Honda CRF 250X

Make Model |
Honda CRF 250X |
Year |
2007 - 08 |
Engine |
Four stroke single cylinder, 4
valves |
Capacity |
249 cc / 15.2 cu-in |
Bore x Stroke |
78 x 52.2mm |
Cooling System |
Liquid cooled |
Compression Ratio |
12.9:1 |
Lubrication |
Wet sump |
Induction |
Keihin 37mm flat-slide with throttle position sensor (TPS) |
Ignition |
CD with electronic advance and lighting coil |
Starting |
Electric & kick |
Max Power |
28.5 hp / 21 kW @ 9000 rpm |
Max Torque |
24.2 Nm / 2.47 kg-m @ 8000 rpm |
Clutch |
Cable-operated multiplate wet clutch. |
Transmission |
5 Speed |
Final Drive |
#520 T-ring-sealed chain; 14T/53T |
Front Suspension |
47mm inverted Showa cartridge fork with 16-position rebound and 16-position
compression damping adjustability |
Front Wheel Travel |
315 mm / 12.4 in |
Rear Suspension |
Pro-Link Showa single shock with spring preload, 17-position rebound damping
adjustability, and compression damping adjustment separated into low-speed
(13 positions) and high-speed (3.5 turns) |
Rear Wheel Travel |
315 mm / 12.4 in |
Front Brakes |
Single 240mm disc 2 piston caliper |
Rear Brakes |
Single 240mm disc 2 piston caliper |
Front Tyre |
80/100-21 |
Rear Tyre |
110/100-18 |
Rake |
27° |
Trail |
118 mm / 4.6 in |
Dimensions |
Length 2174 mm / 85.5 in
Width 827 mm / 32.5 in
Height 1261 mm / 49.6 in |
Wheelbase |
1480 mm / 58.3 in. |
Seat Height |
958 mm / 37.7 in |
Ground Clearance |
346 mm / 13.6 in |
Dry Weight |
102 kg / 224.8 lbs |
Wet Weight |
115 kg / 253 lbs |
Fuel Capacity |
8.6 Litres / 2.27 gal |
Winning magazine shootouts as well as the hearts
of serious off-road riders, the CRF250X offers a rare combination of light
weight and tractable power in one of the best handling packages in the off-road
world.
- New cylinder-head porting inspired by the CRF®250R.
- New piston and rings from the CRF250R.
- Revised ignition mapping.
- Carburetor features new accelerator pump and linkage for improved throttle
response.
- New one-piece cover protects throttle cable by keeping out dirt and water.
- New front hub is lighter and stronger.
- Stronger clutch basket and clutch center for improved wear resistance.
- Lighter weight rear chain guide.

Features
- Electric start system for easy starting in all conditions.
- Gas-tank capacity is 2.2 gallons.
- Resettable, easy-to-read three-digit odometer.
- USDA-qualified muffler/spark arrester.
- Powerful 35w halogen headlight features an innovative lens for a wide range of
illumination.
- Integrated LED taillight in rear fender.
- Convenient sidestand.
- Easy-access air filter.
- Wide-ratio five-speed transmission.
- Suspension tuned for competitive off-road riding needs.
- 18-inch rear wheel for greater flat-tire protection.
- T-ring-sealed chain is narrower, stronger and lighter compared to conventional
O-ring chains.
Engine/Drivetrain
- Powerful four-stroke 249cc liquid-cooled four-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 to starter gears, and produce a narrow engine with a short, strong
crankshaft.
- Lightweight, compact, internal auto decompressor system provides superb
cold-starting and hot-starting operation.
- Compact, lightweight engine assembly weighs only 58.2 pounds.
- Unicam valve train provides the light weight of a compact single-cam design
and the optimum combustion chamber shape for maximum power at all engine rpm.
- Unicam valve train features a carburized single camshaft that directly
actuates two 31mm titanium intake valves. The camshaft exhaust lobe actuates two
26mm 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.
- Crankshaft is made of high-strength, low-carbon steel with carburized main
journals for maximum durability at sustained high-rpm operation.
- ACG cover, clutch cover and cylinder-head cover are made of magnesium to
reduce engine weight.
- Forged 12.9:1 compression slipper piston is lighter than a conventional
design, revving quickly while maintaining excellent cylinder sealing and
high-rpm power.
- Double-carburized connecting rod utilizes a big-end needle bearing for maximum
high-rpm performance and durability.
- Nikasil cylinder lining is lightweight and provides cooler and quieter
operation for extended engine life.
- 37mm Keihin FCR-type carburetor features four rollers on the flat slide,
resulting in very light throttle effort, smooth operation, crisp throttle
response and excellent rideability.
- Carburetor features a throttle position sensor (TPS) that helps maintain
linear throttle response throughout the rpm range.
- Twin-sump lubrication system separates the oil supply for the crankshaft,
piston and valve train from the clutch and transmission. This ensures a cool
supply of 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 a conventional design.
- 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 design, and coolant recovery tank.
- 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.
- T-ring-sealed chain is approximately 1.6mm narrower and is stronger compared
to conventional chains.
- Durable five-speed wide-ratio transmission.
SUSPENSION
- Fourth-generation twin-spar aluminum frame is derived from Honda's CR® series.
Forged-aluminum steering head and tapered downtube section are designed to
optimize frame rigidity. In addition, tall swingarm pivot plates and narrow
frame spars create a narrow overall frame cross-section for superb rider comfort
and maneuverability.
- 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-aluminum steering head provides a compact and
extremely durable mount for the frame spars and engine downtube.
- The aluminum frame design is matched to rider ergonomics to maximize handling
and control.
- Swingarm features a dual-axis, double-taper design with a large cast-aluminum
cross-member.
- 18-inch rear wheel features same lightweight rear hub and HRC works-type
lightweight aluminum spoke nipples as used on the CRF250R.
- Front wheel features large-diameter front axle and wide wheel-bearing span for
excellent rigidity.
- Rear-axle diameter of 25mm and large-diameter bearings provide optimum
rigidity to withstand torturous off-road conditions.
- Lightweight 47mm inverted Showa twin-chamber cartridge fork with aluminum
dampers is derived from the CRF250R but features settings unique to the CRF250X.
The fork offers 12.4 inches of travel, and 16-position rebound and 16-position
compression damping adjustability. The inner surface of the front fork
outer-tubes receives the same honing treatment as works bikes for low-friction
operation.
- Pro-Link® single-shock rear suspension system features a fully adjustable
Showa rear damper and 12.4 inches of wheel travel, separate low-speed (13
positions) and high-speed (3.5 turns) compression damping adjusters, and
17-position rebound damping.
- Rear shock damper piston diameter is 50mm for consistent performance under
demanding riding conditions.
- Compact twin-piston front brake caliper, anodized aluminum brake pistons and
lightweight front brake disc minimize unsprung weight for improved turning and
handling.
- 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
assembly.
- Large 240mm front and rear brake discs.
Additional Features
- All plastic body components (radiator shroud, side covers, rear fender, seat
base, fuel tank, front fender and front number plate) offer slim, aggressive
styling and light weight.
- Rider ergonomics are optimized 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 for increased rider control.
- Rear brake pedal and shift lever are made of lightweight aluminum and are
designed to complement the riding position. Brake pedal features optimized 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.
- Aluminum Renthal handlebar (971 bend) is rubber-mounted to reduce rider
fatigue and improve comfort.
- CR handlebar holders provide three different mounting positions: standard
CRF250X holder (CRF450R/CR125R/CRF250R-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.
- Chain guide material offers improved wear resistance, and service life is five
times greater than conventional materials.
- Front disc brake cover helps protect rotor and caliper from damage.
- Removable rear subframe allows easy maintenance.
- Washable, two-stage foam air filter for optimal engine protection and easy
maintenance.
- Comfortable, durable controls and high-quality fasteners.
- Stainless steel clutch cable for long life.
- Honda Racing™-inspired colors and graphics.
- Purchase of a new, previously unregistered Honda unit by an individual retail
user in the United States qualifies the owner for a one-year complimentary
membership in the Honda Rider's Club of America™ (HRCA®). Benefits include
online access to the Honda Common Service Manual, six issues of the bimonthly
Honda Red Rider™ magazine, travel discounts, trip routing, MSF reimbursement,
plus access to the HRCA Web site (www.hrca.honda.com). Look for the HRCA support
team at select off-road events across the country. For details on the HRCA,
dealers should call (310) 783-3958, 8:30 a.m. to 5 p.m. Pacific Time.
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