This reduction unit replaces the stock 42RLE tailhousing with a 6 gear planetary reduction box featuring a 2.72 low range. This is a true, bolt-in doubler that couples to the stock Jeep transfer case or an existing Atlas transfer case.
Features: The RubiCrawler increases your available gear ratios. This allows you to choose the appropriate gear, depending on the terrain in which you're wheeling. Proper gear choice will allow you more control of the vehicle. Ultimately, this contributes to a fun, and safe, offroading experience, even in extreme environments.
TJ Wrangler - Stock Transfer Case: This is the option for customers installing the Rubicrawler in conjunction with the stock NP231 or NP241OR transfer cases that came with the vehicle from the factory.
JK Wrangler - With Heavy Duty Transfer Case Shift Kit: This is an option for customers installing the Rubicrawler in the Jeep JK Wrangler. The Shifter in this kit upgrades your transfer case shift cable along with the cable connections to heavy duty heim joint style connection.
Advance Adapters got its start in Downey, California in 1971 with a single adapter mating a Muncie car 4-speed to a Jeep Dana 18 transfer case. Eventually headers, overdrives, motor mounts and linkage brackets were added to the offerings to complement their core adapter components. When interest in rock crawling spiked in the mid-1990s, Advance Adapters offered low ratio transmission swaps then switched gears into the ultra-low gear transfer case arena. Today, the company is based in Paso Robles, California and their engine and transmission conversions for Jeeps are in kit form and sold as individual components. Shop Advance Adapters Now