Each leg takes a 13.1 oz of 10 weight.
Alter oil weight selection between 5 and 15 and compressed fill height between 140 mm and 220 mm to adjust damping and bottoming resistance for your needs.
The stock spring rate is 0.325 Kg/mm.
According to the Yamaha Service Manual 17.6 US oz/18.3 Imp oz per fork is the standard capacity.
625ml
Rated 40 out of the box
I belive that the forks on a 250f are the same so that would make it 100mm for a person who would weigh inbetween 160-190lbs.
Stock it would be in the 45-47hp range.
Fork oil level 105mm is standard (or 19.4 oz or 572 cc)
The 2005 Yamaha YZ250 typically requires about 400cc (or approximately 13.5 ounces) of fork oil per leg. However, it's essential to check the specific service manual for your bike to confirm the exact amount, as it can vary based on modifications or specific setup preferences. Always ensure to use the recommended viscosity of fork oil for optimal performance.
For a 2001 Yamaha YZ250, the recommended amount of fork oil is approximately 486 cc (or 16.4 ounces) per fork leg when using 5-weight oil. It's important to ensure the correct level is maintained for optimal suspension performance, so check the service manual for any specific instructions regarding air gap or oil height. Always use the recommended oil type and viscosity for best results.
72 hp @7.000rpm 90 flp's 90flp torque @ 7.500rpm
352cc of 10wt fork oiul
3.7
qt fork oil and type oil for the front fork on each side