This is the Team Integy Gun-Metal Aluminum High-Flow Aluminum Air Filter for the Traxxas Revo 2.5 and 3.3 trucks.  This looks great, and gives your truck a whole new style.

FEATURES
Housing constructed of aluminum, Gun-Metal in color
Two replaceble filter elements

INCLUDES
Aluminum housing, two foam filter elements, L-shaped rubber coupler and two zip ties

SPECS
Housing:
Height: 1.8" (46mm)
Diameter: 1.5" (38mm)
Length:  1.7"  (43mm)

Coupler:
Outer Diameter: 0.67" (17mm)
Inner Diameter: 0.55" (14mm)