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Blackbox Gearbox


The Black Box Planetary gearbox is a gear reduction unit that fits between your existing transmission and transfer case. The Black Box can be shifted between 1:1 high range for highway duty and a deep 2.72:1 gear reduction when in low range. The Black Box is designed for the 4x4 enthusiast who is seeking significantly more slow speed control than currently available.

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Blackbox Underdrives

Fitments in the Blackbox Gearbox category:

  • $1,889.00
    $1,889.00
    Sold out
  • $1,889.00
    $1,889.00
    Sold out
  • $2,289.00
    $2,289.00
    Sold out
  • $2,189.00
    $2,189.00
    Sold out
  • $100.00
    $100.00
    Sold out

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