Yamaha YZ250F

The Yamaha YZ250F was introduced in 2001 as a 4-stroke crossover model to replace the 2-stroke Yamaha YZ250. It should be noted that this step was taken by the entire Japanese "four" motorcycle manufacturers, with the only difference that 2-stroke cross-country motorcycles from Yamaha were so successful that they continue to be produced in parallel with 4-stroke and even compete in the same racing class.

The Yamaha YZ250F was based on a 1-cylinder 4-stroke liquid-cooled engine, 249 cm³, with 5 valves, producing about 42 hp. power and 29 Nm of torque.

In 2006, the model undergoes a major update, the main innovation of which was the transition from steel to aluminum frame. From that moment on, the YZ250F model became a full-fledged player in the market of cross-country models with an engine capacity of up to 250 cc.

In 2008, the model receives a new engine that has been further optimized to slightly increase maximum power and torque characteristics.

For 2010, the Yamaha YZ250F gets a new fork and relocates the engine in the frame to lower the center of gravity and improve handling. Overall optimization allowed achieving a record curb weight of 102 kg.

2014 marked the next generation of the Yamaha YZ250F. The motorcycle received a new front fork, a new engine with a fuel injection system and an increased compression ratio (from 12.5 to 13.5), a 4-valve cylinder head (instead of a 5-valve). In 2016, the model received a new front brake disc (diameter increased from 250 to 270 mm).

For 2019, Yamaha is revamping the YZ250F with a new engine (compression ratio increased from 13.5 to 13.8), a new rear shock absorber (settings changed) and an electric starter.

Based on the Yamaha YZ250F, the enduro series Yamaha WR250 was built.

Main competitors:

• Honda CRF250R
• Kawasaki KX250F
• KTM 250 SX-F
• Suzuki RM-Z250

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Specifications

Specifications Yamaha YZ250F:

Model	Yamaha YZ250F
Motorcycle type	cross
Release year	2001+
Frame	Steel Half Duplex - YZ250F (2001-2005) Aluminum Half Duplex - YZ250F (2006+)
Engine type	1-cylinder, 4-stroke
Working volume	249 cm³
Bore / stroke	77.0 x 53.6 mm
Compression ratio	12.5 - YZ250F (2001-2013) 13.5 - YZ250F (2014-2018) 13.8 - YZ250F (2019+)
Cooling	liquid
Number of valves per cylinder	DOHC, 5 Valves - YZ250F (2001-2013) DOHC 4 Valve - YZ250F (2014+)
Fuel supply system	Carburetor, 1x Keihin FCR-MX37 - YZ250F (2001-2013) Injector, 1x 44 mm - YZ250F (2014+)
Ignition type	CDI - carburetor versions TCI - injection versions
Maximum power	42.0 h.p. (30.9 kW) @ 10,500 rpm - YZ250F (2001-2007) 42.8 h.p. (31.5 kW) @ 10,500 rpm - YZ250F (2008-2010)
Maximum torque	28.4 Nm (2.9 kg-m) @ 8500 rpm - YZ250F (2001-2007) 29.5 Nm (3.0 kg-m) / 8500 rpm - YZ250F (2008-2010)
Gearbox	5-speed
Drive type	chain
Front tire size	80 / 100-21 51M
Rear tire size	100 / 90-19 57M
Front brakes	1 disc, 250mm, 2-piston caliper - YZ250F (2001-2015) Single disc, 270mm, 2-piston caliper - YZ250F (2016+)
Rear brakes	1 disc, 245 mm, 1-piston caliper
Front suspension	48mm Inverted Fork (Fully Adjustable), 300mm Travel - YZ250F (2001-2013) Inverted 48mm Fork (Fully Adjustable), 310mm Travel - YZ250F (2014+)
Rear suspension	Swingarm with monoshock (fully adjustable), stroke - 315 mm - YZ250F (2001-2005, 2014-2018) Swingarm with monoshock (fully adjustable), travel - 310 mm - YZ250F (2006-2009) Swingarm with monoshock (fully adjustable), travel - 317 mm - YZ250F (2019+)
Motorcycle length	2165mm - YZ250F (2001-2005, 2014-2018) 2176 mm - YZ250F (2006) 2160 mm - YZ250F (2007-2013) 2175mm - YZ250F (2019+)
Motorcycle width	827mm - YZ250F (2001-2005) 815mm - YZ250F (2006) 825mm - YZ250F (2007+)
Motorcycle height	1303mm - YZ250F (2001-2005, 2010-2013) 1292 mm - YZ250F (2006) 1299mm - YZ250F (2007-2009) 1280mm - YZ250F (2014-2018) 1285 mm - YZ250F (2019+)
Wheelbase	1475mm - YZ250F (2001-2005, 2014+) 1485 mm - YZ250F (2006) 1469 mm - YZ250F (2007-2009) 1466 mm - YZ250F (2010-2013)
Saddle height	998mm - YZ250F (2001-2005) 983mm - YZ250F (2006) 984mm - YZ250F (2007-2009) 988mm - YZ250F (2010-2013) 965 mm - YZ250F (2014-2018) 970mm - YZ250F (2019+)
Minimum ground clearance	382mm - YZ250F (2001-2005) 369mm - YZ250F (2006) 370mm - YZ250F (2007-2009) 375 mm - YZ250F (2010-2013) 325 mm - YZ250F (2014-2018) 335mm - YZ250F (2019+)
Acceleration to 100 km / h
Maximum speed
Fuel tank capacity	8.0 L - YZ250F (2001-2005) 7.0 L - YZ250F (2006-2009) 6.4 L - YZ250F (2010-2013) 6.2 L - YZ250F (2019+)
Motorcycle weight (dry)	93.5 kg - YZ250F (2006) 92.7 kg - YZ250F (2007-2009)
Motorcycle weight (curb)	104.5 kg - YZ250F (2001-2005) 102.0 kg - YZ250F (2010-2013) 105.0 kg - YZ250F (2014-2018) 106.0 kg - YZ250F (2019+)

Documentation

• Yamaha YZ250F