Controlling the valves accurately at elevated engine speeds is essential for any performance RB26DETT. The Tomei Racing Valve Springs Type-A (part number TA304A-NS05A) are engineered to support higher-lift camshafts and increased RPM while maintaining stable valve motion and reducing the risk of float or bounce.
Rated for compatible lift up to approximately 10.85 mm, these springs deliver a set load of 24.0 kgf and a lift load of 77.2 kgf. They are manufactured from oil-tempered chrome-silicon alloy steel (SWOSC-V) and receive a nitride surface treatment that significantly raises the fatigue limit. This combination improves durability under the repeated high-stress cycles of performance driving and allows the springs to absorb shock loads more effectively than stock units. The white color identification helps distinguish them during assembly.
Type-A springs are a popular choice for RB26 builds running mild to moderately aggressive cam profiles, providing the additional control needed for reliable operation near the 8,500 rpm range. At Terra Firma Automotive, we supply this genuine Tomei Type-A Valve Spring set for Skyline GT-R R32, R33, and R34 owners seeking a proven high-performance spring solution. Whether you are pairing them with Tomei camshafts or another aftermarket profile within the supported lift range, these springs offer the strength and consistency expected from Japanese race-engineered components. Choose Terra Firma Automotive for authentic Tomei valvetrain parts that support precise high-RPM control.
- Genuine Tomei Racing Valve Springs Type-A
- Part Number: TA304A-NS05A
- Application: Nissan RB26DETT
- Fitment: Skyline GT-R R32 / R33 / R34 (and Stagea 260RS)
- Compatible lift: up to approximately 10.85 mm
- Set load: 24.0 kgf ±7%
- Lift load: 77.2 kgf ±7%
- Material: SWOSC-V oil-tempered chrome-silicon alloy
- Surface treatment: Nitrided
- Color identification: White
- Free length: 44.0 mm
- Set length: 37.7 mm
- Reference rev capability: approximately 8,500 rpm
- Reduces valve float and bounce at higher RPM
- Improved fatigue resistance versus stock springs
- Suitable for mild to moderate high-lift camshafts
- Available from Terra Firma Automotive
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