The Skunk2 Tuner Stage 4 Camshaft is the ultimate performance upgrade for highly modified Honda D15/D16 VTEC engines. Designed for serious naturally aspirated and turbocharged builds, the Stage 4 camshaft delivers maximum top-end power while maintaining exceptional throttle response and drivability across the entire RPM range.

Utilizing Skunk2’s Fast Ramp and AMAX technology, this camshaft provides unmatched valve acceleration and lift profile optimization, resulting in faster airflow, improved midrange torque, and higher peak horsepower. Whether you’re building a dedicated race car or a high-power street setup, the Tuner Stage 4 outperforms all other Skunk2 Tuner cam profiles from idle to redline.

For optimal performance and reliability, Skunk2 recommends upgrading your valvetrain components, including valve springs and retainers, to accommodate the increased lift and duration.

Key Features:

• Highest Performing Camshaft in the Skunk2 Tuner Lineup for D-Series VTEC engines

• Fast Ramp and AMAX Technology for rapid valve movement and increased airflow

• Max Effort Profile ideal for naturally aspirated and turbocharged race applications

• Outperforms All Other Tuner Series Cams from idle to redline

• Enhanced Midrange and Top-End Power with seamless VTEC crossover

• Maintains Excellent Throttle Response and Driveability

• Requires Upgraded Valve Springs and Retainers for reliable high-RPM operation

• CNC Precision Ground from Hardened Billet Cores

Technical Specifications:

• Engine Compatibility: Honda D15 / D16 VTEC

• Intake Lift / Duration: 12.09mm / 254°

• Exhaust Lift / Duration: 11.68mm / 254°

• Valve Clearance: Intake 0.008” / Exhaust 0.010”

• Recommended RPM Range: Up to 9,000 RPM (depending on engine build)

• Profile: Tuner Stage 4 – High RPM, Max Flow

Vehicle Fitment:

Compatible with the following Honda D-Series engines:

• Honda D15B / D15Y

• Honda D16Y / D16Z

Recommended Pairings (Sold Separately):

For maximum valvetrain stability and power:

• Pro Series Cam Gear – 304-05-5170

• Alpha Series Springs and Retainers – 344-05-1350

• Alpha Series Springs – 311-05-1345

• Alpha Series Retainers – 308-05-1600

Included:

• (1) Skunk2 Tuner Stage 4 Camshaft (D-Series VTEC)

• (Installation instructions and specs included)