Searched Google, and searched SD.net... no luck.

What oil weight does KTM use in the rear shock for the SD?

My dealership couldn't give me an answer.

Lots of info for rebuilding PDS shocks for the dirt bikes... but little for the SDukes.

It's gotta be somewhere from 2.5-5wt, right?

Most shocks usd 2.5wt (forks, 5wt). When Racetech revalved my shock they used 2.5wt.