Precise cam timing control is a valuable tuning tool on RB-series engines. The Tomei Adjustable Cam Gear for the exhaust side (part number TA302C-NS05A) is designed for the Nissan RB26DETT, RB25DE(T), and RB20DE(T), giving builders the ability to fine-tune exhaust cam timing for improved power delivery and response across the rev range.
Constructed 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 maintaining the strength needed for high-performance use. The hard-anodized surface improves durability, and a clear degree scale allows straightforward, accurate adjustments during setup or tuning. Advancing or retarding the exhaust cam can be used to emphasize low-end torque or high-RPM power depending on the specific engine combination and goals.
This exhaust-side gear is suitable for a wide range of RB builds, from mild street upgrades to higher-output applications. Note that it is not intended for RB20 single-cam engines. At Terra Firma Automotive, we supply this genuine Tomei Adjustable Cam Gear as a practical tuning component for RB26, RB25, and RB20 twin-cam engines. Whether you are optimizing a street setup 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: TA302C-NS05A
- Exhaust 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 exhaust cam timing
- Suitable for street and high-performance applications
- Trusted Japanese valvetrain engineering
- Available from Terra Firma Automotive
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