Suzuki has released full technical details of its 2019 RM-Z250, with the MX2 machine getting a new frame, swingarm and suspension, plus a new engine that produces more power and torque than its predecessor. The new RM-Z250 also gets the latest version of Suzuki’s Holeshot Assist Control and traction management systems, further improving its performance, while more angular new styling sharpens the look.
The engineers at Suzuki have been busy and the engine has been enhanced for both power and manageability, with a plethora of upgrades.
The top-half of the engine is redesigned with a new cylinder head, intake and exhaust ports. The intake-cam profile has been changed to increase valve lift and improve throttle response across the whole rev range. They have also decreased mechanical loss by redesigning the cam-chain and tensioner.
Probably the most impressive of the engine upgrades is an added second injector nearer the air-box to increase power, higher in the rpm range. To get all this new grunt to the back wheel, Suzuki have changed the gear-ratios on the second and top gears.
To complete the engine side of things, the 2019 RM-Z250 receives an extension to the exhaust by 99mm, improving power at lower engine speeds.
The frame has been put on a diet and has lost 370g whilst being stiffened up 10%.
The ergonomics have also been changed to improve the bike’s handling performance and agility. The Suzuki receives new Renthal handlebars which are straighter, lower and further forward from previous models. The footpegs have been moved forward and higher whilst the fuel tank has also been on a diet, which saves 312g, while a slimmer seat loses another 274g and makes it easier for the rider to move around.
The KYB Spring-fork suspension, bigger brakes and lighter wheels have also helped to improve handling performance.
As with most new machines, the electronics package is a focal point and the RM-Z250 is no exception.
Suzuki’s advanced Holeshot Assist Control and traction management systems are further improved for 2019, giving riders a better chance to get out of the gate ahead of the competition and stay ahead in the race. Suzuki Holeshot Assist Control (S-HAC) was developed to give riders an advantage out of the gate, optimising ignition timing to help the launch be as efficient as possible. Two modes either advance or retard ignition timing, with riders able to select either depending on the surface.
For full details check out the next issue of Dirtrider Downunder!