By model year

Yamaha YZ250F
2024 vs 2027

2 model-year records side by side. A row is compared only where manual pages print the value; spec-sheet figures are shown but not judged.

On the manual pages

7 different17 the same0 printed differently0 not compared

Different on the manual pages

The records are for different markets (2024: US version; 2027: Australia version). Figures can differ between markets, not only between years.

"Not compared" means fewer than two records have the value from a manual page; it says nothing about whether the bike changed. "Printed differently" marks descriptions (the fork, the oil, pressures with printed conversions) that the manuals word differently; read both before assuming a change.

Yamaha YZ250F stock specs by model year, each value with its source, and whether the manual pages agree
SpecManual pages20242027
Stock front sprocketSame on the manuals13TOwner's manual p. 2-413TOwner's manual p. 2-4
Stock rear sprocketDifferent on the manuals50TOwner's manual p. 2-449TOwner's manual p. 2-4
Chain pitchSame on the manuals520Owner's manual p. 2-7520Owner's manual p. 2-8
Stock final drive ratioDifferent on the manuals3.846 : 1Owner's manual p. 2-43.769 : 1Owner's manual p. 2-4
Front rimSame on the manuals21x1.6Owner's manual p. 2-521x1.6Owner's manual p. 2-5
Rear rimSame on the manuals19x2.15Owner's manual p. 2-519x2.15Owner's manual p. 2-5
Front tireSame on the manuals80/100-21 51MOwner's manual p. 2-580/100-21 51MOwner's manual p. 2-5
Rear tireSame on the manuals110/90-19 62MOwner's manual p. 2-5110/90-19 62MOwner's manual p. 2-5
ForkSame on the manualsTelescopic forkOwner's manual p. 2-5Telescopic forkOwner's manual p. 2-6
Fork travelSame on the manuals310 mm (12.2 in)Owner's manual p. 2-6310 mm (12.2 in)Owner's manual p. 2-6
Shock travelDifferent on the manuals313 mm (12.3 in)Owner's manual p. 2-6295 mm (11.6 in)Owner's manual p. 2-7
Stock fork spring rateSame on the manuals4.7 N/mmOwner's manual p. 10-34.7 N/mmOwner's manual p. 10-3
Stock shock spring rateDifferent on the manuals56 N/mmOwner's manual p. 10-454 N/mmOwner's manual p. 10-4
Engine oil specSame on the manualsSAE 10W-40 (or 10W-50, 15W-40, 20W-40, 20W-50), API SG or higher, JASO MAOwner's manual p. 2-2SAE 10W-40 (or 10W-50, 15W-40, 20W-40, 20W-50), API SG or higher, JASO MAOwner's manual p. 2-2
Engine oil capacityDifferent on the manuals730 ml (24.7 fl oz)Owner's manual p. 2-2920 ml (31.1 fl oz)Owner's manual p. 2-2
Coolant capacitySame on the manuals940 ml (31.8 fl oz)Owner's manual p. 2-2940 ml (31.8 fl oz)Owner's manual p. 2-2
Fuel capacitySame on the manuals6.2 L (1.64 gal)Owner's manual p. 2-26.2 L (1.64 gal)Owner's manual p. 2-2
Tire pressure (off-road)Same on the manuals100 kPa (15 psi) front and rearOwner's manual p. 2-5100 kPa (15 psi) front and rearOwner's manual p. 2-5
Chain slackSame on the manuals50.0-60.0 mm (1.97-2.36 in), on a maintenance standOwner's manual p. 2-750.0-60.0 mm (1.97-2.36 in), on a maintenance standOwner's manual p. 2-8
Spark plug and gapSame on the manualsNGK LMAR9E-J, gap 0.6-0.7 mmOwner's manual p. 2-2NGK LMAR9E-J, gap 0.6-0.7 mmOwner's manual p. 2-2
Seat heightSame on the manuals970 mm (38.2 in)Owner's manual p. 2-1970 mm (38.2 in)Owner's manual p. 2-1
WheelbaseDifferent on the manuals1475 mm (58.1 in)Owner's manual p. 2-11480 mm (58.3 in)Owner's manual p. 2-1
WeightDifferent on the manuals105 kg (231 lb)Owner's manual p. 2-1107 kg (236 lb)Owner's manual p. 2-1