Designed for Mildly Modified R18 Builds

The Skunk2 Stage 2 Camshaft is engineered for vehicles equipped with common bolt-on modifications such as:

• Cold air intake
• Performance header
• High-flow catalytic converter
• Cat-back exhaust
• ECU tuning

Unlike aggressive race-only camshafts, the Stage 2 profile focuses on improving power throughout the RPM range while maintaining excellent street manners.

Proven Horsepower Gains

Skunk2 reports gains of:

• 5-10+ horsepower
• Improved midrange torque
• Stronger top-end pull
• Faster throttle response

Actual gains will vary depending on supporting modifications and tuning.

Vehicles equipped with intake, header, exhaust, and tuning typically experience the largest improvements.

Advanced Camshaft Technology

Skunk2 uses extensive development and testing to create camshaft profiles that maximize airflow while maintaining reliability.

Fast Ramp Technology

Borrowed from Formula One-inspired design concepts, Fast Ramp technology helps:

• Increase cylinder pressure
• Improve torque output
• Enhance throttle response
• Maintain valvetrain longevity

AMAX Profile Technology

AMAX technology increases the usable area under the lift curve.

Benefits include:

• Increased airflow
• Improved volumetric efficiency
• Greater horsepower production
• Better overall engine performance

More airflow means more power without requiring excessive camshaft duration.

Camshaft Specifications

Intake Profile

• Duration: 230°
• Valve Lift: 11.38mm

Exhaust Profile

• Duration: 236°
• Valve Lift: 10.41mm

Valve Clearance

• Intake: .008″
• Exhaust: .010″

These specifications strike an excellent balance between performance and drivability.

Drop-In Installation

One of the biggest advantages of the Skunk2 R18 Stage 2 Camshaft is its drop-in design.

Unlike many aggressive camshaft upgrades, this cam:

• Uses factory valve springs
• Uses factory retainers
• Requires no valvetrain upgrades
• Installs without extensive engine modifications

This helps keep installation costs manageable while still delivering meaningful gains.

Retains Factory VTEC Economy Lobe

Fuel economy remains a major concern for many Civic owners.

Fortunately, Skunk2 retained the factory economy VTEC lobe design.

Benefits include:

• Near-stock cruising efficiency
• Smooth idle quality
• Factory-like drivability
• Minimal MPG loss during normal driving

In other words, you can enjoy additional power without turning your Civic into a fuel-hungry weekend race car.

Tuning Recommended

Although the camshaft can physically be installed without additional modifications, professional tuning is highly recommended.

Using systems such as:

• Hondata FlashPro
• Custom dyno tuning
• ECU calibration

helps maximize:

• Air/fuel ratios
• Ignition timing
• VTEC engagement
• Overall horsepower gains

Without tuning, you’re leaving power on the table.

Why Civic Owners Choose Skunk2

Skunk2 has earned a reputation as one of Honda’s most trusted performance brands.

Their camshafts are known for:

• Consistent quality
• Dyno-proven results
• Long-term durability
• Street-friendly performance
• Excellent engineering

The R18 Stage 2 Camshaft continues that tradition.

Final Verdict

The Skunk2 Stage 2 Camshaft (305-05-0075) is one of the best naturally aspirated upgrades available for the 2006-2011 Honda Civic R18 platform. Offering improved airflow, stronger midrange power, increased top-end performance, and compatibility with factory valvetrain components, it delivers impressive gains without compromising reliability or daily drivability.

For Civic owners seeking a simple yet effective way to unlock additional horsepower, the Skunk2 Stage 2 Cam remains one of the smartest upgrades available for the R18A1 engine.