Old-school machinery aesthetic applied to a bike. Modern proportions and design details (especially the tail and gas tank) suggest that it's not old (or is at least a recent hot-rodding involving substantial modification), but the aesthetic is classic and full of history.
Built by Lluís Ibañez Casabon of L.A. Motorcycles in Barcelona. 2006-model Sportster 883 Low. Custom tank from Salinas Boys, pre-War Harley VL style springer forks, matching Phantom headlight. Rear suspension with 11” shocks from Progressive Suspension, nestling alongside a “Flat Bob” rear fender and a replica pre-War taillight. Avon Speedmaster tires on 16” rims.