Supertech Inconel Exhaust Valves (Set of 8) – Subaru FA20 / Toyota 86 / BRZ / FR-S
Fits: Subaru FA20 engines – Toyota 86 / GT86 (ZN6, 2012–2021), Subaru BRZ (ZC6, 2012–2020) and Scion FR-S. Standard head size. Fitment on the FA24 (GR86 / 2022+ BRZ) isn't confirmed, so contact us before ordering for those.
Supertech Inconel exhaust valves are made for extreme heat. Inconel holds its strength at the high exhaust temperatures seen in turbo and high-boost FA20 builds, where a factory valve is at risk. A common upgrade during a head rebuild alongside upgraded springs and guides.
| Brand | Supertech |
| Part number | SEVI-1050-8 |
| Material | Inconel |
| Head diameter | 29.00mm (standard) |
| Stem diameter | 5.45mm |
| Length | 95.15mm |
| Quantity | Set of 8 |
Also needed: fitting and lapping by a qualified engine machinist. Check valve-to-guide clearance and confirm dimensions against your head before fitting. Pair with the Supertech intake valves, GSC exhaust valve guides and GSC dual valve springs.
Usually dispatched within 5-14 business days. Fitment advice available. Contact us before ordering.
FAQ
Why Inconel for the exhaust side?
Exhaust valves run much hotter than intakes, especially on boost. Inconel keeps its strength at high temperatures.
Are these standard size?
Yes. They have a standard 29mm head, so they suit a standard head without oversize seat work.
Do I need new guides and springs?
On a head rebuild it's recommended. See the GSC guides and spring kit linked above.
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Paquetes Stage para tu Toyota 86 / Subaru BRZ (FA20)
Every part for each stage in one cart, for less than buying them separately.Toca un stage para ver exactamente qué incluye.
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Kit de turbo + embrague
$8,643Ahorra $455
Stage 2
Kit de turbo + Embrague y volante motor + Sistema de combustible + Semiejes
$11,492Ahorra $605
Stage 3
Kit de turbo + Combustible + Embrague + Semiejes + Bloque corto forjado
$20,583Ahorra $1,084
Stage 4
Kit de turbo + Combustible + Embrague de doble disco + Semiejes + Bloque largo forjado
$25,333Ahorra $1,334
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