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Honda CRF450R 2006 User Manual

Honda CRF450R 2006
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Personal Fit Adjustments
134 Adjustments for Competition
The following suggestions may make your ride
both more comfortable and more responsive to
your control input.
Control Positioning
Position the control levers so that you can use
them comfortably when seated and standing.
Adjust the mounting bolt 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 Honda Thread Lock 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.
(1) control lever mounting bolts
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.
Handlebar Position, Width & Shape
Position the handlebar so that both gripping
the bar and operating the controls is
comfortable while both seated and standing,
while riding straight ahead and turning.
Tighten the forward bolts first.
The handlebar position may be moved
forward either 3 mm (using optional
handlebar lower holders) or 6 mm (by rotating
the standard holders 180 degrees). Refer to
the Service Manual for installation
instructions. Be sure to check control cable
and wiring harness routing after the
adjustment.
Chamfer the edges to remove burrs and other
irregularities or roughness after sawing the
handlebar.
An alternate handlebar shape, through varying
rise or rearward sweep dimensions, will
provide further adjustment to riding position
and may better suit your particular body size
or riding style. Each of the ergonomic
dimensions of the machine were determined
to suit the greatest possible number of riders
based on an average size rider.
(1)
(1)
Handlebar width can be trimmed with a
hacksaw to better suit your particular shoulder
width and riding preference. Think this
through carefully and cut off just a small
amount at a time from both sides equally. It is
obviously much easier to make the handlebar
narrower than it is to add material.

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Honda CRF450R 2006 Specifications

General IconGeneral
Engine Type449cc liquid-cooled single-cylinder four-stroke
Bore and Stroke96.0mm x 62.1mm
Compression Ratio12.0:1
InductionKeihin 40mm flat-slide carburetor with throttle position sensor (TPS)
TransmissionClose-ratio five-speed
Final Drive#520 chain; 13T/48T
Front BrakeSingle 240mm disc with twin-piston caliper
Rear BrakeSingle 240mm disc
Front Tire80/100-21
Rear Tire110/90-19
Wheelbase58.3 inches
Seat Height37.6 inches
Ground Clearance13.4 inches
Fuel Capacity1.9 gallons
IgnitionCDI
Rear SuspensionPro-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); 12.4 inches travel

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