Skunk2 311-05-1360 Alpha Series Dual Valve Spring Set for 1993-01 Honda Prelude

Vehicle Fitment

• 1993-1996 Honda Prelude (BB1), 2.2 L H22A1 DOHC VTEC
• 1997-2001 Honda Prelude (BB6), 2.2 L H22A4 DOHC VTEC

Features

• Dual-spring inner and outer design for improved valvetrain control
• Made from premium chrome-silicone wire for long-term durability
• Prevents valve float at high engine speeds up to 10,000 rpm
• Designed specifically for H-series VTEC engines (H22A/H22A1/H22A4)
• Provides higher seat and open pressures than OEM springs
• Optimized coil-bind height for correct spring travel and clearance
• Ideal for upgraded camshaft or forced-induction engine builds
• Direct drop-in replacement for easy installation

Specifications

• Seat pressure: 50 lbs at 1.400" installed height
• Open pressure: 205 lbs at 0.900" lift
• Coil-bind height: 0.880"
• Material: High-tensile chrome-silicone steel
• Fitment: H22A1 / H22A4 2.2 L DOHC VTEC engines

Included Components

• 1x Complete valve spring set - 16 dual springs (inner and outer)
• Note: Retainers and locks sold separately

Product Description

The Skunk2 311-05-1360 Alpha Series Dual Valve Spring Set is designed for high-revving H-series engines used in the 1993-2001 Honda Prelude. It delivers superior valvetrain stability and control for modified engines running aggressive camshafts or increased boost levels.

Each spring is precision-wound from high-tensile chrome-silicone wire and engineered for consistent pressure and minimal fatigue over long-term use. With optimized seat and open pressures, these springs prevent valve float at extreme rpm, ensuring reliable performance during hard acceleration and high-speed operation.

This direct-fit spring set supports both street and track builds, offering a perfect balance of strength and flexibility. Fitment is confirmed for 1993-2001 Honda Prelude models equipped with H22A1 or H22A4 2.2 L DOHC VTEC engines. 2002+ coverage is unconfirmed at time of listing.