Thoroughly revised spring and damping rates inside the inverted Showa 47mm fork and piggyback single shock result in improved handling for a wide range of riders. Carefully chosen modifications improve traction and rider confidence at high speed without sacrificing the RM-Z’s legendary quick-turning ability. Modifications to the rear suspension linkage that reduce thrust backlash also improve traction and make for more consistent performance.

Engine modifications for the RM-Z250 maintain its impressive low-to-midrange power but add a thrilling high-rpm rush to the mix—precisely what expert-level riders want in a potent 4-stroke racing engine. Revised cam timing works in conjunction with updated intake ports to boost power and torque at the top of the power band. A new, stronger connecting rod and mirror finishing permits maximum engine speed increased to a stunning 13,500 rpm. Crankshaft modifications similar in spec to the championship-winning RM-Z450 increase rigidity and strength. The 249cm3 engine continues to use a DOHC, 4-valve head design with lightweight titanium valves riding in an advanced pent-roof cylinder head and semi-dry-sump lubrication system reduces internal friction. With a top-end rush like no other, the RM-Z250’s engine has to be experienced to be believed.

Derived from the pacesetting RM-Z450’s superlative system, the RM-Z250’s battery-less injection features a 43mm throttle body with progressive throttle linkage, a 16-bit computer and unique capacitor-assisted starting system. A durable, lightweight magneto-generator powers the fuel injection after starting. Because all engine systems are related in performance, a new muffler is fitted to optimize the benefits of fuel injection.

Improved radiator louvers direct more cooling air to the twin side-mounted aluminum alloy radiators for lower engine temperatures. They are joined to the outer bodywork for increased strength without adding weight.

For 2010, the RM-Z250’s number plates have a black background.

In the search for handling perfection, the RM-Z250’s twin-spar aluminum alloy frame has been redesigned with several key components to optimize rigidity balance and improve traction at high speed. The lower frame tube has thicker walls, 3.0mm versus 2.5mm, while the side rails are slightly shallower. Connecting the 19-inch rear wheel and the lightweight chassis is a new swingarm with an improved center brace for increased rigidity that also more concentrates its mass for enhanced suspension action and greater traction. To prove that Suzuki understands the importance of details, new footrest brackets are designed to prevent mud clogging.