YZF-R125 specifications
| ALL NEW FOR 2009 | 
- In the supersport liter class, there�s always lots of talk about power. You expect that. What you wouldn�t have expected � until now � is a radically superior way to deliver that power. Introducing the 2009 YZF-R1, the first ever production motorcycle with a crossplane crankshaft. Crossplane technology, first pioneered in MotoGP racing with the M1, puts each connecting rod 90� from the next, with an uneven firing interval of 270�- 180�- 90�- 180�. This all but eliminates undesirable inertial crankshaft torque, which allows the engine�s compression torque to build smoothly and provide a very linear power delivery out of the corners. It�s a feeling that�s simply unmatched, like having two engines in one: the low-rpm torquey feel of a twin with the raw, high-rpm power of an inline 4. In fact, the new YZF-R1 is not a continuation of existing supersport development; it is breakthrough technology that represents a paradigm shift in both technology and performance.
 - This next-generation R1 keeps all the technological superiorities developed for its predecessor: YCC-T (Yamaha Chip Controlled Throttle) is MotoGP inspired fly-by-wire technology used to deliver instant throttle response. YCC-I is Yamaha Chip Controlled Intake which is a variable intake system that broadens the spread of power. The fuel injection system provides optimum air/fuel mixtures for maximum power and smooth throttle response.
 - The R1 features Yamaha D-MODE (or drive mode) with rider-selectable throttle control maps to program YCC-T performance characteristics for riding conditions. The standard map is designed for optimum overall performance. The �A� mode lets the rider enjoy sportier engine response in the low- to mid-speed range, and the �B� mode offers response that is somewhat less sharp response for riding situations that require especially sensitive throttle operation. Switching maps is as easy as pushing a button on the handlebar switch.
 - In keeping with this machine�s exceptional cornering ability and crisp handling, the all new aluminum frame has been designed to offer exceptional rigidity balance. The rear frame is now lightweight CF die-cast magnesium, contributing the optimum mass centralization. Suspension includes new SOQI front forks which use one of the tricks developed for our winning MotoGP bikes: independent damping. The left fork handles compression damping and the right side handles the rebound damping. And the rear shock adopts new bottom linkage for optimum suspension characteristics.
 - All new bodywork does more than add break-away-from-the- crowd styling. Completely new, the new model has a more serious, less busy look. The side fairing is smoother for a sleeker appearance. And, instead of the usual four bulb headlight design, the �09 model now has only two projector-type bulbs mounted closer to the nose of the bike. This positions ram air ducts closer in for a more compact, smooth look. In addition, the rounded lenses are new and unique to the supersport industry.
 
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Features
  * Inspired by genius
  * R-series engine and chassis technology
  * 6-speed gearbox
  * Aluminium swinging arm
  * Midship muffler
Engine
Engine type      Liquid-cooled, 4-stroke, 4-valve, single cylinder, SOHC
Displacement    124.66 cc
Bore x stroke      52.0 x 58.6 mm
Compression ratio    11.2:1
Maximum power    11.0 kW (15 PS) @ 9,000 rpm
Maximum torque    12.24 Nm (1,25 kg-m) @ 8,000 rpm
Lubrication system    Wet sump
Fuel System    Fuel injection
Clutch type    Wet, multiple-disc coil spring
Ignition system    TCI
Starter system    Electric
Transmission system    Constant mesh, 6-speed
Final transmission    Chain
Fuel tank capacity    13.8 L
Oil tank capacity    1.15 L
Chassis    -
Chassis:    Steel Deltabox
Front suspension system    Telescopic forks
Front travel    130 mm
Rear suspension system    Swingarm (monocross)
Rear travel    125 mm
Front brake    Single disc, Ø 292 mm
Rear brake    Single disc, Ø 230 mm
Front tyre    100/80-17 M/C
Rear tyre    130/70-17 M/C
Dimensions    -
Length    2,015 mm
Width    660 mm
Height    970 mm
Seat height    818 mm
Wheel base    1,355 mm
Minimum ground clearance    155 mm
Dry weight    126.5 kg