Honda CRF450R
In the new and lighter 2009 CRF450R, a brand-new engine with electronic injection, developed concurrently with an entirely new chassis of the rolling, work together to deliver the class-power 450 main with a 250-style handling. 'S an unprecedented blend of power, suspension and handling that together bring a genuine return to the first class of motocross.
In the new and lighter 2009 CRF450R, a brand-new engine with electronic injection, developed concurrently with an entirely new chassis of the rolling, work together to deliver the class-power 450 main with a 250-style handling. 'S an unprecedented blend of power, suspension and handling that together bring a genuine return to the first class of motocross.
Features & benefits
New for 2009
All the new engine's lighter
Scheduled injection (PGM-FI)
The characteristics of the aluminum frame of the new fifth generation one arm longer than stock, and a lower CG for improved acceleration and improve the traction of front wheel
Suspension front and rear of Kayaba
The redesigned airbox for increased capacity of the filter improves access
The innovative ventilation system improves mass centralization
All the new body
Engine / Drivetrain
The engine faster turn-11, 450 RPM, and most new hard, shaking off 56.3 BHP at 8500 RPM and 37.5 pounds. / ft. of torque at 7000 RPM.
The Liquid-cooled engine in the 449cc Unicam ® four-valve produces more than 125.3 horse-power per liter and now uses an axis of the cam-lobe and four arms of each yoke so that each individual exhaust valve reduces the weight and contribute it to a ceiling higher than RPM.
The engine completely redesigned to lower the total height and position it closer to the front wheel, resulting in a lower overall Cg and better weight distribution for better hold.
The height of the engine is reduced by shortening length of connecting rod 3.5mm (105.6 102.1mm) to allow a short cylinder.
The relocated main cradles of the newspaper's crankshaft (inside of flywheels) allows reduction of the large-diameter end of the connecting rod (34 33mm), reducing the weight to keep the total force. The cutaway of crankshaft eliminates the contact of the piston skirt at BDC, also reducing weight.
The combustion chamber reshaped the head of cylinder is shorter yet has a larger area of the squish volume for better spread of flame.
The valves of entry of lightweight titanium and refurbished valve springs reduce overall engine height and permit a higher RPM. Diameters new valve stem of the entry reduced (5.5 to 5.0mm).
Lower assembly of the axis of cam built into the cylinder head to reduce weight and height of the engine.
The gear came from the press-it was now the axis of cam, reducing the weight by 20 grams compared to previous bolted design.
Diplomats of the boxes of the cylinder engines with through-bolts instead of screws prisoners, allowing the removal of the cylinder frame.
The material of the forged new slider-piston allows a thinner crown, contributing to a shorter height of the cylinder. the treatment of low-friction surface assures high-rev potential.
The liner of the cylinder lightweight Ni-SIC provides a fresh operation more and more quiet for long engine life.
Self refurbished and decompression of the hot restart procedure is simplified and lighter with cam-integrated actuator axis and weight-integrated decompression for easy starting in hot or cold conditions.
The planned new system of injection (PGM-FI) uses a project from the body of the pressure regulator of 50mm with the nozzle of the injection hole fed by lightweight 12 pump 50 pounds per square inch to ensure a better atomization of fuel and precisely targeted fuel charge. The system also achieves an improvement in fuel consumption.
Monitors system PGM-FI strangle position, air entry and the temperatures of coolant, the air pressure and gear position of the trace the exact load of fuel and the ignition spark, significantly improving the response of the partial-regulatory pressure and helping to ensure excellent rideability.
CA generates extended to provide maintenance services to the PGM-FI system. Two sensors on the crankshaft position quickly determine the position aluída provide quick starts, hot or cold.
The lubrication system of the Twin-tank separates the oil subministro to train the crankshaft, piston and valve of the clutch and transmission. This ensures a source of fresh oil to the clutch, eliminates clutch and transmission of material contamination of engine oil and reduces the amount of oil movement allowing the size of the oil pump is reduced.
The ventilation system incorporates remodeled left an exhaust port of the cylinder head, length of growing density and allows the silencer is positioned near the center of mass, contributing to the distribution and handling significantly enhanced the weight.
The Gear-driven balancing reduces vibration and leads to pump water.
The mechanical seal of the new water pump improves durability.
The flow of coolant redistribute boxes outside the engine through the flange / coating of Bolton, allowing the reduction of the width of the crankcase and the cylinder, and the total weight.
Filter the oil pump built now in the box for the engine parts and reduce weight.
Eight clutch plates to hold the engine 's massive torque to the number of clutch springs is reduced from 6 to 4. This reduces centrifugal weight, allowing the engine rev more quickly.
The Kashima coating applied to the clutch basket, the center of the clutch and pressure plate improve clutch life
New for 2009
All the new engine's lighter
Scheduled injection (PGM-FI)
The characteristics of the aluminum frame of the new fifth generation one arm longer than stock, and a lower CG for improved acceleration and improve the traction of front wheel
Suspension front and rear of Kayaba
The redesigned airbox for increased capacity of the filter improves access
The innovative ventilation system improves mass centralization
All the new body
Engine / Drivetrain
The engine faster turn-11, 450 RPM, and most new hard, shaking off 56.3 BHP at 8500 RPM and 37.5 pounds. / ft. of torque at 7000 RPM.
The Liquid-cooled engine in the 449cc Unicam ® four-valve produces more than 125.3 horse-power per liter and now uses an axis of the cam-lobe and four arms of each yoke so that each individual exhaust valve reduces the weight and contribute it to a ceiling higher than RPM.
The engine completely redesigned to lower the total height and position it closer to the front wheel, resulting in a lower overall Cg and better weight distribution for better hold.
The height of the engine is reduced by shortening length of connecting rod 3.5mm (105.6 102.1mm) to allow a short cylinder.
The relocated main cradles of the newspaper's crankshaft (inside of flywheels) allows reduction of the large-diameter end of the connecting rod (34 33mm), reducing the weight to keep the total force. The cutaway of crankshaft eliminates the contact of the piston skirt at BDC, also reducing weight.
The combustion chamber reshaped the head of cylinder is shorter yet has a larger area of the squish volume for better spread of flame.
The valves of entry of lightweight titanium and refurbished valve springs reduce overall engine height and permit a higher RPM. Diameters new valve stem of the entry reduced (5.5 to 5.0mm).
Lower assembly of the axis of cam built into the cylinder head to reduce weight and height of the engine.
The gear came from the press-it was now the axis of cam, reducing the weight by 20 grams compared to previous bolted design.
Diplomats of the boxes of the cylinder engines with through-bolts instead of screws prisoners, allowing the removal of the cylinder frame.
The material of the forged new slider-piston allows a thinner crown, contributing to a shorter height of the cylinder. the treatment of low-friction surface assures high-rev potential.
The liner of the cylinder lightweight Ni-SIC provides a fresh operation more and more quiet for long engine life.
Self refurbished and decompression of the hot restart procedure is simplified and lighter with cam-integrated actuator axis and weight-integrated decompression for easy starting in hot or cold conditions.
The planned new system of injection (PGM-FI) uses a project from the body of the pressure regulator of 50mm with the nozzle of the injection hole fed by lightweight 12 pump 50 pounds per square inch to ensure a better atomization of fuel and precisely targeted fuel charge. The system also achieves an improvement in fuel consumption.
Monitors system PGM-FI strangle position, air entry and the temperatures of coolant, the air pressure and gear position of the trace the exact load of fuel and the ignition spark, significantly improving the response of the partial-regulatory pressure and helping to ensure excellent rideability.
CA generates extended to provide maintenance services to the PGM-FI system. Two sensors on the crankshaft position quickly determine the position aluída provide quick starts, hot or cold.
The lubrication system of the Twin-tank separates the oil subministro to train the crankshaft, piston and valve of the clutch and transmission. This ensures a source of fresh oil to the clutch, eliminates clutch and transmission of material contamination of engine oil and reduces the amount of oil movement allowing the size of the oil pump is reduced.
The ventilation system incorporates remodeled left an exhaust port of the cylinder head, length of growing density and allows the silencer is positioned near the center of mass, contributing to the distribution and handling significantly enhanced the weight.
The Gear-driven balancing reduces vibration and leads to pump water.
The mechanical seal of the new water pump improves durability.
The flow of coolant redistribute boxes outside the engine through the flange / coating of Bolton, allowing the reduction of the width of the crankcase and the cylinder, and the total weight.
Filter the oil pump built now in the box for the engine parts and reduce weight.
Eight clutch plates to hold the engine 's massive torque to the number of clutch springs is reduced from 6 to 4. This reduces centrifugal weight, allowing the engine rev more quickly.
The Kashima coating applied to the clutch basket, the center of the clutch and pressure plate improve clutch life
