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02-06 Acura RSX & 02-05 Civic Si K20 Or K24 Custom Header: The RSX 02-06 and Civic Si 02-05 Custom ASP Header is designed in 304 stainless steel, made to not rust.; Individually fabricated to match each client's motor specs.; Designed with stepped equal length runners, and uses a true 4 into 1 merge collector to insures optimum air flow efficiency and full hp:tq potential. The megaphone/reverse cone is highly beneficial in delivering maximum peak horsepower and power bandwidth. Made in USA.

HONDA • ACURA

02-06 Acura RSX & 02-05 Civic Si K20 Or K24 Custom Header

K20 / K24

All US grade 304 stainless steel mandrel bends. Machined K series head flange. Mandrel bent equal length primary & secondary runners. ASP Headers badge, 4 beehive collector springs, 8 tabs, 1 compact true 4-1 merge collector, One o2 bung.
Megaphone, reverse cone, 3" v-band assembly or 2.5" straight pipe with standard 3 bolt exhaust flange.

DC5 & EP3 chassis
2.5" exhausts use test pipe with 3 bolt standard exhaust flange hooks up to deleted stock cat location.
3" exhausts use 3" megaphone, reverse cone and v-band assembly hooks up after stock cat custom exhaust location.