clutch spring O-P-O

[towerrigger]

How many Orange Pink Orange primary springs does Yamaha have? I bought a O-P-O spring from the dealer and it had two different numbers on the end of the part number from the Nytro manual. From comparing the spring I bought to the manual, the spring is shorter in free length than the manual says it should be. Am I measuring the spring wrong maybe? I'm getting 75.9mm on free length and the book calls for 82.6mm??

 

[towerrigger]

Found it. Aaen's clutch book to the rescue. Looks like they make a long and short primary spring. Looks like I have the short one. Typical dealers

 

[Srxspec]

You need 90501-601L8-00 for the tall primary cover.