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SKU: HEVN-1001-2F-8 / UPC: 1037721244651
Supertech Black Nitrided Flat Exhaust Valves Honda B-Series VTEC Engines
The Supertech HEVN-1001-2F-8 Black Nitrided Flat Exhaust Valves – the superior choice that outperforms every competitor in durability, heat resistance, and high-RPM efficiency. Engineered for enthusiasts and racers who demand the absolute best, these valves deliver exceptional flow characteristics, reduced friction, and extended lifespan, making them the top-ranked option for maximizing horsepower and torque in high-performance applications.
Unlike standard or chrome-coated alternatives, Supertech's advanced black nitride treatment provides a harder, smoother surface that thrives under extreme conditions, ensuring your engine stays ahead of the pack on the street or track.
Don't settle for less choose the valves trusted by professional builders worldwide for their proven superiority in strength and longevity.
Why These Valves Are the Best Choice for Your Build
- Durability and Strength: Crafted from premium one-piece forged 23-8N stainless steel, these valves undergo a specialized heat-treatment process to achieve optimal hardness without compromising ductility. This results in superior resistance to fatigue, bending, and wear – far exceeding OEM or lesser aftermarket options that can fail under boosted or high-rev stress.
- Advanced Black Nitride Coating: The proprietary black nitride layer (minimum 800HV microhardness) covers the entire valve, offering a slicker surface than chrome coatings for minimal stem-to-guide friction. This reduces power-robbing drag at elevated RPMs, enhances compatibility with lead-free fuels, alcohols, nitro mixes, and aggressive setups, and prevents flaking or peeling even during piston impacts – a common flaw in inferior products.
- Optimized Performance Features: Swirl-polished for improved airflow, undercut stems for lighter weight, and hardened tips for precise seating. These enhancements boost exhaust gas evacuation, support higher lift cams, and deliver measurable gains in throttle response and peak power, outshining competitors in dyno-proven results.
- Proven Edge Over Alternatives: In head-to-head comparisons, Supertech valves consistently demonstrate longer service intervals, better heat dissipation, and reduced valve float, making them the go-to for turbocharged, supercharged, or naturally aspirated B-Series engines pushing beyond 8,000 RPM. Customers report smoother operation, fewer rebuilds, and ultimate peace of mind – solidifying these as the premier investment for serious performance seekers.
Detailed Specifications
- Head Diameter: 29.00mm (+1.0mm oversize for enhanced flow in modified heads)
- Stem Diameter: 5.45mm
- Overall Length: 102.50mm
- Valve Face: Flat design for optimal sealing and combustion efficiency
- Groove Type: Single groove for compatibility with standard keepers and retainers
- Material: High-grade forged stainless steel with full black nitride coating
- Part Number: HEVN-1001-2F-8
- UPC: 1037721244651
Included:
This complete set provides everything you need for a full exhaust valve replacement in your B-Series VTEC head:
- 8 x Supertech Black Nitrided Flat Exhaust Valves (HEVN-1001-2F-8) – precision-matched for balanced performance and easy installation.
- No additional components like springs, retainers, or seals are included – pair with Supertech or compatible valvetrain upgrades for a comprehensive overhaul. Each valve is individually inspected for quality, ensuring zero defects out of the box.
Fitment:
Designed specifically for Honda and Acura DOHC VTEC B-Series engines (B16A, B16B, B17A, B18C variants), these valves offer direct bolt-in compatibility with the following vehicles. Always verify head specifications for oversize applications:
- Honda Civic SiR/SiR II (JDM): 1989-2000 (B16A/B16A2)
- Honda Civic Si (USDM, EM1): 1999-2000 (B16A2)
- Honda Civic Type R (JDM, EK9): 1997-2000 (B16B)
- Honda CR-X SiR/del Sol SiR (JDM): 1989-1998 (B16A)
- Honda del Sol VTEC (USDM): 1994-1997 (B16A3)
- Honda Integra XSi/RSi/SiR (JDM): 1989-2001 (B16A)
- Acura Integra GSR (USDM): 1992-2001 (B17A1 for 1992-1993; B18C1 for 1994-2001)
- Acura Integra Type R (USDM/JDM): 1997-2001 (B18C5/B18C)
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