based workshop Untitled Motorcycles.