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Technical Specifications 2003-XT660X

Engine
Engine typeLiquid cooled, 4-stroke, SOHC 4 valves
Displacement659 cc
Bore x stroke100 x 84 mm
Compression ratio10 : 1
Maximum power35.3 kW (48 HP) @ 6,000 rpm
Maximum torque58.4 Nm (5.95 kg-m) @ 5,250 rpm
Lubrication systemDry sump
Fuel SystemFuel injection, 44 mm throttle body
Clutch typeWet, multiple disc
Ignition systemTCI
Starter systemElectric
Transmission systemConstant mesh, 5 speed
Primary reduction ratio2.083
Secundary reduction ratio3.000
Final transmissionChain
Ratios gearbox 1st2.500
Ratios gearbox 2nd1.625
Ratios gearbox 3rd1.150
Ratios gearbox 4th0.909
Ratios gearbox 5th0.769
Chassis
ChassisSteel tubular diamond frame with dual tank rails
Front suspension systemTelescopic fork, Ø 43 mm
Front wheel travel200 mm
Rear suspension systemMonocross with linkage
Rear wheel travel191 mm
Caster angle25°
Trail90.2 mm
Front brakeSingle floating disc, Ø 320 mm
Rear brakeSingle disc, Ø 245 mm
Front tyre120/70-17
Rear tyre160/60-17
Front rim17 x MT3.50
Rear rim17 x MT4.25
Dimensions
Overall length2,131 mm
Overall width860 mm
Overall height1,349 mm
Seat height875 mm
Wheelbase1,485 mm
Minimum ground clearance200 mm
Dry weight173 kg
Fuel tank capacity (reserve)15 L (3.5 L)
Engine oil tank capacity2.9 L

Specifications and appearance of Yamaha products shown here are subject to change without notice and may vary according to requirements and conditions. For further details please consult your Yamaha dealer.

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