Gear-X Mainshaft
Part Number: AC-1101A

Gear-X Mainshaft
    Some images may be for reference only

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    Will It Fit Your Vehicle?


    The Gear-X mainshaft requires that you use the Gear-X 1st gear and Gear-X 2nd gear.

    This mainshaft will not work with OEM 1st or 2nd gears.

    The first gear ratio is 2.3125 and the second gear ratio is 1.65. It is rated for up to 500 horsepower.

    This is the mainshaft from the Gear-X Drag Kit, Pro Spec I, Pro Spec II and Pro Spec III gear sets.

    The picture is shown with the first and second gears for the countershaft side but they are not included.


    • Part Number: AC-1101A
    • Gear: 1st
    • Gear Ratio: 2.3125 and 1.65
    • Gear Type: Mainshaft
    • Manufacturer: Gear-X

    Vehicle Fitment

    Acura RSX
    2002 Acura RSX Type-S
    2003 Acura RSX Type-S
    2004 Acura RSX Type-S
    2005 Acura RSX Type-S
    2006 Acura RSX Type-S
    2002 Acura RSX Manual
    2003 Acura RSX Manual
    2004 Acura RSX Manual
    2005 Acura RSX Manual
    2006 Acura RSX Manual
    Honda Civic
    2002 Honda Civic Si Hatchback
    2003 Honda Civic Si Hatchback
    2004 Honda Civic Si Hatchback
    2005 Honda Civic Si Hatchback

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