Honda CRF450L 2019 User Manual

Adjustments
Adjustments 143
This section
tells you how to fine tune your
motorcycle for maximum performance.
Off-Road Use
only
Initial suspension adjustments should be
performed after a minimum of 2 hours of easy
break-in time.
Follow the instructions given in the rear
suspension sag setting section of Rear Suspension
Adjustments to determine if your combined rider
and sprung machine weight (rider fully dressed for
competition and machine coolant, oil and fuel
levels ready for competition).
Front Suspension Adjustments ......................144
Front Suspension Air Pressure...................144
Front Suspension Damping........................145
Rear Suspension Adjustments........................146
Rear Suspension Spring Pre-Load
(Off-Road Use Only) .................................146
Rear Suspension Damping.........................147
Rear Suspension Race Sag
(Off-Road Use Only) .................................148
Suspension Adjustment Guidelines
(Off-Road Use Only) .....................................150
Tuning Tips....................................................153
Spark Plug Reading (Off-Road Use Only)...153
Chassis Adjustments ......................................154
Rear End (Off-Road Use Only) .................154
Fork Height/Angle (Off-Road Use Only)....154
Wheelbase (Off-Road Use Only)...............154
Tire Selection for Track Conditions
(Off-Road Use Only) .....................................155
Personal Fit Adjustments ...............................156
Control Positioning (Off-Road Use Only) ...156
Handlebar Position (Off-Road Use Only) ....156

Honda CRF450L 2019 Specifications

General

Engine Type	449cc liquid-cooled single-cylinder four-stroke
Bore x Stroke	96.0mm x 62.1mm
Compression Ratio	12.0:1
Fuel System	Programmed Fuel Injection (PGM-FI), 46mm throttle body
Transmission	6-speed
Rear Brake	Single 240mm disc
Front Tire	80/100-21
Rear Tire	120/80-18
Rake (Caster Angle)	28.5°
Wheelbase	58.9 inches
Seat Height	37.1 inches
Fuel Capacity	2.0 gallons
Ignition	Full transistorized ignition
Ground Clearance	12.4 inches
Front Suspension	49mm inverted fork; 12.0 inches of travel
Rear Suspension	Pro-Link Showa single shock, adjustable spring preload, compression and rebound damping
Front Brake	Single 260mm disc
Curb Weight	289 pounds
Valve Train	Unicam four-valve
Final Drive	Chain
Trail	4.6 inches (118mm)