Honda TRX450R Service Manual page 11

GENERAL INFORMATION
ITEM
ENGINE
CARBURETOR
DRIVE TRAIN
ELECTRICAL
Cylinder arrangement
Bore and stroke
Displacement
Compression ratio
Valve train
Intake valve opens at 1 mm (0.04 in) lift
Intake valve closes at 1 mm (0.04 in) lift
Exhaust valve opens at 1 mm (0.04 in) lift
Exhaust valve closes at 1 mm (0.04 in) lift
Lubrication system
Oil pump type
Cooling system
Air filtration
Engine dry weight
TRX450ER
TRX450R
Carburetor type
Venturi diameter
Clutch system
Clutch operation system
Transmission
Primary reduction
Final reduction
Gearratio 1st
2nd
3rd
4th
5th
Gearshift pattern
Ignition system
Starting system
Charging system
Regulator/rectifier
Lighting system
SPECIFICATIONS
Single cylinder, transversely installed
96.0x62.1 mm (3.78x2.44 in)
449.4 cm
3
(27.42 cu-in)
12.0:1
Chain drive and OHC with rocker arm
10° BTDC
40° ABDC
40° BBDC
10° ATDC
Forced pressure (wet sump)
Trochoid
Liquid cooled
Oiled urethanefoam
34.3 kg (75.6 lbs)
33.4 kg (73.6 lbs)
Piston valve
40 mm (1.6 in)
Multi-plate, wet
Cable operated
Constant mesh, 5-speed
2.739 (63/23)
2.923(38/13)
2.230(29/13)
1.785(25/14)
1.437(23/16)
1.181 (26/22)
0.962 (26/27)
Left foot operated return system, 1-N-2-3-4-5
AC-CDI
Electric starter motor (TRX450ER)
Kickstarter (TRX450R)
Triple phase output alternator
Triple phase full wave rectification
Battery (TRX450ER)
12 V DC output (TRX450R)
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