This is the Blue Anodized Header for Nitro Rustler and Nitro 4-Tec 2.5.
FEATURES: Blue anodized header
Cooling fins on mounting flange
INCLUDES: One header
Two allen mounting screws
One O-ring for sealing the header
SPECS: Length: 1.64" (41mm)
Width: 1.69" (43mm)
Height: 1.34" (34mm)
Diameter: .52" (13mm)