HKS BNR32/BCNR33/BNR34 RB26DETT Extension Kit
SUS304 Extension Housing and Downpipe
JDM Special Order
The HKS GT Extension Kit increases airflow by replacing the restrictive factory O2 Housing with a Stainless Steel free flowing unit. On certain applications, this replacement O2 Housing will also include an integrated downpipe for maximum performance.