Vibrant Aluminum V-Band Flange for 4in OD Tubing - Female Hydraulics you've noticed a curved "bellmouth"

you've noticed a curved "bellmouth" profile at the inlet of each intake runner

2007-2008 Mitsubishi Eclipse Spyder GS 2001-2005

Manley Dodge SRT-4

2006 Honda Civic (with MT)

HKS SUPER EX-SYS ZN6/ZC6 (S-MANI_R/LMS)

Vibrant Aluminum V-Band Flange for 4in OD Tubing - Female Hydraulics you've noticed a curved "bellmouth"Vibrant Performance modular connections are an excellent alternative to traditional flanged, clamped or slip fit tube connections in both aluminum and stainless steel charge or exhaust piping. Our modular connections have earned the trust of industry professionals throughout the world due to their outstanding quality.