Suzuki has unveiled the updated RM-Z450 and RM-Z250 for the 2027 model year. Following a successful season in which Ken Roczen claimed the 2026 AMA Supercross Championship, Suzuki has introduced a range of technical updates to both machines to further enhance their performance.

The RM-Z450 receives a completely revised KYB front and rear suspension, lighter RK Excel rims, a slimmer subframe, and an updated exhaust silencer that complies with both AMA and FIM sound regulations without compromising engine performance. The air intake and air filter have also been redesigned to improve throttle response, while the bike now comes standard with Bridgestone Battlecross X30 tyres.

The RM-Z250 has also undergone further development. It features revised KYB suspension settings, lighter RK Excel rims, new Dunlop Geomax MX34 tyres, and an updated exhaust system that also meets the latest AMA and FIM noise regulations.

To celebrate Ken Roczen’s 2026 AMA Supercross title, customers purchasing a new 2027 RM-Z250 or RM-Z450 will also qualify for the Suzuki RM Army Package. The package now includes an exclusive Championship Replica Graphics Kit, inspired by the motorcycle Roczen rode to the championship, along with a Pro Circuit T-6 exhaust system. This allows riders to give their RM-Z an authentic championship look while also enhancing performance with one of the most respected exhaust systems in motocross.

The engine remains familiar.

The single-cylinder engine itself, however, remained largely unchanged. Suzuki focused on details rather than developing a completely new engine. The modified intake system is designed to make the engine pull more smoothly across the entire rev range.

Also new is a silencer with a modified internal design. It meets the current noise regulations of the AMA and FIM without noticeably altering the engine's character.

The RM-Z250 also receives meaningful improvements.

The smaller RM-Z250 follows the same design philosophy. The aluminum frame and the four-stroke engine with dual fuel injection remain unchanged, but the fork and shock absorber have been retuned.

In addition, RK Excel rims and the latest Dunlop Geomax MX34 tires are fitted. This should make the motorcycle run more smoothly over braking bumps and generate more grip during acceleration.

As before, drivers can adjust the engine characteristics to different track conditions via the MX-Tuner 2.0 or the familiar Fuel Coupler.

Proven technology instead of large-scale experiments

While manufacturers like Ducati and Triumph have introduced completely new motocross bikes in recent years, and KTM also regularly performs extensive revisions to its models, Suzuki continues to pursue a different approach. The RM-Z platform has been considered balanced and easy to ride for years, and the developers wanted to maintain precisely this characteristic.

However, this also means that Suzuki is sticking with some traditional solutions. For example, riders of the RM-Z450 and RM-Z250 will still have to do without an electric starter in 2027. Instead of being started at the push of a button, the engine is still brought to life using the classic kickstarter – a detail that is quite noticeable in times when almost all competitors are now offering an electric starter as standard.

The changes for 2027 therefore don't point in a new direction, but rather refine the existing concept. Above all, the revised chassis, the new wheels, and the detailed work on ergonomics and air intake are intended to further improve the driving experience.

The RM-Z isn't a new model generation. Those already riding a current Suzuki won't experience a completely different character. However, those who value neutral handling and straightforward setup will get a consistently refined version of the familiar RM-Z450 and RM-Z250 in 2027.

2027 RM-Z450: Click here for more details.

2027 RM-Z250: Click here for more details.