231 Extreme Short Shaft Kit by TeraFlex

The Extreme Short Shaft kit is what short wheelbase Wrangler owners have been dreaming of for decades. The Extreme kit not only improves on strength, but also increases driveshaft lengths by up to 7" over a stock application. It is over 3" shorter than a standard SYE kit, and 1-1/2" shorter than an ATLAS II. The Extreme SS kit comes with all necessary components to modify the stock 231 case. Speedometer readings are transferred through a tone ring and electronic sensor. To adjust the calibration a converter box is necessary to make any calibration adjustments. Note: Fits 231-J transfer cases only. Note: Earlier 231 applications with mechanical speedometer cable require updating to an electronic speedometer