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Honda CRF450RX 2020 User Manual

Honda CRF450RX 2020
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Personal Fit Adjustments
Adjustments for Competition 159
Personal Fit Adjustments
The following suggestions may make your ride
both more comfortable and more responsive to
your control input.
Position the control levers so that you can use
them comfortably when seated and standing.
Adjust the mounting bolt (1) torque of the
clutch and front brake lever assemblies so that
they can rotate on the handlebar in a fall. If an
assembly does not rotate, it may bend or break
a control lever. Make sure that the bolts are
torqued securely enough to prevent slippage
during normal operation.
Apply Pro Honda Hondalock or an equivalent to
the threads of these bolts prior to adjustment to
help ensure the correct torque is retained.
Tighten the top bolts first.
As an alternative, consider wrapping the handlebar
area under the control assemblies with Teflon tape.
Then tighten the assemblies to their normal torque.
Upon impact, the fully-tightened assemblies
should rotate on the Teflon tape.
Position the shift lever and rear brake pedal so
they are close to your boot for rapid access, but
not so close that either is depressed when
sitting or standing comfortably on your CRF.
Position the handlebar so that both gripping the
bar and operating the controls are comfortable
while both seated and standing, while riding
straight ahead and turning.
The handlebar position may be moved
backward 0.4 in (10 mm) by rotating the
handlebar lower holders 180 degrees.
The handlebar position may be moved forward
1 in (26 mm) by changing the position where
the handlebar under holder bolts is inserted
into the fork bridge holes.
Control Positioning
(1) control lever mounting bolts
(1) (1)
Handlebar Position, Width & Shape
Handlebar standard position

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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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