GSC Exhaust Valve 28mm Standard (Honda B-Series DOHC VTEC) GSC2039-01

GSC Exhaust Valve – Honda B-Series VTEC – 28mm STD – 6mm Stem – Single – GSC2039-01

Built for high-horsepower, high-EGT Honda applications

This standard-size 28mm exhaust valve from GSC Power Division is designed for Honda B-Series DOHC VTEC engines running extreme heat and high boost. Featuring a 6.0mm stem diameter and 102.60mm overall length, it’s crafted from Super Alloy for maximum durability in environments reaching up to 2000°F.

The valve’s chrome-polished stem enhances lubricity and wear resistance, especially when paired with GSC’s manganese bronze guides. The under-head dish is optimized for weight reduction, while swirl-polished and backcut heads improve airflow without compromising strength.

Key Specs:

• Head Diameter: 28.00mm
• Stem Diameter: 6.0mm
• Overall Length: 102.60mm
• Material: Super Alloy with chrome-polished stem
• Designed for high-EGT, high-boost setups
• Compatible with GSC3049-8 valve guides

Fitment:

- Honda Civic SiR (EG6, EG9) – 1992–1995 – B16A Gen 2
- Honda Civic Si (EM1) – 1999–2000 – B16A2
- Honda Civic Type R (EK9) – 1997–2000 – B16B
- Honda CR-X SiR (EF8) – 1989–1991 – B16A Gen 1
- Honda Integra GS-R (DC2) – 1994–2001 – B18C1
- Honda Integra Type R (DC2) – 1997–2001 – B18C5
- Honda Del Sol VTEC – 1994–1997 – B16A3
- Honda Civic SiRII (EK4) – 1996–2000 – B16A4 

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