Why Install Adjustable Cam Gears?

Factory cam timing is designed to satisfy emissions, fuel economy, and broad drivability requirements. Adjustable cam gears allow you to optimize camshaft timing for your specific engine combination.

Benefits include:

• Improved horsepower
• Increased torque
• Better throttle response
• Optimized power delivery
• Precise tuning after aftermarket camshaft installation

They’re especially valuable when paired with upgraded camshafts, higher compression pistons, turbochargers, or standalone engine management.

Precision Timing Adjustment

The Pro Series gears offer:

• ±10 degrees of camshaft adjustment
• One-degree adjustment increments
• Laser-etched timing marks
• Directional reference markings

This level of precision allows tuners to advance or retard intake and exhaust cam timing to achieve the desired power curve.

CNC-Machined 7075-T6 Billet Aluminum

Each cam gear is CNC-machined from aircraft-grade 7075-T6 billet aluminum, offering an excellent balance of strength and lightweight performance.

Benefits include:

• Exceptional rigidity
• Reduced rotational mass
• Improved durability
• Consistent performance under high RPM

Lightweight Performance

Skunk2 states these gears are approximately 35% lighter than OEM cam gears.

Reducing rotating mass can improve:

• Engine response
• Acceleration
• Rev characteristics
• Overall efficiency

While the horsepower gains from weight reduction alone are modest, every improvement adds up in a performance engine.

Hard-Anodized Teeth

Unlike standard anodized gears, the Pro Series utilizes hard-anodized gear teeth to reduce wear over time.

Advantages include:

• Increased durability
• Better resistance to belt wear
• Improved long-term reliability
• Ideal for high-performance street and race engines

Six-Bolt Locking Design

One of Skunk2’s signature features is its six-bolt locking mechanism.

Compared to traditional multi-piece adjustable gears, this design provides:

• Excellent clamping force
• Reduced chance of timing slip
• Consistent adjustment under extreme engine loads

For engines regularly seeing 8,000+ RPM, maintaining accurate cam timing is critical.

Perfect for Modified H-Series Builds

The Skunk2 Pro Series Cam Gear Set is an excellent addition to builds featuring:

• Stage 1 or Stage 2 camshafts
• High-compression pistons
• Ported cylinder heads
• Turbocharger systems
• Nitrous oxide setups
• Standalone ECU tuning

Combined with dyno tuning, adjustable cam gears can help maximize power throughout the RPM range.

Installation Notes

Installation is straightforward for experienced enthusiasts but should always be followed by professional cam timing verification and engine tuning if adjustments are made.

Proper setup ensures:

• Correct valve timing
• Safe piston-to-valve clearance
• Maximum horsepower
• Reliable operation

Final Verdict

The Skunk2 Racing Pro Series Cam Gear Set (304-05-5220) remains one of the most respected adjustable cam gear upgrades for Honda H22A and F20B VTEC engines. With lightweight 7075-T6 billet aluminum construction, hard-anodized gear teeth, laser-etched timing marks, and a proven six-bolt locking design, these cam gears deliver the precision serious enthusiasts demand.

Whether you’re building a naturally aspirated street car, a turbocharged drag build, or a dedicated road race machine, the ability to accurately fine-tune cam timing makes these gears an excellent investment for extracting every bit of performance from your H-Series engine.