One-Off 1977 BMW R100S Got the Modern Makeover It Deserved and You’ll Love It

Over the years, we’ve come across a plethora of magnificent custom builds based on BMW’s two-wheeled creatures. Although the R nineT is, by far, the workshops’ most common pick when looking for a Bavarian donor with an attitude, you’ll often stumble upon classic machines that’ve been gracefully reborn at the hands of talented moto artists.

Take, for instance, this handsome bespoke machine brewed by the pros over at Iñaki Bellver’s Ønix Design. At its core, the German beast was a weary 1977 BMW R100S. Within its steel double-cradle frame, the bike in question was supplied from the factory with an air-cooled boxer-twin mill with a generous displacement of 980cc.

At 7,000 rpm, the powerplant is fully capable of producing up to 70 hp, along with 56 pound-feet (76 Nm) of torque at 6,000 rpm. This force is handed over to a shaft final drive by means of a five-speed transmission, enabling the R100S to run the quarter-mile in just under 13 seconds. Additionally, it prides itself with a healthy top speed of no less than 119 mph (191 kph).

As for Bellver’s unique masterpiece, the Spanish experts began by lowering the creature’s front end by approximately two inches (50 mm) to level out its riding stance. At the rear, they went about replacing the standard subframe with a custom alternative, while the original shock absorbers have been discarded to make room for a pair of YSS Ecoline counterparts.

The following step consisted of rebuilding the hoops with stainless-steel spokes and powder-coated rims. As soon as the units were reassembled, Ønix proceeded to envelop both items in high-performance E270 rubber from Shinko’s inventory. Furthermore, the entire structure has been rewired, receiving a selection of modern electricals that'll have it step into the 21st century. Beneath the engine, you’ll find a lithium-ion battery neatly stored within a laser-cut box.

Up front, there's an aftermarket headlight with retro vibes, while the cockpit is kept free of clutter by a Motoscope Tiny speedometer from Motogadget. The latter sits atop a one-off top clamp that’s been painstakingly fabricated in-house. As soon as the aforementioned parts were installed, Bellver’s specialists manufactured a gorgeous selection of unique bodywork modules giving their mechanical entity a personality of its own. Those include a new front fender and one tasty leather saddle, to name a couple.

Next, the stock handlebar was discarded in favor of a Renthal unit that wears Gazzini LED bar-end turn signals. You will find a complete Shin-Yo kit handling lighting duties on the opposite end. In the powertrain department, the 980cc boxer-twin got treated to a thorough overhaul, receiving fresh air filters and gaskets, as well as revised Bing carbs and a homologated two-into-one exhaust system. To ensure this fiend sounds as sweet as it looks, the exhaust has been topped with an Ixil reverse megaphone muffler.

The finishing touch comes in the form of a metallic grey base applied to R100S’ factory fuel chamber. On the other hand, the frame wears a stealthy matte black finish that complements the gas tank, engine covers, and rear drum brake. Needless to say, Ønix Design’s team did one hell of a job reworking this Bavarian colossus, don't you think?