Motocross is a relentless game, and the technology and training
needed for bike and rider to excel are too. Suzuki poured more than
40 years of open-class racebike engineering into the 2018 RM-Z450
to make it the hardest-hitting, sharpest-handling, best-balanced and
most rider-friendly production motocrosser in company history.
To give riders an even stronger winning balance, the redesigned 2018 RM-Z450 engine has more low-end torque, a flatter overall torque curve, faster and yet more controllable throttle response, and more peak power. Inside the airbox, the air-filter aperture is now 30-percent larger for enhanced airflow, and an MXGP-style mudguard helps keep mud and dirt out, contributing to greater engine durability. The outlet tube leading from the airbox to the fuel-injection throttle body is also straighter, reducing intake resistance for increased power across the rev range.
Getting holeshots is exactly what the latest version of the
Suzuki Holeshot Assist Control (S-HAC) is all about. An integral part of the electronics
package on the latest generation RM-Z range, the updated 3-stage S-HAC system
assesses throttle position and gear selection, and then adjusts ignition timing to optimise
engine output for fast launches.
The latest version of S-HAC included on the new RM-Z450 gives riders a choice of three
settings which can be quickly selected via a handlebar-mounted switch. The “A” mode is
programmed for hard surfaces, such as a concrete starting pad, clay or hard-packed dirt
where controlling wheelspin is crucial to good starts. For 2018, the “A” mode algorithms
are updated to provide even finer control as the throttle is being opened, giving the rider an
even better feel for traction in the crucial initial moments of a launch. The “B” mode is for
normal dirt conditions. Riders can also select the “Off” setting to retain standard ignition