Yeah, they're the real deal.
Soak them overnight in a jar with mineral spirits and get all the dried gunk out of them, until they spin fast. Rub down the push rods with 0000 steel wool until they are clean. Take a pistol cleaning rod or something similar and rub-a-dub the inside shafts of the "goalposts" until they shine.
I put a little bit of grease on the top of the pushrods, where they interact with the "cam shaft." Most guys like to fill the inside of the "goal post" shafts with grease, but I disagree. That's unnecessary in my opinion. A light coating of grease or an aerosol lubricant with teflon works just as well, and isn't so messy, IMO.
Speed Kings get sluggish because the grease is packed in too tightly, and gets hardened with age and then the drummer has to crank on those two bottom screws to get more spring action. Take a look at the two screws on your pedal and see how far they've been cranked in by the former owner.
My Speed Kings fly and I wouldn't have any other brand or type. Out of curiousity, I tried DW and Tama a few years ago. They're over-engineered. I went right back to the Speed King.
Enjoy, MB