Looks like bold new graphics and the new Wi-Fi tuning system is all that’s new on the 2021 Suzuki RM-Z range. The tuner is also backwards-compatible to the 2020 450 and 250 models and 2019 RM-Z250 too.

Included with the 2021 RM-Z250 and RM-Z450 is Suzuki’s MX-Tuner 2.0 that provides the ability to easily adjust the fuel injection and ignition system settings for optional race performance.

Using a smartphone application that wirelessly connects to the MX-Tuner’s compact transceiver, fuel delivery and ignition timing can be quickly changed. The MX-Tuner application can pre-program personalized settings into the ECM that can be activated by plugging in one of the supplied fuel couplers.
Racers and tuners can easily change settings to match performance-related updates. The application can save a number of settings for different tracks or weather conditions, plus settings can be exchanged with other racers.
Real-time engine data and run-time information are accessible to help you stay on top of bike maintenance.

2021 RM-Z450 FEATURES

Strong, Usable Engine Performance.
Great throttle response delivers high peak power.
Evolved traction management system helps the bike hook up.
Suzuki Holeshot Assist Control (S-HAC) gets you out front.
Unmatched Cornering Performance.
Frame and swingarm balance lightness with strength.
Chassis dimensions blend nimble handling with stability.
Coil spring fork provides great performance and easy tuning.
Showa BFRC (Balance Free Rear Cushion) shock settings delivers remarkable and controlled damping response.
Bridgestone X30 tires bring outstanding grip.
Large 270mm front brake rotor increases stopping power and feel
Compact rear master cylinder is designed to prevent mud from collecting on it and from catching on the rider’s boots.
Suzuki’s mobile device-based MX-Tuner 2.0 and proven fuel-coupler system.

The RM-Z250 returns with updated graphics for 2021, as well as the ability to now tune the electronic fuel injection, and ignition system for maximum performance, thanks to Suzuki’s mobile device-based MX-Tuner 2.0 and proven fuel-coupler system that are included with each 2021 RM-Z250 and RM-Z450. Now you can easily tune your motorcycle to suit track conditions or your riding preference from the convenience of your personal device. The RM-Z250 has always set the standard as the best handling 250 on the track.

The twin-spar aluminium frame and hydro-formed swingarm carry a KYB-supplied suspension that includes a coil spring fork and a shock with four-way damping force adjustment. Strong brakes and ergonomically shaped bodywork that helps keep the rider in control as the RM-Z250 carves up the racetrack.

2021 RM-Z250 FEATURES

Centre-port cylinder head increases output and throttle response.
Dual fuel injector system boosts high rpm power.
The traction management system helps the bike hook up.
Suzuki Holeshot Assist Control (S-HAC) gets you out front.
Exceptional Cornering Performance.
Frame and swingarm balances lightness with strength.
Engine placement and mounting aid chassis’ nimble handling.
Coil spring KYB fork provides outstanding performance and easy tuning.
KYB rear shock and linkage deliver remarkable control.
Race-ready Dunlop MX33 tires.
Large-diameter front brake increases stopping power and feel.
Compact rear master cylinder is designed to prevent mud from collecting on it and from catching on the rider’s boots.