GSC (STD) Stopper Exhaust Valve Guide Set of 8 Subaru WRX 15-21 / BRZ 13-20 / FR-S 13-16 | 3105-8 Bearings While working with teams such

While working with teams such as RealTime Racing and Spoon Sports

PTFE is a coating that resists heat and corrosion

2 (TB6060-SB05A) is engineered to enhance the performance by optimizing exhaust flow and reducing turbo lag

The setup has seperate height and preload adjustments allowing for optimal adjustment and allowing full strut travel at all times along with pillowball upper mounts or top mounts*

GSC (STD) Stopper Exhaust Valve Guide Set of 8 Subaru WRX 15-21 / BRZ 13-20 / FR-S 13-16 | 3105-8 Bearings While working with teams suchProduct Fitment: 2013 2016 Scion FR S 2013 2020 Subaru BRZ 2015 2021 Subaru WRX Upgrade your FA20 engines valvetrain reliability and precision with the GSC Power Division Stopper Style Exhaust Valve Guides. Designed for high performance and forced induction applications, these valve guides deliver superior strength and wear resistance compared to factory components. The stopper style design provides enhanced stability for the exhaust valve,