Accurate intake cam timing is a key tuning parameter on RB-series engines. The Tomei Adjustable Cam Gear for the intake side (part number TA302B-NS05A) is designed for the Nissan RB26DETT, RB25DE(T), and RB20DE(T), giving builders the ability to fine-tune intake cam phasing for improved response, mid-range torque, or high-RPM power depending on the specific combination.
Built primarily from lightweight yet strong Duralumin, with billet aluminum used for the pulley and inner plate, this sliding-type adjustable gear reduces rotational mass compared with the heavier factory steel unit while retaining the durability required for performance use. The hard-anodized finish improves surface toughness, and a clear degree scale makes precise adjustments straightforward during setup or dyno tuning. Advancing or retarding the intake cam can be used to optimize cylinder filling and power characteristics across the rev range.
This intake-side gear is suitable for a wide variety of RB builds, from refined street setups to higher-output applications. It is not intended for RB20 single-cam engines. At Terra Firma Automotive, we supply this genuine Tomei Adjustable Cam Gear as a practical and well-engineered tuning component for RB26, RB25, and RB20 twin-cam engines. Whether you are optimizing a daily-driven package or refining a performance build, this adjustable gear provides the control and construction quality expected from Tomei. Choose Terra Firma Automotive for authentic Japanese valvetrain components that support precise RB-series tuning.
- Genuine Tomei Adjustable Cam Gear
- Part Number: TA302B-NS05A
- Intake side only
- Compatible with RB26DETT, RB25DE(T), and RB20DE(T)
- Not for RB20 single-cam engines
- Sliding-type adjustable design
- Duralumin construction for strength and reduced weight
- Billet aluminum pulley and inner plate
- Approximate weight: 337 grams
- Lighter than factory steel gear
- Hard-anodized surface for durability
- Clear degree scale for accurate timing adjustment
- Allows fine-tuning of intake cam timing
- Suitable for street and high-performance applications
- Trusted Japanese valvetrain engineering
- Available from Terra Firma Automotive
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