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  • AEM CAS Trigger Disk 50mm OD for Nissan RB25DET + Some RB26 AEM, 30-8761
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    AEM CAS Trigger Disk 50mm OD for Nissan RB25DET + Some RB26 AEM, AEM-30-8761

    $48.32
    AEM-30-8761
    Add to Cart
  • AEM Classic Digital Temperature Gauge Kit, AEM-30-4402
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    AEM Classic Digital Temperature Gauge Kit, AEM-30-4402

    $194.95
    AEM-30-4402
    Add to Cart
  • AEM Digital Boost Gauge, AEM-30-4408
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    AEM Digital Boost Gauge, AEM-30-4408

    $303.95
    AEM-30-4408
    Add to Cart
  • AEM Digital Oil Pressure Gauge, AEM-30-4407
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    AEM Digital Oil Pressure Gauge, AEM-30-4407

    $225.95
    AEM-30-4407
    Add to Cart
  • AEM Digital Volt Gauge, AEM-30-4400
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    AEM Digital Volt Gauge, AEM-30-4400

    $158.95
    AEM-30-4400
    Add to Cart
  • AEM Digital Wideband UEGO Gauge without Sensor, AEM-30-4110NS
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    AEM Digital Wideband UEGO Gauge without Sensor, AEM-30-4110NS

    $98.35
    AEM-30-4110NS
    Add to Cart
  • AEM Ethanol Content Flex Fuel Sensor Kit -6 AN, AEM-30-2201
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    AEM Ethanol Content Flex Fuel Sensor Kit -6 AN, AEM-30-2201

    $301.95
    AEM-30-2201
    Add to Cart
  • AEM High Output Inductive Coil, 30-2852
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    AEM High Output Inductive Coil, AEM-30-2852

    $79.75
    AEM-30-2852
    Add to Cart
  • AEM High Volume Fuel Rail Black Acura B18B1, B18C1 & B18C5, 25-100BK
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    AEM High Volume Fuel Rail Black Acura B18B1, B18C1 & B18C5, AEM-25-100BK

    $146.95
    AEM-25-100BK
    Add to Cart
  • AEM High Volume Fuel Rail, Honda F22A1, F22A4, F22A6, H22A1, H22A4 & H23A1, AEM-25-104BK
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    AEM High Volume Fuel Rail, Honda F22A1, F22A4, F22A6, H22A1, H22A4 & H23A1, AEM-25-104BK

    $179.95
    AEM-25-104BK
    Out of stock
  • AEM Tru-Time Adjustable Cam Gear Black 5-Bolt Mitsubishi, 23-831BK
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    AEM Tru-Time Adjustable Cam Gear Black 5-Bolt Mitsubishi, AEM-23-831BK

    $188.95
    AEM-23-831BK
    Add to Cart
  • AEM Tru-Time Adjustable Cam Gear, AEM-23-802BK
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    AEM Tru-Time Adjustable Cam Gear, AEM-23-802BK

    $124.95
    AEM-23-802BK
    Add to Cart
  • AEM Tru-Time Adjustable Cam Gear. Black. 5-Bolt
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    AEM Tru-Time Adjustable Cam Gear. Black. 5-Bolt, AEM-23-830BK

    $200.95
    AEM-23-830BK
    Add to Cart
  • AEM V2 Water/Methanol HD Controller Kit Internal MAP w 40psi, 30-3306
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    AEM V2 Water/Methanol HD Controller Kit Internal MAP w 40psi, AEM-30-3306

    $193.95
    AEM-30-3306
    Add to Cart
  • AEM V2 Water/Methanol Standard Controller Kit, AEM-30-3304
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    AEM V2 Water/Methanol Standard Controller Kit, AEM-30-3304

    $180.95
    AEM-30-3304
    Add to Cart
  • AEM V3 Water/Methanol Multi-Input Controller Kit, AEM-30-3305
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    AEM V3 Water/Methanol Multi-Input Controller Kit, AEM-30-3305

    $193.95
    AEM-30-3305
    Add to Cart
  • AEM Water/Methanol Injection 200psi Recirculation Pump 3/8 NPT Fittings, 30-3018
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    AEM Water/Methanol Injection 200psi Recirculation Pump 3/8 NPT Fittings, AEM-30-3018

    $206.95
    AEM-30-3018
    Add to Cart
  • AEM Wideband UEGO Replacement O2 SENSOR, 30-2001
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    AEM Wideband UEGO Replacement O2 SENSOR, AEM-30-2001

    $102.95
    AEM-30-2001
    Add to Cart

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About Us

quantum fuel systems blk

QFS was born from a desire for freedom: the freedom to keep your ATV, dirt bike, car, or truck running with dependable, OEM-quality, and affordable fuel systems. We want you back on the road without breaking the bank. Skip the costly dealership—our replacement parts ship directly to you and are easy to install. Enjoy OEM performance with unbeatable US-based support and a lifetime warranty. Are you with us?

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