Axles
Thread Starter
JK Enthusiast
Joined: Jun 2009
Posts: 260
Likes: 0
From: Long Beach, CA
Yes, it does. It is between a locker and open differential. If you get a rear wheel off the ground it will more or less act like an open differential. For general both wheels on the ground it will provide power to both wheels pretty well, not 100% like a locker...but not bad by any means.
JK Freak
Joined: Nov 2008
Posts: 686
Likes: 2
From: San Diego, CA
Some X's and Sahara's come with a rear limited-slip differential. This is a pseudo-locker that senses a loss of traction and activates to compensate.
My understanding is that all JK's also come with what's called a "brake-lock differential". So far, I've had no problems with traction in my unlocked X. See below for more on the BLD...
"Available for the first time with Jeep Wrangler models are Brake Lock Differentials (BLDs), which are incorporated into the Electronic Stability Program (ESP) algorithm. BLDs apply braking force to an axle's spinning wheel in order to provide an equal amount of torque to each wheel and deliver greater traction for rock-crawling over severe off-road terrain. A separate set of BLD calibrations is designed for off-road operation and automatically activates when driving in 4 Low."
My understanding is that all JK's also come with what's called a "brake-lock differential". So far, I've had no problems with traction in my unlocked X. See below for more on the BLD...
"Available for the first time with Jeep Wrangler models are Brake Lock Differentials (BLDs), which are incorporated into the Electronic Stability Program (ESP) algorithm. BLDs apply braking force to an axle's spinning wheel in order to provide an equal amount of torque to each wheel and deliver greater traction for rock-crawling over severe off-road terrain. A separate set of BLD calibrations is designed for off-road operation and automatically activates when driving in 4 Low."