BLACKSQUARE Honda CB550 Custom

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The BLACKSQUARE Honda CB550 takes a deliberately spare approach to customisation. Its glossy black tank, polished metalwork and restrained brass details give the motorcycle a composed, almost architectural appearance, while the exposed four-cylinder engine keeps the machine recognisably mechanical. Based on a 1977 Honda CB550, the build is presented as an exercise in reducing a motorcycle to its essential parts without losing its road-going purpose.

Minimalism with a clear visual language

The design works because the omissions are balanced by carefully finished details. There is no front mudguard, instrument cluster, mirror or visible switchgear, leaving the silver fork legs, large brass-toned headlamp and open front wheel to dominate the view. The black tank carries the BLACKSQUARE name and a fine gold graphic, a treatment echoed on the side covers and selected fasteners.

That black-and-metal palette also gives the CB550’s engine a central role. The finned cylinder block, polished covers, exposed carburettors and sweeping exhaust headers are not hidden behind decorative bodywork. Instead, the mechanical components supply much of the bike’s texture and visual interest.

Retained Honda structure, custom-finished surroundings

According to BLACKSQUARE’s published description, only the original frame, engine, front forks, rear wheel hub and side covers were retained. The remaining components were custom-made or custom-fitted, with aluminium, brass and stainless steel used for items including the foot pegs, control pedals, seat pan, brackets, velocity stacks, exhaust pipes, wheels and spokes.

The photographs show how those materials are used selectively rather than uniformly. Chrome and polished aluminium brighten the engine and exhaust, brass adds warmth around the headlamp and intake area, and the black-painted frame and bodywork keep the overall composition from becoming overly bright. The compact seat and short rear section reinforce the lightweight, functional brief.

Weight as the organising idea

BLACKSQUARE reports a finished weight of 375 pounds (170 kg), and describes the build around maximising power-to-weight ratio. The claimed figure is especially notable because the motorcycle does not rely on an elaborate race-style body or visibly complex chassis hardware to achieve its pared-back look. Much of the effect comes from removing equipment and designing replacement parts around the same principle.

The omissions are substantial: the source states that the motorcycle has no instruments, mirrors, switches, front fender or turn signals. It also says that the headlight, taillights and license-plate holder remain functional for street use, and describes the motorcycle as street legal. Those details are part of the project’s stated specification rather than an independent assessment of compliance.

A disciplined CB550 interpretation

BLACKSQUARE avoids turning the Honda into a visual collage. The rounded tank, wire wheels and four-cylinder layout retain the character of the original platform, while the dark paint, brass accents and reduced equipment establish a much sharper identity. It is a custom CB550 whose strongest feature is not one extravagant component, but the consistency of its decisions.

Source: BLACKSQUARE website.

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