Honda’s Biggest CRF450R Update In More Than A Decade
When a bike has spent years at the sharp end of motocross racing, manufacturers usually tread carefully when it comes to major changes. Honda has taken a different approach with the 2027 CRF450R, delivering what it describes as the most comprehensive update to the machine in more than ten years.
Developed alongside Honda’s factory racing effort, the new CRF450R receives an all-new engine, a redesigned chassis and a revised suspension package aimed at improving rider connection, stability and controllable power delivery.
“The result is a machine built for riders who demand race-ready performance while still offering the adjustability required to tackle varying track conditions.”
Engine
At the heart of the CRF450R sits a 449.5cc liquid-cooled single-cylinder four-stroke engine featuring Honda’s Unicam valve train design. Fuel delivery comes via a 46mm throttle body and PGM-FI electronic fuel injection system, while a close-ratio five-speed gearbox handles drive duties.
For 2027, Honda has redesigned both the intake and exhaust systems as part of the new engine package. The goal is stronger, more controllable power throughout the rev range, allowing riders to put power to the ground more effectively when exiting corners and charging down rough straights.
Honda’s electronic rider aids remain part of the package, including HRC Launch Control, Honda Selectable Torque Control and selectable engine modes. These systems allow riders to tailor the bike’s behaviour to different track conditions and riding styles.
Chassis
One of the biggest talking points on the new CRF450R is the completely revised aluminium frame.
Honda’s engineers focused heavily on rider feedback and front-end feel, redesigning the chassis to improve stability without sacrificing agility. Combined with revised geometry, the updated platform is intended to provide improved confidence when attacking rough sections, braking bumps and high-speed corners.
The wheelbase comes in at 1491 mm , while the bike carries a claimed dry weight of 102 kg, making it noticeably lighter than the previous generation.
Suspension
Suspension duties are handled by Showa components front and rear.
Up front is a 49mm inverted Showa fork offering 310 mm of travel, while the rear uses Honda’s Pro-Link system paired with a Showa shock delivering 305 mm of travel.
The revised chassis and suspension package were developed together, allowing the bike to maintain balance while improving rider feedback across changing track conditions. Whether dealing with braking bumps, deep ruts or jump faces, the CRF450R is designed to keep the rider connected to the terrain beneath them.
Brakes
Stopping power comes from a 260mm front disc matched to a twin-piston Nissin caliper, while a 240mm rear disc handles braking duties at the back.
The setup remains purpose-built for motocross competition, delivering strong braking performance while maintaining the feel required for precise corner entry control.
Wheels And Tyres
The CRF450R rolls on lightweight aluminium wheels fitted with Dunlop MX33 tyres. The front uses an 80/100-21 tyre, while the rear wears a 120/90-19.
This combination is aimed squarely at motocross riders looking for predictable traction across a variety of track surfaces, from hard-packed circuits through to loamy and sandy conditions.
Electronics
Modern motocross bikes rely increasingly on electronics, and the CRF450R is no exception.
Honda’s rider-assist package includes selectable engine maps, Honda Selectable Torque Control and HRC Launch Control. Together, these systems allow riders to customise the bike’s power delivery and launch characteristics according to track conditions and personal preference.
The result is a machine that can be adapted for everything from slick hardpack surfaces to deep, demanding sand tracks.
Ergonomics
Honda has also paid close attention to the rider triangle on the 2027 CRF450R. The relationship between the handlebars, seat and footpegs has been refined to help riders move around the bike more naturally, whether attacking corners, navigating ruts or shifting their weight during jumps.
The slim bodywork continues Honda’s long-standing approach of keeping the bike narrow through the middle, making it easier for riders to grip the machine with their legs and move forwards or backwards as track conditions demand.
A flat seat profile further aids rider mobility, allowing quick position changes when transitioning between braking zones, corners and acceleration areas. Combined with the revised chassis package, the ergonomics are designed to help reduce rider fatigue during long motos while maintaining comfort and control.
The Bottom Line
Honda says: “The 2027 Honda CRF450R represents one of the most significant steps forward for Honda’s flagship motocrosser in recent years. With a redesigned engine, all-new chassis, updated Showa suspension package and proven electronics suite, it arrives ready for riders looking for a modern, race-focused 450 capable of tackling the demands of contemporary motocross.”
