Tomei Camshaft Set, Poncam RB25DE(T) NVCS 256-8.50 R33 (Late) TA301B-NS06B

Camshaft selection plays a key role in how an RB25DE(T) delivers mid-range response and overall drivability. The Tomei Poncam Camshaft Set (part number TA301B-NS06B) is a matched intake and exhaust pair designed specifically for late-production R33 RB25DE(T) engines equipped with NVCS, covering vehicles manufactured from approximately September 1997 to September 1998.

This Poncam specification features a 256° duration and 8.50 mm lift on both intake and exhaust sides. As part of Tomei’s milder Poncam range, these shafts are intended to improve airflow and throttle response while remaining suitable for street-driven and mildly modified engines. The profile works with the NVCS system on late R33 RB25 engines and provides a practical step up from stock cams without the more aggressive characteristics of higher-lift Procam options.

These 256-8.50 Poncam shafts are a well-matched upgrade for late R33 GTS25T or similar RB25DE(T) builds seeking better response and usable power gains. Proper installation and professional tuning are recommended to realize the benefits and maintain reliability. At Terra Firma Automotive, we supply this genuine Tomei Poncam Camshaft Set as a capable performance option for late R33 RB25 owners. Choose Terra Firma Automotive for authentic Japanese camshafts that support responsive, well-rounded RB25DE(T) engines.

 

• Genuine Tomei Poncam Camshaft Set
• Part Number: TA301B-NS06B
• Application: Late R33 RB25DE(T) with NVCS
• Production range: approximately 09.1997 – 09.1998
• Intake duration: 256°
• Exhaust duration: 256°
• Intake lift: 8.50 mm
• Exhaust lift: 8.50 mm
• Matched intake and exhaust set
• Milder Poncam profile for street and mild performance use
• Compatible with late R33 NVCS system
• Improves mid-range response and airflow potential
• Practical upgrade over stock camshafts
• Requires proper installation and tuning
• Trusted Japanese camshaft engineering
• Available from Terra Firma Automotive