Skunk2 Tuner Series Honda/Acura (H22A/F20B) DOHC VTEC Alpha Valve Spring Set (Dual Springs) retain 5 mm / length :

5 mm  / length : 52mm ( extra spring) Example: You can use the 5 psi or 10 psi spring alone or combine them up together for 15psi

300ZX 90-96 - Aggressive Front & Semi Aggresive Rear

Mitsubishi Galant 90-93 FWD

FIT: Genesis Coupe 10-13 Manual Model

FIT: MAZDA 3 04-09 ALL MODEL

Skunk2 Tuner Series Honda/Acura (H22A/F20B) DOHC VTEC Alpha Valve Spring Set (Dual Springs) retain 5 mm / length :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 designs, develops, and tests its entire valvetrain lineup in house to ensure superior quality