HKS valve springs are stiffer springs specifically designed for use with HKS camshafts. As valve train dynamics change with the use of high performance cam profiles and greater lift, stiffer valve springs are needed to optimize valve movement. When changing to a high lift cam, stock springs cannot match the increased valve train movement. Therefore HKS engineered valve springs that are precisely matched to the characteristics of HKS camshafts.

A stringent shot-peening and heat treatment process is applied to the HKS valve springs to provide durable and consistent spring rates over time. Applications with high revving engines will benefit from HKS valve springs, as the risk of valve-float and coil-bind is greatly reduced due to their specific design and construction.

Application:

• 1992-1992 MITSUBISHI LANCER EVOLUTION I T 4G63 CD9A Chassis
• 1993-1994 MITSUBISHI LANCER EVOLUTION II T 4G63 CE9A Chassis
• 1995-1995 MITSUBISHI LANCER EVOLUTION III T 4G63 CE9A Chassis
• 1996-1996 MITSUBISHI LANCER EVOLUTION IV T 4G63 CN9A Chassis
• 1997-1998 MITSUBISHI LANCER EVOLUTION V T 4G63 CP9A Chassis
• 1999-2000 MITSUBISHI LANCER EVOLUTION VI T 4G63 CP9A Chassis
• 2001-2002 MITSUBISHI LANCER EVOLUTION VII T 4G63 CT9A Chassis