Mechanical Documentation
A detailed archive of completed builds showcasing bare aluminum finishes, custom TIG joins, and tuned vintage powertrains.
Flagship Builds
Featured Workshop Projects
No. 11 BMW R100 Airhead
Custom monoshock chromoly frame pairing bench-balanced 980cc boxer cylinders with an unpainted brushed steel tail cowl.
No. 14 Moto Guzzi Le Mans
Hand-formed nose fairing over a high-compression longitudinal V-twin, built without digital aids or synthetic bodywork.
No. 07 Triumph 750 Twin
Stripped to a 335 lb wet weight with a hand-hammered aluminum tank, custom 2-into-1 high exhaust headers, and hand-carved ergonomics.
Rider Perspective
The analog throttle response and instant chassis feedback make modern production bikes feel sterile. Arc & Alloy builds machinery with raw mechanical character.
Julian Vance, Vintage Racer & Collector
We accept six custom commission slots per year to maintain uncompromised hand coachbuilding standards.