Our 4.70:1 Xtreme Duty gear kits are now available!

NEW: We've developed a new oil pump system for our Total-Spline inputs (similar to our innovative counter shaft oil pump system) that we'll be discussing/featuring soon. This new system transfers oil to the input pocket bearing, which is known to fail from a lack of oil.

Made from ASE-recognized high quality 8620 alloy, you cannot find a better gear set for the price. Please take a look at how well designed these are and then decide for yourself!

XD Technology explained: http://www.marlincrawler.com/transfer-case/line-ups/single/4701-xd-gear-kit#technology

Product link: http://www.marlincrawler.com/transfer-case/line-ups/single/4701-xd-gear-kit

If upgrading from a stock t/case to dual t/cases is like climbing to the top of Mt Everest, then adding a 4.70:1 gear set to your dual t/cases is like blasting too the moon.

Remember how cool it was to wheel dual cased for the first time? Well going to dual + 4.70 is sooooo much better. You not only get a much, much lower 1st gear ratio, but you get three low range speeds to choose from instead of only two. It's definitely worth it. When I built my truck I installed my Ultimate before my lockers even.

First!

HAHAHAHA

BigMike