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Honda CRF450RX 2020 User Manual

Honda CRF450RX 2020
199 pages
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Contents
Contents
ADJUSTMENTS FOR COMPETITION
... 139
Engine Mode Select Button .......................... 140
Current Mode ............................................ 140
Mode Selection.......................................... 140
Honda Selectable Torque Control ................ 141
Current Mode ............................................ 141
Mode Selection.......................................... 141
HRC-Launch Control System ...................... 142
Front Suspension Adjustments ..................... 143
Front Suspension Air Pressure.................. 143
Front Suspension Damping....................... 144
Fork Springs.............................................. 144
Fork Oil Adjustment.................................. 145
Rear Suspension Adjustments ...................... 146
Rear Suspension Spring Pre-Load............. 146
Rear Suspension Damping ........................ 147
Rear Suspension Race Sag........................ 149
Suspension Adjustments for Track
Conditions .................................................... 151
Suspension Adjustment Guidelines .............. 152
Tuning Tips .................................................. 155
Spark Plug Reading................................... 155
Chassis Adjustments ..................................... 156
Rear End.................................................... 156
Fork Height/Angle..................................... 156
Wheelbase ................................................. 156
Gearing ......................................................... 157
Tire Selection for Track Conditions ............. 158
Personal Fit Adjustments .............................. 159
Control Positioning ................................... 159
Handlebar Position, Width & Shape ......... 159
TIPS...............................................................161
Transporting Your Motorcycle .....................162
Storing Your Honda ......................................163
Preparation for Storage..............................163
Removal from Storage...............................163
You & the Environment ................................164
Troubleshooting ............................................165
TAKING CARE OF THE
UNEXPECTED............................................167
If a Fuse Blows .............................................168
If Your Battery Is Low (or Dead) .................169
TECHNICAL INFORMATION.................171
Vehicle Identification ....................................172
Serial Numbers ..........................................172
Specifications ................................................173
Torque Specifications ...................................175
Nuts, Bolts, Fasteners ................................175
Oxygenated Fuels ..........................................178
Competition Logbook ...................................179
Optional Parts List ........................................181
Spare Parts & Equipment ..............................182
Spare Parts .................................................182
General Tools.............................................182
Honda Special Tools..................................182
Chemical Products.....................................182
Other Products ...........................................182
Wiring Diagram ............................................183
CONSUMER INFORMATION .................185
Authorized Manuals ......................................186
Contacting Honda .........................................187
Your Honda Dealer .......................................188
INDEX .......................................................... 190
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Honda CRF450RX 2020 Specifications

General IconGeneral
Engine Type449cc liquid-cooled single-cylinder four-stroke
Bore x Stroke96.0mm x 62.1mm
Compression Ratio13.5:1
InductionProgrammed Fuel Injection (PGM-FI), 46mm throttle body
IgnitionFull transistorized ignition
Transmission5-speed
Final DriveChain
Front BrakeSingle 260mm disc with twin-piston caliper
Rear BrakeSingle 240mm disc
Front Tire80/100-21
Rear Tire120/80-18
Wheelbase58.3 inches
Seat Height37.8 inches
Ground Clearance12.9 inches
StarterElectric
Trail4.6 inches
Front Suspension49mm inverted fork with rebound and compression damping adjustability; 12.0 inches travel
Rear Suspension12.4 inches of travel
Valve TrainUnicam, four-valve

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