Want to modify or upgrade your 99-00 Honda Civic Si (EM1) with aftermarket flanges? At ClubCivic.com we have a great selection of aftermarket performance parts for your 6th generation Honda Civic Si. We have 2 Flanges available in our catalog and most have free shipping.
Vibrant Flanges - Mani Mild Steel
 14610
Vibrant Mild Steel Exhaust Manifold Flange for Honda/Acura B-Series motor 1/2in Thick 1999-2000 Honda Civic Si |
Vibrant Flanges - Mani T304SS
 1460
Vibrant T304 SS Exhaust Manifold Flange for Honda/Acura B-series motor 3/8in Thick 1999-2000 Honda Civic Si |