2006 Honda CRF450X
Based on Honda's phenomenal big-bore 4-stroke motocross champion, the
CRF450R, the trail-blazing CRF450X takes off-road riding to a new level of fun and
excitement. The lightest and most powerful off-road racer and fun bike to ever raise a
roost and put a smile on your face, the CRF450X features dynamic power, a slim form
and rugged, long-travel suspension systems for light, neutral handling and performance
that really goes places. And with the effortless ease of its push-button electric starting,
the CRF450X gives you the most satisfying blast high-powered off-road riding fun you
Extreme Red (with White number plate and sidecovers)
Features and Benefits;
Push-button electric start system for easy start-ups in all conditions.
Exhaust emissions comply with all local regulations for off-road motorcycles.
Large 8.3-litre fuel tank capacity.
Resettable, easy-to-read three-digit competition odometer.
Spark arrester-equipped silencer complies with all local fire and noise regulations.
Powerful 35-watt halogen headlight features new lens type for wide range of
Eye-catching LED taillight integrated into rear fender.
Easy-access urethane foam air filter.
Smooth-shifting wide-ratio 5-speed transmission.
Suspension tuned for enduro riding needs.
18" rear wheel provides enhanced protection against flat tyres.
New T-ring sealed chain is narrower, stronger and lighter compared to conventional
Powerful liquid-cooled 449cm3 4-stroke 4-valve Unicam engine is designed to
produce power across a wide rpm band for easy-to-control operation.
Electric starter drives the clutch side of the crankshaft to provide superior lubrication
of starter gears, and produce a narrow engine with a short, strong crankshaft.
Lightweight, compact, internal auto decompressor system provides superb coldstarting
and hot-starting operation.
Compact, lightweight engine assembly weighs only 32.2kg.
Unique Honda Unicam valve train provides both the light weight of a compact
single-cam design and an optimum combustion chamber shape for maximum power at
all engine rpm.
Unicam valve train features a single carburised camshaft directly actuating two
35mm titanium intake valves from above. The camshaft's centre exhaust lobe actuates
two 30mm steel exhaust valves via a forked, low-friction, roller rocker-arm.
Lightweight titanium intake valves permit use of smaller valve springs, reducing
overall engine height.
High-strength, low-carbon steel crankshaft with carburised main journals for
maximum durability at sustained high-rpm operation.
ACG cover, clutch cover and cylinder head cover are made of magnesium to reduce
Forged 12.5:1 compression slipper piston is lighter than conventional designs, for
quick-revving response while maintaining excellent cylinder sealing and high-rpm
Double-carburised connecting rod utilises an updated big-end needle bearing and
thrust washers for maximum high-rpm performance and durability.
Lightweight NiCaSil cylinder lining ensures cooler and quieter operation for
extended engine life.
Press-fitted aluminium spark plug pipe fits between forked exhaust rocker arms,
further contributing to compact cylinder head design.
40mm Keihin FCR-type carburettor features four rollers on the flat slide, resulting in
very light throttle effort, smooth operation, crisp throttle response and excellent
Carburettor features a throttle position sensor (TPS) that helps maintain linear
throttle response throughout the rpm range.
Twin-sump lubrication system separates oil supply to crankshaft, piston and valve
train from supply to clutch and transmission. This ensures a steady supply of cool oil
to the clutch, eliminates clutch and transmission material contamination of the engine
oil, reduces the amount of circulating oil and permits the use of a smaller oil pump.
Vertically split crankcases feature a built-in oil pump, reducing weight compared to
Exhaust system uses a lightweight stainless steel exhaust header and muffler
equipped with spark arrester.
Dual radiators feature a refined core area for improved heat dissipation compared to
conventional dual-radiator designs. Coolant recovery tank is located underneath
engine for improved mass centralisation. Coolant tank is protected by a plastic shield.
Gear-driven balancer reduces vibration and drives the water pump. Eight clutch
plates provide the surface area necessary to handle the engine's massive torque, while
carefully matched clutch springs provide a light feel at the lever.
New T-ring-sealed chain is approximately 1.6mm narrower, and stronger compared
to conventional chains.
Durable 5-speed wide-ratio transmission.
All-new 4th-generation twin-spar aluminium frame is derived from Honda's CR
series of championship motocrossers.
Forged aluminium steering head and tapered down-tube section designed for
optimised frame rigidity. In addition, tall swingarm pivot plates and narrow frame
spars create a narrow overall frame cross-section for superb rider comfort and
Semi-double-cradle frame design features a single, large-diameter tapered downtube.
Two rugged box-section rails attach to the base of the downtube and support the
engine. A forged aluminium steering head provides a compact and extremely durable
mount for the frame spars and engine downtube.
The aluminium frame design is matched to rider ergonomics to maximise handling
and control operation.
Lightweight, 47mm Showa inverted twin-chamber cartridge-type fork with
aluminium dampers is derived from the CRF450R and features settings unique to the
CRF450X. The fork offers 315mm of travel, 16-step rebound and 16-step compression
damping adjustability. The inner surfaces of the front fork outer tubes receive the
same honing treatment as Works bikes for low-friction operation.
Pro-Link rear suspension system features a single, fully adjustable Showa rear
damper and 315mm of wheel travel, separate low-speed (13-step) and high-speed (3.5
turns) compression damping adjusters, and 17-step adjustable rebound damping.
Large 50mm rear damper piston diameter provides consistent performance under
demanding riding conditions.
Swingarm features a dual-axis, double-taper design with a large cast aluminium
cross-member offering high strength and light weight.
Front wheel features large-diameter front axle and wide wheel-bearing span for
18" rear wheel features same lightweight rear hub and HRC Works-type lightweight
aluminium spoke nipples as used on CRF450R for reduced unsprung weight.
Rear axle diameter of 25mm and large-diameter bearings provide optimum rigidity
and strength to withstand torturous track conditions.
Large, 240mm front and rear brake rotors.
Compact dual-piston front brake calliper, anodised aluminium brake pistons and
lightweight front brake rotor minimise unsprung weight for improved turning and
HRC Works-type rear brake system integrates the rear master cylinder and fluid
reservoir, eliminating the need for a remote master cylinder reservoir and hose
All plastic body components (radiator shroud, side covers, rear fender, seat base, fuel
tank, front fender, and front headlight) are designed for slimmer, more aggressive
styling and light weight.
Airbox features easy access to reusable foam air filter.
Rider ergonomics are optimised by adapting the handlebar, seat and footpeg height
to place the rider's legs at the narrowest cross-section of the frame for improved
comfort and handling feel.
Seat cushion uses foam construction that follows the shape of the fuel tank,
providing a smooth transition to increase rider mobility and comfort.
Non-slip seat cover enhances rider control.
Rear brake pedal and shift lever made of lightweight aluminium and designed to
complement the riding position. Brake pedal features optimised ratio to match
integrated rear brake master cylinder design.
Wide, cleated stainless steel footpegs are self-cleaning, resist corrosion, provide
excellent grip and fold for extra ground clearance.
Aluminium Renthal handlebar (971 bend) is rubber-mounted to reduce rider fatigue
and improve comfort.
CR handlebar holders provide three different mounting positions: standard CRF450X
holder (CRF450R/CR125R/CRF250X-type) provides +/-3mm fore or aft position to
match rider preference, and optional holder (CR250R-type) provides neutral position.
Works-type handlebar grips add to rider comfort.
Adjustable front brake lever.
Quick-adjust clutch perch.
Chain guide material offers improved wear resistance, with service life five times
greater than conventional materials.
Front disc brake cover helps protect rotor and calliper from damage.
Removable rear sub-frame allows easy maintenance.
Washable, two-stage foam air filter for optimal engine protection and easy
Comfortable, durable controls and high-quality fasteners.
Stainless steel clutch cable for long life.
Honda Racing-inspired colours and graphics.
Technical Specifications - CRF450X (ED-type);
Engine Type - Liquid-cooled 4-stroke 4-valve SOHC single
Displacement - 449cm3
Bore x Stroke - 96 x 62mm
Compression Ratio - 12 : 1
Max. Power Output - 36.2kW/7,500min-1 (95/1/EC)
Max. Torque - 46.8Nm/7,000min-1 (95/1/EC)
Carburation - 40mm Keihin FCR flat-slide carburettor with Throttle Position
Fuel Tank Capacity - 8.3 litres
Ignition System - Computer-controlled digital capacitor discharge with
electronic advance and lighting coil
Starter - Electric/Primary kick
Transmission - 5-speed
Primary Reduction - 2.739 (63/23)
Gear Ratios - 1; 2.231 (29/13), 2; 1.625 (26/16), 3; 1.235 (21/17), 4; 1.000 (19/19), 5; 0.826 (19/23)
Final Reduction - 3.923 (51/13)
Final Drive - #520 T-ring sealed chain
Frame Type - Semi-double cradle; aluminium twin-spar
Dimensions - (LxWxH) 2,176 x 825 x 1,254mm
Wheelbase - 1,478mm
Caster - 27° 17'
Trail - 112.8mm
Seat Height - 963mm
Ground Clearance - 348mm
Dry Weight - 115.7kg
Kerb Weight - 122.6kg
Type - Front, 47mm Showa inverted leading-axle twin-chamber cartridgetype
telescopic fork with 16-step adjustable compression and
rebound damping; 315mm axle travel
Rear - Pro-Link with Showa damper, adjustable low-speed (13-step)
and high-speed (3.5-turn) compression and 17-step rebound
damping; 315mm axle travel
Type - Front, Aluminium rim/wire spoke
Rear Aluminium rim/wire spoke
Rim Size - Front, 21 x 1.60
Rear - 18 x 2.15
Tyres - Front, 80/100-21 51M
Rear - 110/100-18 62M
Type - Front, 240 x 3mm hydraulic disc with dual-piston calliper and sintered
Rear - 240 x 4mm hydraulic disc with single-piston calliper and
sintered metal pads
All specifications are provisional and subject to change without notice.