Skunk2 Pro XP Valve Spring Set – Honda B-Series VTEC (B16 / B17 / B18)
Skunk2 Pro XP (Extra Pressure) valve springs are designed for high-performance and extreme applications, including turbocharged engines and high-RPM builds. Featuring increased seat pressure and advanced dual spring design, this setup delivers maximum valvetrain stability under demanding conditions.
Developed through extensive motorsport experience, Pro XP valve springs are engineered to support high-lift camshafts and sustained high RPM operation, making them ideal for track, drag and competition builds.
Vehicle Fitment
- Honda B16 VTEC engines
- Honda B17 VTEC engines
- Honda B18 VTEC engines
Performance Overview
- Higher seat pressure for turbo and high-RPM applications
- Prevents valve float under extreme engine speeds
- Supports high-lift camshaft profiles
- Stable valvetrain operation beyond 11,000 rpm
- Designed for motorsport and aggressive builds
Technical Specifications
- Seat Pressure: 93 lbs @ 1.320”
- Open Pressure: 238 lbs @ 0.820”
- Coil Bind: 0.718”
Key Features
- Dual valve spring design with matched inner and outer springs
- Manufactured from high-quality chrome-silicone wire (Japan)
- Heat-treated, shot-peened and chemically polished for durability
- Nitrided for enhanced fatigue resistance
- Engineered for extreme performance and load stability
Important Installation Note
For installation on H22A / F20B engines, Skunk2 spring bases (P/N 312-05-0015) are required.
Why choose Skunk2 Pro XP valve springs
- Designed for turbocharged and high-output engines
- Proven performance in motorsport applications
- Stable operation at extreme RPM levels
- High durability under heavy load conditions
Why buy from Torque Lab
- Official performance parts supplier
- EU-based distribution and support
- Fast and reliable delivery across Europe
- Expert advice for Honda and performance builds
