Motorcycle specifications HondaCRF 450 R 2025 Serious confrontation

With the 4-and-a-half CRF, riders have a fine product in their hands. Rather than seeking pure power, Honda has chosen to make watts usable in all circumstances. In recent years, it has set itself the task of redefining the balance between engine and chassis, with high but usable power combined with a chassis that allows riders of all levels to make the most of every bit of that power. From the rider's point of view, whether amateur or competitor, the CRF 450 R has always been a machine offering both total control and the robustness and longevity for which the brand is renowned. Somewhat battered by the competition in recent times, the CRF 450 R takes matters into its own hands for its 2025 version.

features of the Honda CRF 450 R 2025

Enhancing stability and control over the most difficult terrain was one of the objectives of the new CRF 450 R. The aluminum double-beam frame is 70% new, with a completely revised stiffness distribution, new attachment points on the lower cradle, new upper and lower tees, new front axle mounting and new gear ratios for the Pro-Link rear suspension.

Showa's suspensions have been extensively reworked to guarantee constant response throughout their entire travel. The ø 49 mm fork and rear monoshock feature new settings, while the same shock absorber is now much easier to remove. At the front, HRC has supplied drawings for a new brake caliper featuring new machining, new pistons and new grooves for the seals, all to better resist overheating over the course of a race.

For improved throttle control, power and handling, the 4-valve Unicam single-cylinder now features a more direct intake line, a longer exhaust manifold and new PGM-FI fuel injection settings. At the same time, the exhaust silencer meets the new FIM noise standards.

On the trim side, new graphics, a new design for the side covers and radiator scoops, and the presence of a Honda wing on the front fender symbolize the new CRF 450 R 2025.

the Honda CRF 450 R in more detail:

cycle part

The CRF 450 R 2025 - whose previous generations are already appreciated for their efficiency and liveliness - sees its handling further improved, with more stability in straights and corners, better shock absorption and more rear-wheel traction.

The double-beam aluminum frame has been 70% redesigned, with the aim of increasing the stability of the chassis on the most difficult terrain. The main cradle tube has been redesigned, while the main beams and side gussets have been reinforced. This is combined with new side plates (swingarm support) and a new upper shock mount to generate 8% more torsional rigidity, enhancing stability. The torsional/lateral stiffness ratio is 5% higher, improving cornering performance.

Torsional rigidity in the vertical axis also increases by 4%, eliminating distortion and instability at high speeds. The frame's rear loop is now attached to highly rigid side plates rather than to the main frame beams. This change reduces the transmission of energy (and resulting movement) from the rear of the bike to the steering column by 27%.

A great deal of work was carried out on the steering column, as well as on the upper and lower tees, in order to determine a more stable and constant behavior over the entire length of the suspension travel.

At the front, in addition to revised fork bushes with new wheel axle mounts, the CRF's construction has been made stiffer, resulting in 6% less stiffness variation during suspension travel. At the rear, the 585.2 mm aluminum swingarm remains unchanged.

Caster angle and drag are set at 27.19° / 115 mm, while the wheelbase is 1,483 mm. Ground clearance is 333 mm and weight is 108 kg dry (113 kg fully loaded) with a 48.7/51.3% weight distribution (fully loaded).

Another important part of the work focused on the suspension, with the aim of making fork operation even smoother and more progressive by eliminating any points of resistance, while controlling internal friction along the entire length of the travel, for the benefit of handling consistency.

The ø 49 mm Showa inverted fork is entirely new, with every element - from the forks to all internal components - redesigned to guarantee more uniform control over the entire length of travel (310 mm), right from the initial movement. Oil characteristics have also been redefined for improved low-speed behavior. 16 settings are available, for both rebound and compression. All have been revised for 2025.

At the rear, the monoshock has benefited from a similar redesign to make its behavior more homogeneous and reduce friction at the end of the stroke. There are 17 adjustment possibilities for rebound, 13 for compression at low speeds, and 3.5 for high speeds. These settings are also all new for 2025. Finally, the structure of the Pro-Link system has been made 11% stiffer, with an optimized gear ratio and travel for smoother shock control.

Also at the rear, the 450 has been redesigned to facilitate removal and replacement of the rear shock absorber, with only four components to be removed, halving the intervention time.

Designed from components used directly on HRC factory machines, the double-piston front brake caliper benefits from new construction, new pistons and new seal grooves. This new design limits lever clearance by up to 57% when the caliper warms up, while, under these conditions, stiffness variations are reduced by 25% on the caliper itself, limiting rider fatigue by offering a more linear lever travel. The ø260mm petal disc remains unchanged, while the ø240mm rear disc and single-piston caliper remain unchanged.

DID aluminum wheels (1.60 x 21 front and 2.15 x 19 rear) are black anodized. Both are fitted as standard with Dunlop MX33F/MX33 tires for soft terrain.

The minimalist bodywork facilitates the rider's movements on the machine. The side scoops and side covers have been redesigned for 2025 in keeping with the fundamentals of the CRF philosophy, i.e. limited weight, centralized mass and ergonomics, with, in particular, the knee travel line kept as straight as possible between front and rear. New graphics reflect the change of vintage, as does the appearance of the Honda wing on the front mudguard. The titanium fuel tank holds 6.3 litres.

engine-wise

improved throttle feel, mid-range torque and maximum power are the result of HRC's development of the 2025 version of the CRF 450 R's 449cc 4-valve Unicam single-cylinder engine. The aim was clear: to get out of tight corners more quickly and easily, and to make full use of 3rd gear.

The intake flow path - air intake, filter housing, intake duct and throttle body (ø 44 mm) - is more direct than before, reducing resistance and improving throttle control. Complementing this, an extended exhaust manifold provides a more pleasant engine character in the low-to-mid-range, while the muffler - made from heat-treated aluminum to resist friction from the rider's boot - complies with the latest FIM noise standards (109 dB).

The PGM-FI fuel injection system has also been specially tuned to match the engine's new performance.

Bore and stroke dimensions remain fixed at 96 x 62.1 mm, with a volumetric ratio of 13.5 to 1. A sensor on the gearbox selector enables 3 specific ignition maps to be used, depending on the gear engaged (first and second, third and fourth, fifth). The 8-disc hydraulic clutch provides both precise control over time - since shift clearance remains constant whatever the conditions of use - and excellent feel at the lever in difficult shifts. Slippage is also limited.

Reliability has always been an important factor in the success of the CRF450R. A 5-nozzle oil nozzle cools the piston, while a double oil pump ensures optimum lubrication.

gP sauce electronics

introduced in 2020, the HSTC torque control system minimizes loss of rear-wheel grip (synonymous with lost time) by optimizing grip and traction. With no need for a speed sensor on the wheel, this system maintains full sensitivity to the throttle while managing power. Its effectiveness comes from precise intervention in ignition timing and fuel injection when abnormal variations in engine speed are detected.

The three available modes intervene on the steering according to conditions. In Mode 1, the system intervenes only very lightly and after a certain delay, which is ideal for limiting wheel spin and maintaining control in tight bends. Mode 3 is the one in which the system intervenes fastest and most strongly. This mode is particularly useful in muddy or slippery conditions. Finally, Mode 2 naturally offers an intermediary between Modes 1 and 3 in terms of speed and amplitude of intervention in tight bends.

The HSTC system can also be completely deactivated. When the engine is restarted, the system automatically reverts to the last selected mode.

The HRC-developed "Launch Control" start-assist system also has 3 options: Mode 1 with a high rev limit, Mode 2 with an intermediate limit (factory setting) and Mode 3 with a low rev limit.

Last but not least, the EMSB (Engine Mode Select Button) map selector allows you to intervene on engine characteristics. 3 mappings are available to suit rider preferences and riding conditions: Mode 1 (Standard), Mode 2 (Gentle) and Mode 3 (Aggressive).

The buttons for selecting Launch Control, HSTC, EMSB and the injection indicator are located on the left handlebar. Pressing the HSTC button for 0.5 seconds switches the system to the next mode, confirmed by a flashing green LED: 1 flash for Mode 1, 2 for Mode 2 and 3 for Mode 3.

more efficient: the Honda CRF 450 R WE

For 2025, the CRF 450R will also be available in a WE version, or "WORKS EDITION". Benefiting from all the evolutions of the classic CRF 450 R, it is distinguished by additional parts that enhance both its efficiency and attractiveness.

Manufactured on the same production line as the CRF 450 R in Kumamoto (Japan), the CRF 450 R WE features a Yoshimura exhaust and a TwinAir filter element, both of which help to optimize airflow. New ignition and starting aid settings are also among the WE's special features, as are Hinson's own clutch components (bell, nut, torque damper and outer casing), bringing this bike even closer to the official machines.

the cylinder head's intake ducts are hand-finished by specialized workers at the Kumamoto plant to improve the finish at the end of the casting process. The result is even smoother airflow and optimized power delivery.

To underline the CRF 450 R WE's special status, the cylinder head has been laser-engraved "CRF WORKS EDITION".

On the suspension side, the rear shock absorber features an ultra-strong titanium-treated axle and improved wheel travel control. This evolution goes hand in hand with a fork further enhanced by Kashima black treatment on the fork legs and titanium treatment on the dip tubes. The CRF 450 R Works Edition also features a bright red cylinder head cover, black upper and lower tees, gold DID DM2 drive chain, Renthal handlebars, special rubber grips, Throttle Jockey seat cover, black DID-LTX rims, black front axle mounts and special graphics with laser engraving on the rims and some suspension components. Compression adjustment knobs on the top of the fork tubes allow easy, tool-free adjustment.

News and media credits: Honda