I was curious about these last year but never pulled the trigger. There are a few options out there including iJDMToy, DNA, and PM (my saved amazon links below). Reviews are hit or miss but also not enough to confirm quality. I like the LED bar feature of the iJDMtoy but not sure what I would wire it to. DNA seems to have all of the color options available (including smoked lens, clear lens, red lens, etc). It's a subtle change but I'm sure would compliment a nice set of tail lights. The white bar definitely stands out on darker colored 4Runners.
Amazon.com: Compatible with 4Runner 10-16 LED Third 3RD Tail Brake Light Rear Stop Lamp Smoked Housing : Automotive
Amazon.com: DNA Motoring 3BL-4RUNNER10-LED-BK LED Third Tail Brake Light [For 10-16 4Runner] : Everything Else
Amazon.com: DNA Motoring 3BL-4RUNNER10-LED-SM LED Third Tail Brake Light [For 10-16 4Runner] : Automotive
