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Cylinder Heads

  • AKRA CNC Ported Race Head Bare or Assembled

    TRJ Karting AKRA CNC Ported Cylinder heads are among the best in the country and were developed after months flow work, dyno testing and redesigns. These heads are CNC machined for consistent quality head to head. they are completely Blue Printed and...

    $119.99
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  • NKA Stealth Race Head Bare or Assembled

    NKA Stealth Race Head Bare or Assembled

    These "STEALTH" heads are among the best in the country and are the secret behind the power of many of the top clones in the nation. These heads are completely Blue Printed and built to the max of the rule book, Valve Seats, Valve Pockets are all...

    $119.99
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  • JT-163 Race Ready Assembled Cylinder Head

    163 Race Ready Cylinder Head The 163 casting compare closer to the 151 head than anything else, in relation to flow numbers. The 163 offers slightly more airflow in the .100 to .150 range, same at .200 and slightly less at .250. This is quickly...

    $95.00
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  • JT-181 Race Ready Assembled Cylinder Head

    181 Race Ready Cylinder Head The 181 casting compares close to the 151 but on the plus side, in relation to flow numbers. The 181 offers slightly more airflow in the .200 to .250 range, same at .100 and slightly less at .050. This is a popular head for...

    $95.00
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  • TRJ Performance AKRA Ultimate Power Package

    TRJ Performance AKRA Power Package includes the following: 2017 AKRA ported or Stealth ported Assembled Cylinder Head (based on track rules) AKRA Ultimate Cam and Crank combo New HD Connecting Rod, Lightweight Piston & Wrist Pin Dyno Cams Low...

    $449.95
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  • TRJ Performance NKA Ultimate Power Package

    TRJ Performance NKA Power Package includes the following: 2017 NKA Stealth ported Assembled Cylinder Head (based on track rules) NKA Ultimate Cam and Crank combo New HD Connecting Rod, Lightweight Piston & Wrist Pin Dyno Cams Low Tension Oil Ring...

    $449.95
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  • JT-136 Cylinder Head

    The JT-136 Cylinder Head is the prefered Cylinder Head for plate motors. This head comes bare. Assembled heads include a competition Valve Job, TRJ Karting PreSet Valve Springs with height set, Shorter Lightweight Valves, Seals, and Retainers., (please...

    $55.00
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  • 181 Race Cylinder Head Bare or Assembled

    181 Race Ready Cylinder Head The 181 casting compares close to the 151 but on the plus side, in relation to flow numbers. The 181 offers slightly more airflow in the .200 to .250 range, same at .100 and slightly less at .050. This is a popular head for...

    $28.00
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  • 163 Race Cylinder Head Bare or Assembled

    163 casting. The 163 casting compare closer to the 151 head than anything else, in relation to flow numbers. The 163 offers slightly more airflow in the .100 to .150 range, same at .200 and slightly less at .250. This is quickly becoming a popular head...

    $22.00
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  • Clone Exhaust Valve Seat

    TRJ Performance had these seats specially made to increase the performance over stock clone valve seats. The seat material is softer than stock which helps control valve bounce, creating a better seal when the valve closes. Available in singles and bulk...

    $13.00
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  • Clone Intake and Exhaust Valve Seat Pair

    TRJ Performance had these seats specially made to increase the performance over stock clone valve seats. The seat material is softer than stock which helps control valve bounce, creating a better seal when the valve closes. 1 each of Intake and Exhaust...

    $24.00
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  • Clone Intake Valve Seat

    TRJ Performance had these seats specially made to increase the performance over stock clone valve seats. The seat material is softer than stock which helps control valve bounce, creating a better seal when the valve closes. Available in singles and bulk...

    $13.00
    Add to Cart