HKS 278° Exhaust Camshaft Step 2 - Mitsubishi 4G63 CT9A (Evolution 7-9)
The HKS 278° Exhaust Camshaft Step 2 is designed for the Mitsubishi Lancer Evolution 7, 8, and 9 equipped with the 4G63 engine (CT9A). Engineered for high-performance engine builds, it is optimized to improve exhaust flow, increase top-end horsepower, and maximize performance at higher RPM. With a 278° duration and 11.0 mm valve lift, this camshaft enhances cylinder scavenging, creating the ideal conditions for increased power and improved turbocharger efficiency.
Each HKS camshaft is CAD-designed to optimize both torque and horsepower across the widest possible RPM range. Unlike reground factory camshafts, HKS camshafts are precision-machined from brand-new billet cores manufactured from a high-nickel iron alloy. This construction provides exceptional strength, precision, and durability, meeting or exceeding the quality of the original equipment components they replace.
The camshaft is a direct replacement for the factory exhaust camshaft and is compatible with the OEM valvetrain. However, due to its more aggressive cam profile, HKS high-performance valve springs and retainers are required to ensure proper operation and long-term reliability.
Features
- Fits Mitsubishi Lancer Evolution 7-9 (CT9A) with the 4G63 engine.
- Step 2 exhaust camshaft.
- 278° duration.
- 11.0 mm valve lift.
- CAD-designed profile optimized for increased horsepower and torque.
- Precision-machined from a new billet core made of high-nickel iron alloy.
- Direct replacement for the factory exhaust camshaft.
- Requires HKS high-performance valve springs and retainers.
- Designed for high-performance street and racing engine applications.
