The Drift Button replaces your OEM parking brake button and has been designed to give the user the option of removing the spring so that your parking brake lever will never lock and will return to the off position automatically. This is beneficial for those of you use your parking brake while drifting to induce or maintain your drift. Installation is as easy as unscrewing your existing OEM parking brake button, removing the existing spring (if you choose), and screwing the PERRIN Drift Button into place. Details: 6061 aluminum construction Black anodized finish Designed with a large lip to easily lock your parking brake in place You can keep the OEM parking brake spring installed for an aftermarket look and standard parking brake functionality For closed circuit racing only 2013-2016 Scion FR-S Yes2013-2016 Subaru BRZ Yes2008-2018 WRX - Yes2008-2018 STI - Yes