Why Install Adjustable Cam Gears?

Factory cam timing is designed to balance fuel economy, emissions, and reliability. Performance engines often require custom cam timing to maximize airflow and horsepower.

Adjustable cam gears allow you to:

• Optimize horsepower
• Increase torque
• Improve throttle response
• Shift the powerband
• Fine-tune aftermarket camshaft installations

This makes them an essential component for serious engine builds.

Precision Cam Timing

The Pro Series Cam Gear offers:

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

This precision allows tuners to make repeatable adjustments while dialing in the ideal cam timing on the dyno.

CNC-Machined 7075-T6 Billet Aluminum

Each cam gear is CNC-machined from aerospace-grade 7075-T6 billet aluminum, providing exceptional strength while minimizing rotating mass.

Benefits include:

• High structural rigidity
• Excellent durability
• Lightweight performance
• Improved engine response

Hard-Anodized Gear Teeth

The outer gear features hard-anodized teeth, helping reduce wear from continuous timing belt contact.

Advantages include:

• Longer service life
• Reduced belt wear
• Improved durability
• Reliable operation under high RPM

Six-Bolt Locking System

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

Compared to traditional adjustable cam gears, this design provides:

• Greater clamping force
• Reduced risk of timing slip
• Secure adjustment during racing conditions
• Excellent long-term reliability

It’s a feature that has made Skunk2 cam gears a favorite among drag racers, road racers, and time attack competitors.

Lightweight Design

The Pro Series Cam Gear is approximately 5% lighter than Skunk2’s Tuner Series and significantly lighter than many factory cam gears.

Lower rotating mass contributes to:

• Quicker engine acceleration
• Improved throttle response
• Better engine efficiency

While the weight savings alone won’t produce dramatic horsepower gains, every reduction in rotational inertia helps improve engine responsiveness.

Perfect for Performance Builds

These cam gears pair perfectly with:

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

For best results, adjustable cam gears should always be tuned on a chassis or engine dyno.

Installation Notes

Installation is a direct replacement for factory cam gears, but proper cam timing should always be verified before engine startup.

Professional tuning is highly recommended after making timing adjustments to maximize performance and maintain engine reliability.

Final Verdict

The Skunk2 Pro Series Cam Gear (304-05-5202) continues to be one of the best adjustable cam gears available for Honda B-Series and H23A1 engines. Its lightweight billet aluminum construction, hard-anodized gear teeth, precision laser-etched markings, and proven six-bolt locking design provide the accuracy and reliability needed for everything from street builds to dedicated race cars.

Whether you’re building an Integra Type R, turbo Civic, LS/VTEC project, or H23-powered Prelude, this cam gear gives you the fine-tuning capability needed to unlock your engine’s full potential.