RM-Z450R M4

MX TUNER 2.0

Standard with every new MY21 RM-Z purchased, the plug and play MX Tuner 2.0 allows users to alter the engine mapping via the intuitive smartphone WiGET app, available on iOS and Android devices.

The WiGET app comes with several pre-installed factory-developed maps for easy tuning for different riding styles and track conditions.

In just a few minutes the power delivery can be altered for softer delivery settings for hard packed surfaces or dial-in maximum power for deep, loamy conditions and amazing drive out of the corners.

For the more experienced tuner, the possibilities are practically endless with the ability to create fully customised maps with specific settings for 36 points of ignition timing and 36 points of fuel injection delivery.

49MM SHOWA SPRING FORK & BFRC SHOCK

The RM-Z450 is equipped with the latest SHOWA front and rear suspension components, delivering improved responsiveness and traction, enhanced ability to absorb impacts, better chassis stability, overall feedback to the rider, terrain feel and improved comfort.

Up front, an updated 49mm Showa coil-spring fork based on works A-type design replaces the previous air fork design. Performance has been increased significantly and offers a more consistent feeling throughout a moto. Bike set-up and daily maintenance is also much easier for a wider range of riders.

The Balance Free Rear Cushion (BFRC) rear shock design shares technology with Suzuki’s flagship GSX-R1000R sportsbike. The design balances pressure above and below the piston to better control the stroke and smooth out reactions to bumps and chop, even under severe braking.

SUZUKI HOLESHOT ASSIST CONTROL (S-HAC)

All the power in the world won’t do any good if you can’t transfer it to the ground, and Suzuki’s innovative electronics work transparently with the rider for maximum acceleration on any type of dirt or track conditions. Suzuki’s third-generation traction management system, with a significantly updated S-HAC (Suzuki Holeshot Assist Control) system and more powerful ECM (engine control module).

The RM-Z450’s S-HAC system monitors throttle position and gear position in order to adjust ignition timing for maximum acceleration through the three critical stages of a motocross start: releasing the clutch, getting drive over the starting gate, and then powering down the start straight.

Three settings are available:
A-mode: Intended for hardpack surfaces where controlling wheelspin is paramount
B-mode: For normal dirt conditions with good traction
OFF: For normal unassisted take-offs.

 

 

Electronics

Rich & Lean Couplers

Riders can adjust the engine performance to suit varied track conditions, by plugging in either of two additional fuel-setting couplers to make the most of any riding conditions. Riders can also overwrite these plugs with new maps using the MX Tuner 2.0.

Fuel Tank

6.3L Tank Capacity

Material changed from aluminium to resin, saving 312g.

Ergonomics

Renthal Fatbar Handlebars

Fitted as standard equipment , the top-shelf Renthal aluminium Fatbar offers more strength and less vibration than standard size aluminium handlebars.

Front Brake

270mm Solid Wave Rotor

The front brake disc diameter has been increased from 250mm on the previous generation to 270mm and the brake pad material has been optimised for more linear response characteristics as you brake harder.

 

 

ENGINE

DISPLACEMENT: 449cc
ENGINE: Single cylinder, liquid-cooled, DOHC
TRANSMISSION: 5-speed, constant mesh
STARTER: Primary Kick

SUSPENSION

FRONT SUSPENSION: 49mm SHOWA inverted spring fork, adjustable compression and rebound damping and spring preload
REAR SUSPENSION: Link type, SHOWA Balance Free Rear Cushion Lite shock with adjustable compression and rebound damping and spring preload

BRAKES

FRONT BRAKES: Nissin twin-piston caliper, 270mm wave disc
REAR BRAKES: Nissin single-piston caliper, 240mm wave disc

DIMENSIONS/CAPACITIES

LENGTH: 2175mm
WIDTH: 835mm
HEIGHT: 1260mm
WHEELBASE: 1480mm
SEAT HEIGHT: 960mm
FUEL CAPACITY: 6.3L
WET WEIGHT: 112K