Skunk2 Racing Alpha Series Valve Spring Set (311-05-1360) 1851 elevated performance under challenging braking

elevated performance under challenging braking conditions and street car friendly characteristics

the cross-sectional area of the air box filter was increased by a massive 41%

razor sharp handling and spiritual connection to the vehicle that elevates the driving experience of the extraordinary 991

Requires AutoMeter 3223 nylon tubing kit (10 ft

Release Bearing - Pilot

Skunk2 Racing Alpha Series Valve Spring Set (311-05-1360) 1851 elevated performance under challenging brakingSeat Pressure: 50 lbs at 1. 400in. Open Pressure: 205 lbs at 0. 900in. Coil Bind: . 880in.. Manufactured exclusively from super clean, chrome silicone wire milled in Japan, Skunk2's Alpha Valve Springs for Honda's D series VTEC engines are a product of the company's years of racing and engine building experiences. Alpha Valve Springs are able to prevent valve float and maintain valvetrain stability at engine speeds in excess of 10,000 rpm. Skunk2