PMAS bell mouth for VMP throttle body

Fits all VMP TwinJet G,F,J series and Monoblade F, J series throttle bodies**

**Does not fit new SM163-G and 137-G

Converts the 5" opening on VMP throttle bodies to take a 6" coupler. Radiused entry aka “bell mouth” opening for maximum power and flow. With no intake at all reduced turbulence. With an intake or OTR setup it increases flow.