2008 TRX400EX Specifications

General Specs
Model CodeTE23
Product CodeHN1
Frame VIN LocationStamped on front of frame
Engine Serial LocationStamped on bottom of left crankcase cover
Frame Starting Number1HFTE230*84800001
1HFTE23U*84800001 (Australia)
Engine Starting NumberTE23E8300001
Owner Manual31HN1690
Service Manual61HN157
Length1822 mm (71.7 in)
Width1155 mm (45.5 in)
Height1111 mm (43.7 in)
Seat Height808 mm (31.8 in)
Wheelbase1217 mm (47.9 in)
Ground Clearance105 mm (4.1 in)
Curb Weight184 kg (405.7 lb)
Dry Weight176 kg (388.1 lb)
Caster Angle
Trail32 mm (1.26 in)
Tire & Rim
Front Tire Size (HxW-R)22x7-10
Rear Tire Size (HxW-R)20x10-9
Engine Type4 Stroke Air Cooled
Cylinder ArrangementSingle cylinder
Valve TrainOverhead camshaft - chain drive
Displacement397 cc (24.2 ci)
Bore85 mm (3.3 in)
Stroke70 mm (2.8 in)
Compression Ratio9.1:1
Cylinder Compression686-883 kPa (99-128 psi)
Starter TypeElectric
Oil Capacity - Total2.2 L (2.3 US qt; 1.9 Imp qt)
Oil Capacity - Oil Change1.8 L (1.9 US qt; 1.6 Imp qt)
Engine Dry Weight42.5 kg (93.7 lb)
Drive Train & Transmission
Clutch TypeManual
Transmission Type5 Speed with reverse
Primary Reduction2.826
First Gear2.727
Second Gear1.789
Third Gear1.363
Fourth Gear1.080
Fifth Gear0.925
Final Reduction2.785
Gear Shift PatternR - 1 - N - 2 - 3 - 4 - 5
Drive Chain (Size/Links)520/94
Identification MarkQB11A
TypePiston valve
Throttle Bore38 mm (1.5 in)
Main Jet#148
Pilot Jet/Slow Jet#38
Pilot Screw Adjustment1 Turn out
Float Level15.9 mm (0.6 in)
Engine Idle1400 RPM
Air Filter TypeOiled urethane foam
Fuel Tank Capacity10 L (2.6 US gal; 2.2 Imp gal)
Fuel Tank Reserve1.6 L (0.4 US gal; 0.4 Imp gal)
Ignition TypeAC-CDI
CDI Identification MarkCI790 (HN1M)
Spark PlugDPR8Z (NGK)
X24GPR-U (Denso)
Spark Plug Gap Max0.6-0.7 mm (0.024-0.028 in)
Pulse Generator Peak Voltage0.7 V minimum
Exciter Coil Peak Voltage100 V minimum
Lighting Coil0.1-1 Ω
Primary Coil Peak Voltage100 V minimum
Initial Ignition Timing8.0° BTDC
Voltage12 V
Power TypeDC
Alternator Max Output147 W
Alternator Max Output RPM5000 RPM
Regulator VoltageLess than 15.5 V
Front Brake TypeDual hydraulic disc
Rear Brake TypeHydraulic disc
Front SuspensionDouble wishbone
Rear SuspensionSwingarm
Front Wheel Travel209 mm (8.2 in)
Rear Wheel Travel230 mm (9.1 in)

Information on this page is provided in good faith that it is accurate, but in no way is the data guanteed to be accurate. If there are any mistakes, please contact me.