Ask a Question

Technical Questions

Can't find an answer in our Help Center? Submit a question, and we'll get back to you soon.

Need Business/Order Related Support?

Search our Help Center
Get answers to business and order questions from our experienced Customer Service representatives.

Website Feedback

How are we doing? We really are interested in knowing how you feel about DX Engineering. Contact us with your comments - good, bad, great, so-so, or whatever. We want to hear from you!

Summit Racing Equipment Now Offers the Advance Adapters RubiCrawler Crawl Gearbox for Jeep Wrangler

Twin-stick, 2.72:1 low-range gear reduction in a bolt-on package.

Why It’s Cool: Advance Adapters answers the call of owners looking for even lower gear reduction for their stock 4:1 transfer case. The RubiCrawler’s additional gearing and twin-stick shifting essentially double the amount of gearing options, allowing drivers to find the perfect gear for the terrain. This helps crawlers slowly navigate trails, while keeping RPMs within the 4.0L engine’s powerband.

The RubiCrawler is a six-gear planetary reduction gearbox that bolts right up to the Jeep’s automatic transmission, replacing the tailshaft. It is compatible with the Rubicon’s stock NP241 transfer case, as well as any Atlas transfer case. The gearbox comes with a twin-stick shifter assembly to give drivers control of both front and rear axles.

You can learn more about the Advance Adapters RubiCrawler in this YouTube video: http://www.youtube.com/watch?v=O5fJ4JSqe20

Application: 2003-11 Jeep Wrangler with the 42RLE automatic transmission

Product Link: https://www.summitracing.com/parts/add-rubi-jka/overview/