There's not much detail in your post regarding what you're specifically looking for (i.e. bumpers on TJ or JK Rubicons), but here's mine on my '04 Rubicon. It's the Smittybilt Rock Crawler bumper. A lot of folks on the forum don't have good things to say about Smittybilt, but after three years I haven't had any problems with mine.
I have the matching rear with the spare tire carrier.
By the way, any bumper designed for your model year will fit your Jeep. There aren't any Rubicon-specific bumpers out there.