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 Jeep Crawl Boxes - Advance Adapters

A crawl box can help you improve the performance of your 4WD Jeep without requiring all sorts of drivetrain changes. You'll get an added low range that you can combine with your existing low range. Use that ultra low gearing for the most extreme and troublesome obstacles on the trail.

 
Please tell us about your vehicle to ensure proper fitment.
  • Advance Adapters - Crawl Boxes - Transfer Case Up Grades & Crawl Boxes - Transmission & Transfer Case - 4WD.com ADV42R023

    $1,899.99

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    Low Range Rubi Crawler

    • Fits 1997 to 2006 TJ Wrangler and Unlimited
    • With 42RLE automatic transmission
    • NP231 transfer case
    • Has 6 pinion planetary assembly featuring a 2.72:1 reduction
    • True bolt in doubler to stock Jeep transfer case or an existing Atlas 2 speed
  • Advance Adapters - Crawl Boxes - Transfer Case Up Grades & Crawl Boxes - Transmission & Transfer Case - 4WD.com ADV42R650

    $53.99

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    JK Twin Stick Shifter Knobs

    • Fits 2007 to 2013 JK Wrangler, Rubicon and Unlimited
    • Black anodized aluminum
    • Recommended for part number ADVRUBI-JKA
  • Advance Adapters - Crawl Boxes - Transfer Case Up Grades & Crawl Boxes - Transmission & Transfer Case - 4WD.com ADV42R800

    $182.99

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    Rubicrawler Computer Module

    • Fits 2007 to 2010 JK Wrangler, Rubicon and Unlimited
    • 2 and 4-door models
    • Fits 2003 to 2006 TJ Wrangler, Rubicon and Unlimited
    • Allows differentials and sway bar control to function
    • Tells vehicle Computer you are in low range
    • Sway bar control only for the 2007 to 2010 JK
  • Advance Adapters - Crawl Boxes - Transfer Case Up Grades & Crawl Boxes - Transmission & Transfer Case - 4WD.com ADVRUBI-JK-UNIV

    $1,778.99

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    Rubicrawler Crawler Box

    • Fits 2007 to 2013 JK Wrangler, Rubicon and Unlimted
    • 2 and 4-door models
    • Automatic transmission 42RLE only
    • Installs between transmission and transfer case
    • Provides additional 2.72 Low Range
    • Includes universal cable shifter
    • Rubicon model requires use of ADV42R800 computer module
    • Does not include shifter knobs
  • Advance Adapters - Crawl Boxes - Transfer Case Up Grades & Crawl Boxes - Transmission & Transfer Case - 4WD.com ADVRUBI-JKA

    $1,970.99

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    Rubicrawler Crawler Box

    • Fits 2007 to 2013 JK Wrangler, Rubicon and Unlimited
    • 2 and 4-door models
    • Automatic transmission
    • Installs between transmission and transfercase
    • Provides additional 2.72 low range
    • Includes twin stick Shifter
    • Requires use of ADV42R800 computer module
    • Does not include shifter knobs - part number ADV42R650
  • Advance Adapters - Crawl Boxes - Transfer Case Up Grades & Crawl Boxes - Transmission & Transfer Case - 4WD.com ADVRUBI-JKAD

    $2,208.99

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    42RLE Rubicrawler Crawler Box

    • Advance Adapters Rubicrawler Crawler Box
    • Installs Between Transmission And Transfer Case
    • Provides Additional 2.72 Low Range
    • Includes Twin Stick Shifter
    • For Use In Jeep Jk Model Only
    • Requires Use Of ADV42R800 Computer Module
    • Does Not Include Shifter Knobs
    • For Use With 42RLE Automatic Transmission
  • Advance Adapters - Crawl Boxes - Transfer Case Up Grades & Crawl Boxes - Transmission & Transfer Case - 4WD.com ADVRUBI-TJ231A

    $1,749.99

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    Rubicrawler Crawler Box

    • Fits 2003 to 2006 TJ Wrangler and Unlimited
    • Automatic transmission 42RLE only
    • Installs between transmission and transfer case
    • Provides additional 2.72 low range
    • Includes twin stick shifter
    • For use in Jeep TJ with 231 transfer case model only
  • Advance Adapters - Crawl Boxes - Transfer Case Up Grades & Crawl Boxes - Transmission & Transfer Case - 4WD.com ADVRUBI-TJ241A

    $1,749.99

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    Rubicrawler Crawler Box

    • Fits 2003 to 2006 TJ Rubicon and Rubicon Unlimited
    • Automatic transmission 42RLE only
    • Installs between transmission and transfer case
    • Provides additional 2.72 low rangeIncludes twin stick shifter
    • For use in Jeep TJ with 241 transfer case model only
    • Rubicon model requires use of ADV42R800 computer module