These tripple fin inserts are available from HKS to change the sound of your SSQBOV for a more distinct sound. The gold fin will give you a higher frequency than standard sound (standard high frequency sound) and the purple fins give you a lower than standard sound (emits a lower frequency sound than both the standard and gold SSBV inserts). These inserts are easily interchangable and give the SSQV an alternate sound and appearance.