Supertech Black Nitride Exhaust Valves +0.5mm (104.2mm Length) Subaru EJ20 / EJ25 Turbo WRX / WRX STI

Supertech Black Nitride Exhaust Valves +0.5mm (104.2mm Length) - Subaru EJ20 / EJ25 Turbo - WRX / WRX STI

Supertech black nitride exhaust valves for the turbocharged EJ20 and EJ25 DOHC engines in the Subaru WRX and WRX STI, Forester GT / XT and Liberty GT. They are made from 23-8N stainless steel, and the black nitride surface treatment hardens the stem and lowers friction in the guide, which helps the valve and guide last on a hard-working engine. The head is +0.5mm oversize (32.50 mm), for heads with oversize or recut valve seats. Overall length is 104.20 mm, 0.5mm shorter than Supertech's standard-length valve for this engine.

Note: Oversize valves need the valve seats machined to suit. Not for the 2015-on WRX (VA), which has the FA20 engine. Installation by a professional engine builder is recommended.

Features

• Stainless Steel 23-8N exhaust valve
• Head diameter 32.50 mm (+0.5)
• Stem diameter 5.96 mm
• Overall length 104.20 mm (-0.5)
• Single-groove keeper
• Black nitride surface treatment for a harder, lower-friction stem
• Sold as a set of 8

Pairs Well With

• Supertech Manganese Bronze Exhaust Valve Guides - Subaru EJ20 / EJ25 Turbo - WRX / WRX STI
• Supertech Viton Exhaust Valve Stem Seals - Subaru EJ20 Turbo / EJ25 - WRX / WRX STI / Forester / Liberty
• Supertech Dual Valve Spring Kit 82 lb - Subaru EJ20 / EJ25 Turbo - WRX / WRX STI
• ARP 2000 Head Stud Kit - Subaru EJ20 / EJ25 DOHC - WRX / STI (GC / GD / GE / GH / GR / GV / VA) / Forester (SF / SG / SH) / Liberty GT (BE / BH / BL / BP)

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