Vibrant Standard Flex Coupling w/ Inner Braid Liner, 3.00" I.D. x 6.00" Long - 63006 1.125" to 1.5" Included -8 ORB to 5/8

Included -8 ORB to 5/8 barb fitting for OEM breather hose

The instructions cover this in detail for an easy installation

In order to use the CMC in the EG/EK/DC2

09-11 8th Gen Honda Civic Si:-front/back adjustable from 87%-52% stock throw (17%-48% reduction)-left/right adjustable from 90%-49% stock throw (10%-51% reduction)

Vibrant Standard Flex Coupling w/ Inner Braid Liner, 3.00" I.D. x 6.00" Long - 63006 1.125" to 1.5" Included -8 ORB to 5/8Vibrant Performance Standard Flex Couplings with Inner Braid Liner provide smooth flow while retaining flexibility in the coupling itself. The Inner Braid protects the Bellows from premature failure due to high temperature exhaust gas exposure, and is ideal for eliminating whistling caused by high velocity flowing media.