There are various posts on here indicating that the WR variants use standard WL frames and forks, apart from the few with chrome moly frames.
dirt-track WRs are usually shown with a brakeless front wheel which is clearly different from the WLA or WLC types, which in turn are separate types.
but what about the rear wheel? WRTT models appear with brakes. Is there a specific brakeless rear hub, or does the second sprocket bolt onto the brake drum lugs on a standard, WL type, star hub wheel? In short, do all WL/WR variants share a common rear hub?