Can somebody tell me if only the 04 and up 2sk's have a dual mass flywheel? I have a 01 and need to change my clutch. not sure if i can machine my flywheel or need a new one. thanks.

 

The 01 flywheel can be turned it is 14 pounds and is a few pounds lighter than the 04 and newer AP2 unit. The AP2 flywheel can also be machined.
Like all Hondas it is a two step flywheel and both surfaces need to be machined.
This is a machined AP1 FLYWHEEL

This is the same flywheel installed

 

They are not dual mass flywheels