The 2018 Suzuki RM-Z450 is all-new from the ground up. New chassis, updated engine and spring forks.
For the first time in a decade, Suzuki has made an all-new Suzuki RM-Z450. Here are the top 20 changes made to the bike:
(1) Revision of the intake and fuel systems. (2) Suzuki’s Holeshot Assist Control (HAC) has been updated. (3) New cylinder head port shape increases tumble flow by 25%. (4) Larger air filter aperture. (5) Change of injector direction to improves combustion efficiency and throttle response.
The RM-Z450 switched from the atrocious Showa TAC forks to 49mm Showa spring forks. These are similar to what comes on the 2017-18 Honda CRF450.
(6) A higher fuel pump pressure is used to improve throttle response. (7) Throttle body has been updated. (8) A rib has been added to the piston for greater strength to support high engine output. (9) The frame and swingarm are all new. (10) The wheelbase is shorter, steering head pipe is 10mm backward and handlebar position is 7mm forward.
If you think the engine looks the same as the 2017 model, that’s because is does. The 2018 RM-Z450 engine is updated, not all-new. It has a new piston, cylinder head shape as well as other minor revisions.
(11) New Showa BFRC rear shock. (12) New 49mm Showa coil spring forks. (13) Comes standard with Bridgestone Battlecross X30 tires. (14) The seat has been reduced in weight by 246 grams. (15) Gas tank material has been changed from stamped aluminum to plastic resin to save weight.
Suzuki finally came around with an oversize front brake rotor.
(16) The rear brake master cylinder has been undated. (17) The rims and upper triple clamp have been lightened. (18) Chain guide has been updated. (19) Aggressive new character line with the design keyword “Beak DNA.” (20) Larger 270mm front brake rotor.
Instead of an aluminum tank, Suzuki switched to a plastic resin material to save weight.
The MXA wrecking crew went to Japan for the unveiling of the new bike (hereis Ricky Carmichael on it) and then to North Carolina to test it at the HGR test track. We are currently tetsing in in SoCal.