RX 450F 4-Stroke
NO COMPROMISES. ONLY CHECKERED FLAGS.
OVERVIEW
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More than just Bold New Graphics, the development of the RX 450F model focuses primarily on the electronics and engine power delivery for the 2027 model year. Traction Control has been further refined to be more precise and useable. The two maps have been updated to make the most of the engine, and all controls are managed via a new integrated control panel. Rider can choose Dry or Wet and loamy track conditions with a push of a button. Like the new RX 250F, the RX 450F has added launch control and quick shift, combined with the overall 450 engine package, this system will allow riders to perform at a higher level.
The electronic fuel injection system utilizes a 46mm tapered throttle body to deliver optimal air-fuel dispersion across the entire rev range, maximizing low-end throttle response while sustaining maximum power at high RPMs.”. This new component comes straight from the AMA Supercross team as well as the MXGP team in Europe. It provides increased air speed and volume to the motor which enhances the low-to-midrange power overall while providing a quicker throttle response across the board.
With its sophisticated electronic controls, race-proven throttle body, and perfectly balanced power delivery, the 2027 RX 450F is designed to elevate your ride and help you achieve a higher level of performance on every track.
Features
NISSIN BRAKING SYSTEM
Equipped with a compact, lightweight, motocross-derived Nissin front brake setup that offers immense stopping power with excellent lever modulation.
CHROMOLY STEEL FRAME
Celebrated for its natural flex, the chromoly frame absorbs harsh energy that aluminum frames transfer directly to the rider, providing immediate confidence through high-speed rollers.
SOFTER COMPOUND GRIPS
New, softer grips reduce rider fatigue and arm pump by absorbing trail vibration, allowing you to stay on the gas longer.
FACTORY GRAPHICS KIT
An eye-catching red and black livery conveys an aggressive and contemporary image to accompany the launch of the 250 4-stroke.
KYB SUSPENSION
The 48mm closed-cartridge front fork and 50mm rear shock offer industry-leading predictability, giving the rider maximum bottoming resistance on massive jumps while remaining plush over small acceleration bumps.
HEAVY DUTY CHAIN GUIDE
Features a reinforced structure to withstand mud, rocks, and hard impacts from ruts and logs. A straighter, stronger guide ensures final drive stability, prevents thrown chains, and protects the swingarm.
FLEXFIX HANDLEBAR MOUNTS
Handlebar risers utilize silent-block rubber mounts to isolate the rider's hands from engine vibration.
DUNLOP GEOMAX MX 34 TIRES
Next-generation Dunlop tires significantly improve cornering bite while shedding unsprung weight, allowing the suspension to react faster to acceleration bumps and square-edge chop.
ENGINE SPECIFICATION
| ENGINE TYPE | Single cylinder, 4 –stroke, liquid cooled, 4-valve (Titanium intake and exhaust), electric start. |
| BORE | 97mm |
| STROKE | 60.8mm |
| DISPLACEMENT | 449.3cc |
| COMPRESSION RATIO | 13.5:1 |
| VALVE TRAIN | DOHC finger followers / 4 valves |
| IGNITION | Mitsuba |
| STARTER | Electric Starter |
| ACG | Mitsuba |
| SPARK PLUG | NGK LKAR 8A-9 |
| LUBRICATION | Twin Oil Pumps w/Cartridge Filter & Separate Compartments For Engine & Transmission |
| FUEL SYSTEM | Elldor electronic injection |
| ELECTRONICAL | Launch Control, Traction Control, & Quick Shift |
| CLUTCH | Wet Diaphragm Style |
| TRANSMISSION | 5 Speed |
| FINAL DRIVE | Non-O-ring chain |
CHASSIS SPECIFICATION
| FRAME | Molybdenum steel / Double Cradle w/ quick air filter access |
| WHEELBASE | 58.0″ |
| SEAT HEIGHT | 37.2″ |
| GROUND CLEARANCE | 13.2″ |
| FOOTREST HEIGHT | 16.6″ |
| DRY WEIGHT | 230.40 lbs |
| FUEL TANK CAPACITY | 1.85 US Gallons |
| FRONT SUSPENSION | 48 mm KYB AOS closed cartridge fork, adjustable compression & rebound |
| REAR SUSPENSION | KYB 50mm body with adjustable rebound and high/low speed on compression adjustment |
| FRONT WHEEL TRAVEL | 12″ |
| REAR WHEEL TRAVEL | 11.8″ |
| FRONT BRAKE | 260 mm floating rotor |
| REAR BRAKE | 240 mm rotor |
| FRONT/REAR RIM | 21″ (Front) 19″ (Rear) |
| FRONT/REAR TIRE | Dunlop Geomax MX 34 |
$10,990.00 MSRP
- Set up fee and paperwork fees apply
- Specifications subject to change without notice.