This is the Eagle Racing Twin Motor Heatsink with Cooling Fan.
                 This Heatsink Snaps onto the Motor Can.

FEATURES: Twin motor cooling fan and heatsink
          Light Blue anodized aluminum construction

INCLUDES: One 540/550 Heatsink and Cooling Fan

REQUIRES: 540/550 sized motor

SPECS:    Length: 54mm (2.16")
          Width: 36mm (1.42")
          Height: 68mm (2.68")
                                                                     cnh 7/8/08