This is the blue silicone pipe coupler for the T-Maxx 2.5. This goes between the tuned pipe and the header.
Includes: One pipe coupler
Requires: Installing on the vehicle with wire ties
Inner Diameter (small end): 11.5mm
Outer Diameter (small end): 17.5mm
Inner Diameter (large end): 15.8mm
Outer Diameter (large end): 21.5mm