03 mountain cat 900 driveshaft?

[7.3 sled head]

Im upgrading my track this year from a 151 to 153 and want to put on new drivers but cant figure out what size the drive shaft is please help.

 

[Going West]

you have a 10 tooth 2.52 pitch driver.

 

[skidooextreme]

find one from a 04 to 06 king cat they're 3" pitch and had a 1.25 shaft. put on 8 tooth drivers.

 

[Going West]

sorry didnt ready your post clearly. dodextreme is correct, you need a 8 tooth 3" pitch driver. Look for one with the factory extroverts.