Words by Justin Benson.
Revival Cycles? latest build; ?The Birdcage?, at first glance – looks to be the work of a madman. Showcasing BMW?s newest prototype boxer engine, the frame is entirely comprised of titanium (a first for the Revival team), made up of 150 separate pieces, taking a full 2 weeks, day and night, to finish welding. Almost every piece on the bike was fabricated in house, with great attention paid to design, function, and most importantly – weight. The asymmetrical frame of ?The Birdcage? weighs in at a mere 25 pounds, and thanks to the beautiful marriage of hexagonal carbon fiber suspension and CNC-machine aluminum parts, it?s light as a feather. The only hint of color on the bike comes in the form of the frame and titanium exhaust system, which were anodized, adding a subtle peacock purple and green shade to the metal.
When asked what the driving force behind the build was, head designer Alan Stulberg stated; ?I was driven by people saying it wouldn?t work?. With visions of the original Maserati Tipo 61 ?birdcage? frame dancing in his head and a few fingers of scotch in his belly, the concept was put to paper and the team got to work.

The bike was initially mocked up using welding wire to get a feel for the geometry, and due to the strength and lightness of titanium, it was chosen for the frame. The details don?t stop at the physique – the Revival team fabricated everything – from the hand shifter to the titanium axle fasteners.
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