Motorcycle specifications HondaCRF 450 R 2014 Conquering territory

since 2002, the CRF 450 R has combined a benchmark chassis with an engine bursting with power and torque.monstrate its winning potential with professional riders, while its reliability, durability and build quality have also made it very popular with enthusiasts.

the 2013 model of the CRF 450 R was distinguished by a new, more centralized frame, as well as by an oleo fork.opneumatic KYB fork, which marked a major step forward in enabling the rider to effortlessly make the most of the bike's performance, whether on the ground or in the air.

after fierce competition, the CRF 450 R went on to become the best-selling MX 450 in Europe. A benchmark that HRC engineers have used as the basis for an even more powerful 2014 version, thanks to a long list of details and improvements.

the CRF 450 R's 449 cm3 single-cylinder engine delivers high torque from the lowest revs, and benefits from a new programming system.new dual-sequence injection programming, improved dual mufflers and lightened clutch springs. These modifications are designed to provide the most direct and precise connection possible with the rear tire, favoring propulsion and the rider's feeling of all available grip. The work carried out by the engine designers on the intake and exhaust ducts has also resulted in higher revs and more power at the revs.

the 6th-generation double-beam aluminum frame remains unchanged for 2014, as do the swingarm and the Pro-Link rear suspension gearing system. The rebound and compression damping settings have been revised on the KYB shock absorber, while the ø 48 mm inverted front fork also benefits from internal modifications for more effective damping.

the characteristic styling of the CRF 450 R - combining simple form and pure function - is maintained, allowing the rider intuitive freedom of movement on the bike. Last but not least, the red and white graphics underline Honda's racing heritage.

engine

the characteristic dimensions of the water-cooled 4-valve Unicam single-cylinder remain fixed at 96 x 62.1 mm, with 36 mm intake and 31 mm exhaust valves. The intake and exhaust ducts have been redesigned to improve gas flow and combustion efficiency, measures complementedby the adoption of a new PGM-FI dual-sequence injection system offering even greater mid-range sensitivity. The injector body diameter is 46 mm, while the volumetric ratio is 12.5 to 1.

molybdenum disulphide is applied to the piston skirt to reduce friction, while 2-nozzle nozzles are used to promote cooling of the inner face of the piston. Channelling power and torque, the clutch inherits new springs to soften control without loss of efficiency or resistance. The 5-speed gearbox remains unchanged.

the short double exhaust - another essential component in the mass centralization process - features new internal fittings.the left/right junction area has been optimized to improve the balance and pressure of the gas flow. More generally, the changes made to the CRF 450 R's engine are reflected in 3 ways: higher torque at low revs for better corner exits, greater sensitivity when the throttle is only partially open for better control and, finally, greater power at high revs, enabling you to stay in the same gear for longer.

part-cycle

in order to provide the front tire with the most effectivethe CRF 450 R's 9.35kg double-beam aluminum frame has been designed "around" the 48mm KYB fork. In-depth work to centralize mass and lower the center of gravity has reduced inertia while increasing high-speed stability. A caster angle of 27.067°, a drag of 116 mm and a wheelbase of 1,492 mm translate into a particularly lively and dynamic ride, and an enhanced sense of traction. The total weight of the machine is just 111 kg when fully loaded.

the KYB oleopneumatic fork retains all its advantages over conventional steel-sprung models, in particular significantly reduced weight and greater responsiveness in the phases between compression and rebound. For 2014, the fork receives new rebound pistons, new rods and new hydraulic stop guides to improve oil flow, damping characteristics and weight. Because in a sport where the smallest benefits count, the 25 grams gained on the fork are also important. Travel remains 310 mm.

fully adjustable for rebound and damping, the fork can also be adjusted for preload.the fork is fully adjustable for rebound and damping, and can also be adjusted for preload by means of a Schrader-type air valve at the top of the fork legs. Standard pressure is 230kPa (33psi), minimum 220kPa (32psi) and maximum 250kPa (36psi). This means the CRF 450 R can be strapped in for transport by simply releasing the pressure, with no risk of damaging the seals.

the aluminum swingarm guarantees both maximum rigidity in ruts and improved traction out of corners. It works in conjunction with a compact, fully adjustable KYB monoshock (preload, rebound and compression damping at both low and high speeds). The benefit of mass centralization in this area translates into lower inertia along the machine's axis, allowing you to brake harder without compromising stability. The shock absorber stroke is 133.5 mm for a wheel travel of 315 mm.

a careful arrangement of equipment around the frame contributes to the centralization of mass: all electrical components - electronic control unit, capacitor, regulator and wiring harness - are concentrated around the injector body.

the bodywork of the 2014 CRF 450 R retains the principle of "triangular proportions" that has long characterized machines in the CRF range. Another principle used by engineers during development was that of "maximum human for minimum mechanical "R In other words, the machine is built around the man, and that's why ergonomics and mass centralization are at the heart of the CRF 450 R's shapes.

radiator scoops (designed to optimize the flow of incoming and outgoing air), side covers, an ultra-lightweight saddle and a fuel tankthe radiator scoops (designed to optimize the flow of incoming and outgoing air), side covers, ultra-light saddle and fuel tank (6.4 liters) all feature a continuity of form that gives the rider considerable freedom of movement and fluidity.

the front disc cover is in two parts to facilitate maintenance of the ø 240 mm "petal" disc and its twin-piston caliper. The rear disc of the same diameter is combined with a single-piston caliper with sintered pads (as before). Aluminum hubs limit the weight of the wheels, whose dimensions and fitment remain classic: 21 x 1.6 and 80/100-21 tires for the front, 19 x 2.5 and 110-90/19 casing for the rear.

Photo credits: Honda