Scion FRS Intake Valves - GSC Power Division - Chrome Polish +1mm. Purpose-built intake valves for FA20-powered FR-S/BRZ/86 platforms, featuring a +1 mm head and a refined chrome-polished finish.

GSC Power Division’s 21-4N stainless intake valves are engineered for reliability and precise airflow control. The 36 mm head (+1 mm over stock) supports increased flow potential when paired with appropriate cylinder head work and tuning. The polished surface promotes smooth operation and easier cleaning. Designed for FA20 applications from 2014+, these valves are a solid choice for enthusiasts refreshing or upgrading their valvetrain. Professional installation is recommended.

Features

• Application: Subaru/Scion/Toyota FA20 BRZ/FR-S/86 (2014+)
• Head diameter: 36 mm (+1 mm)
• 21-4N stainless construction
• Chrome-polished finish
• Intake-side specific
• Manufactured by GSC Power Division

Have questions about fitment, supporting components, or scheduling an install? Call us at 512-982-9393 (TX) or 562-981-6800 (CA). We operate two locations in Austin, Texas and the Los Angeles, California area, where we offer installation and customization services.

If you’re planning to purchase multiple items, please contact us for potential shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov