2005-2006 Suzuki GSX-R1000 K5 Cotton T-Shirt

The 2005-2006 Suzuki GSX-R1000 K5 redefined the open class by achieving a true one-to-one power-to-weight ratio in metric measurements. Weighing just 166 kg dry while producing 178 horsepower, it dominated global superbike racing and set a performance benchmark that defined the analog sportbike era.

Powering the K5 is the T713-designated 998.6cc liquid-cooled inline-four engine. Featuring a 73.4 mm bore and 59.0 mm stroke, it utilizes dual injectors per cylinder to generate 178 horsepower at 11,000 rpm and 87.5 lb-ft of torque at 9,000 rpm, managed by Suzuki Dual Throttle Valve technology.

The twin-spar aluminum frame is paired with a six-speed transmission and a back-torque limiting slipper clutch. Fully adjustable 43mm Showa inverted forks with DLC coating and a rear Showa shock manage the chassis, providing the high-speed stability and sharp turn-in required for track dominance.

Replacing the K3/K4 generation, the K5 was succeeded by the heavier, dual-exhaust K7 in 2007. Today, it stands as a highly coveted modern classic among collectors and track-day riders because it represents the pinnacle of analog liter-bikes before electronic rider aids and strict emissions laws.