Milan debut for the 2026 version of the Suzuki “DR-Z400S,” the brand’s extreme enduro model now renamed “DR 74S” and reintroduced in a dual-sport configuration in order to preserve its off-road and racing spirit while integrating solutions that allow for broader, more versatile use
The engine has been completely revised with this goal in mind: a 398 cc single-cylinder unit with double overhead camshafts operating four valves, featuring titanium intake valves and hollow, sodium-filled exhaust valves to enhance heat dissipation. Equipped with dual ignition and iridium spark plugs, the engine also features a pent-roof combustion chamber partially formed in the piston crown, camshaft profiles characterized by high intake lift and optimized valve overlap, designed not only for performance but also to comply with Euro 5+ emissions regulations.
The same objective is reflected in the fuel system, which uses an electronically controlled throttle body with a 42 mm bore, and in the exhaust system, incorporating a dual-stage catalytic converter and a two-piece silencer made of stainless steel. A distinctive feature of the engine, stemming from its sporting origins, is the dry-sump lubrication system, which allows the center of gravity to be lowered without compromising generous ground clearance.
Also noteworthy is the “Suzuki Clutch Assist System,” which reduces the effort required to operate the clutch lever, and the “Suzuki Intelligent Ride System” suite of electronic rider aids. In addition to offering selectable engine maps and multi-level traction control, it allows— for the first time— the ABS to be switched off when the motorcycle is used off-road.
Title: Suzuki, extreme enduro
Translation with ChatGPT
