Tuesday, January 20, 2015

2004 Yamaha XT 660 R – Motorcycles

I glanced across at my riding companions on this world launch. The European journalists already know all about the benefits of single-cylinder dirt-bikes with road wheels and brakes. Supermotard-style motorcycles are riding a surge of popularity on the other side of the world but Yamaha is taking a bit of gamble in other markets. This supermoto bike will be followed by an enduro version, the XT660R.
The launch route reminded me of riding in California’s San Gabriel Mountains and the coastal Highway 1. It’s as much fun as you’ll have on a bike and all within the legal speed limits of 35 mph in built-up areas, 70 mph on freeways and 65mph on country roads. Now liquid-cooled, the single-cylinder has a 100mm bore and 84mm stroke. Twin big-bore exhausts let the engine breathe while meeting pollution regulations.  Power delivery is crisp, with a flat torque delivery that encourages aggressive acceleration out of tight corners. It ran road wheels and brakes but retained its too-supple off-road suspension.


General information
Model:Yamaha XT 660 R
Year:2004
Category:Enduro / offroad
Rating:78.9 out of 100. Show full rating and compare with other bikes
Engine and transmission
Displacement:659.00 ccm (40.21 cubic inches)
Engine type:Single cylinder, four-stroke
Power:48.00 HP (35.0 kW)) @ 6000 RPM
Torque:58.40 Nm (6.0 kgf-m or 43.1 ft.lbs) @ 5250 RPM
Compression:10.0:1
Bore x stroke:100.0 x 84.0 mm (3.9 x 3.3 inches)
Valves per cylinder:4
Fuel system:Injection
Cooling system:Liquid
Transmission type,
final drive:
Chain
Chassis, suspension, brakes and wheels
Front suspension:Telescopic fork, diameter 43 mm
Front suspension travel:225 mm (8.9 inches)
Rear suspension:Monocross with linkage
Rear suspension travel:200 mm (7.9 inches)
Front tyre dimensions:90/90-M21
Rear tyre dimensions:130/80-M17
Front brakes:Single disc
Front brakes diameter:298 mm (11.7 inches)
Rear brakes:Single disc
Rear brakes diameter:245 mm (9.6 inches)
Physical measures and capacities
Dry weight:165.0 kg (363.8 pounds)
Power/weight ratio:0.2909 HP/kg
Seat height:855 mm (33.7 inches) If adjustable, lowest setting.
Overall height:1,235 mm (48.6 inches)
Overall length:2,240 mm (88.2 inches)
Overall width:850 mm (33.5 inches)
Ground clearance:200 mm (7.9 inches)
Wheelbase:1,500 mm (59.1 inches)
Other specifications
Color options:Racing blue, Yamaha black
Further information
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Ask questionsJoin the 04 Yamaha XT 660 R discussion group.
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