There're always bikes at Stroker's and Duke's (Beltline/Midway in Addison) on Saturday nights, although predominately HDs.
Duke's has good food at reasonable prices, and Stoker's has great burgers and live music (outdoors).
Just depends whether you can hang with the real bikers at Stroker's, or the wanabees at Duke's!
You might post here to get some Xers to meet at one of these (or other) spots.