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Tomei Oversize Valves
Tomei

The Tomei Oversize Valves have been designed from the ground up for increased strength and fatigue resistance while improving air flow and therefore engine performance.

The Tomei Oversize Valves have been designed from the ground up for increased strength and fatigue resistance while improving air flow and therefore engine performance.

 

 

  • 1mm oversized compared to standard
  • Designed for increased flow efficiency on intake and exhaust
  • Thinner exhaust stem design enabling greater air flow and lighter weigh
  • High precision design for optimum sealing capabilities 
  • Surface treatment on intake side for improved wear, fatigue rate with improved heat and corrosion resistance
  • Intake side features SUH35 material for high heat resistance
  • Exhaust side features Iconel 751 material for the highest level of heat resistance
  • Please see the exact size specifications from Tomei under Links below.

Further information available from Tomei under Links below.

 

 

Product Version Vehicle Compatibility Price Order
163400
Nissan - BNR32/BCNR33/BNR34 - RB26DETT - IN+EX Set
Skyline - R32 GTR - BNR32
Skyline - R33 GTR - BCNR33
Skyline - R34 GTR - BNR34
USD $ 587.63
USD $ 702.22
Vehicle Compatibility
Nissan - Skyline - R32 GTR - BNR32
Nissan - Skyline - R33 GTR - BCNR33
Nissan - Skyline - R34 GTR - BNR34
163401
Nissan - PS13/S14/S15 - SR20DET - IN+EX Set
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Silvia - S14 S1
Silvia - S14 S2
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180SX - RPS13 S2 (Black Head)
180SX - RPS13 S1 (Red Head)
180SX - RPS13 S3 (Black Head)
USD $ 391.75
USD $ 468.15
Vehicle Compatibility
Nissan - Silvia - PS13 (Red Top)
Nissan - Silvia - S14 S1
Nissan - Silvia - S14 S2
Nissan - Silvia - S15
Nissan - 180SX - RPS13 S2 (Black Head)
Nissan - 180SX - RPS13 S1 (Red Head)
Nissan - 180SX - RPS13 S3 (Black Head)
163402
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EVO VI - CP9A
EVO VII - CT9A
EVO VIII - CT9A
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EVO IX - CT9A
USD $ 391.75
USD $ 468.15
Vehicle Compatibility
Mitsubishi - EVO V - CP9A
Mitsubishi - EVO VI - CP9A
Mitsubishi - EVO VII - CT9A
Mitsubishi - EVO VIII - CT9A
Mitsubishi - EVO IV - CN9A
Mitsubishi - EVO IX - CT9A
163403
Subaru - Impreza GDB C-G - EJ207/255 - IN+EX Set
Impreza - GDB
USD $ 391.75
USD $ 468.15
Vehicle Compatibility
Subaru - Impreza - GDB
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Nengun Performance
NENGUN CO. LTD
4798-455 Imazu
Nishi-ku, Fukuoka
Japan, 819-0165

Kobutsuho No.
901080810037