Creates a "Whoosh" noise instead of a whistle. Simple install on all HKS BOV's
Creates a "Whoosh" noise instead of a whistle. Simple install on all HKS BOV's
Creates a aggressive BOV sound. Only fits HKS BOV
This product was last offered at the strikethrough price on
11-04-2026
Used to seal the valve to the new adapter flange
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
This product was last offered at the strikethrough price on
11-07-2026