If the next wave of custom motorcycling is focused on retro sportbikes, we’d be okay with that. The 90s are stacked with potent four-cylinder donors, hidden under massive fairings with loud graphics. So there’s potential there?if you know how to liberate it.
Named ‘Bushido’ after the ancient Samurai code of honor, this stripped-down Suzuki GSX-R1100 features a Katana-inspired headlight, and a seat that’ll barely keep you attached to the bike. Now consider that it produces 156 hp and 115 Nm, and it’s just the right brand of mad science.

It’s the work of Rusty Wrench Motorcycles in Faro, Portugal, and it balances both cafe racer and streetfighter sensibilities, with a few nods to Suzuki’s Japanese heritage. ?The moto is a tribute to Suzuki Katana from the 80s,? says RW front man, Francisco Correia, ?and the name is a tribute to the way of life of the Samurai.? Starting with a 1996-model GSX-R, Francisco tore off its fairings and body panels, until only the tank remained. That left the Suzuki’s square aluminum frame and beefy four-cylinder motor exposed, creating a more mechanical and aggressive aesthetic. The tank’s adorned with a CNC-machined gas cap from Slingshot Racing, and an upgraded venting hose that looks miles better than the stock rubber tubing.

Just behind the tank is a stubby seat, with a sharp kick to catch the rider. The upholstery is top shelf: a combination of Alcantara and perforated leather,...