CRF 450R

CRF 450R

The 2009 CRF450R IS lighter and more powerful than its
predecessor.it includes an all-new and lighter weight fuel-
injection and ignition system which features a fuel-
injection indicator with an engine stop switch to show,
the pre-race condition of the fuel injection system a -
first for Honda.
chassis changes include a fifth-generation cast aluminum
rather than a two-part forged frame.this marks the bike,
weightless and provides increased stiffness.the latest
CRF450R also features a longer swingarm,wider rear Tyre,
HRC settings for the suspension along with a new
steering damper which has been re-valved for more linear damping.

Honda has a long history of using sophisticated fuel injection on their cars and street bikes so it's logical that the new CRF is now FI. Honda's Programmed Fuel Injection System (PGM-FI) uses a single 12-hole fuel injector to shoot fuel from the smaller 1.5-gallon tank (down from 1.9 gal) into a large 50mm throttle body. To ensure optimum running conditions the PGM-FI system utilizes throttle position, intake air temperature/pressure, coolant temperature and gear position sensors.

The all-new Unicam-equipped 449cc Single spins to 11,450 rpm and pumps out a claimed 56.3 horsepower at 8500 rpm and 37.5 lb-ft of torque at 7000 rpm.



2009 CRF450R Specifications:

Engine Type: 449cc liquid-cooled 4-stroke Single
Bore and Stroke: 96 x 62.1mm
Compression Ratio: 12.0:1
Valve Train: Unicam, four-valve; 36mm intake, titanium; 30mm exhaust, steel
Induction: Programmed Fuel Injection (PGM-FI), 50mm throttle body
Ignition: Full Transistor with three-gear-position electronic advance
Transmission: Close-ratio five-speed
Final Drive: #520 chain; 13T/48T

Front Suspension: 48mm inverted Kayaba Air-Oil-Separate (AOS) with 16-position rebound and 18-position compression damping adjust ability; 12.2 inches travel
Rear Suspension: Pro-Link Kayaba single shock with spring preload, 20-position rebound damping adjustability, and compression damping adjustment separated into low-speed (18 positions) and high-speed (1-1/2 turns); 12.6 inches travel

Front Brake: Single 240mm disc with twin-piston caliper
Rear Brake: Single 240mm disc
Front Tire: 80/100-21
Rear Tire: 120/80-19
Wheelbase: 58.7 inches
Rake (Caster Angle): 26-deg. 52 in.
Trail: 114.2mm (4.5 inches)
Seat Height: 37.6 inches
Ground Clearance: 13.1 inches
Fuel Capacity: 1.5 gallons
Curb Weight: 234.8 pounds