currently i have in my two rc's the Spektrum SR3000 DSM 3CH Receiver. I need to upgrade my radio being im going to get more cars so i was planning on going with Spektrum DX3R DSM2 3CH High Speed Racing Radio.

will my receivers work with this tx?

or will i need to get new rxs?

The Dx3r will work perfect with the SR3000.

Yep...

The recievers will work just fine...

The only think you will lose by using them over the updated DSM2 RX's is a little framerate speed.

Most guys aren't able to tell the difference in this anyway... And even if you were, most are able to adjust.

You however will have nothing to adjust too since you've been running the standard DSM RX's for awhile obviously.

So in summary... The SR3000's will work, they just won't be optimized to that radio.

-David