Teraflex np231 Extreme Short Shaft Kit

This extreme short shaft comes in a kit and is made by Teraflex.  This is what owners of short wheelbase Jeep Wranglers have been wanting for decades.  This kit doesn’t just improve the strength either.  It also increases the length of the driveshaft by an amazing 7 inches when compared to the factory installed version.  That said, it is still an inch and a half shorter when compared to the Atlas II and more than 3 inches shorter when compared to the standard SYE kit. 

This kit comes to you complete with everything in it that you will need to modify your factory installed 231 case.  The readings for the speedometer will be transferred through an electronic sensor and a tone ring.  In order to adjust this calibration, you will need a converter box. 

Please Note

·         This kit is meant to go with only the 231-J transfer case

·         If you have an earlier version of the 231 you will also need to upgrade your mechanical speedometer cable to one that is electric

So what is the drive shaft anyway?  Why do we need them? 

A drive shaft is what is utilized on a 4 wheel drive vehicle as well as on vehicles that have the engine in the front but are rear wheel drive.  In layman’s terms it is used to connect the rear differential to the transmission.  The drive shaft is connected on one end to a pinion on the rear axle.  The other end of the drive shaft is connected up at the transmission. 

On vehicles that have front wheel drive, there is no need for a drive shaft.  Instead, the differential and the transmission are combined to make a single unit that is called the transaxle.

You may also hear the drive shaft being called the propeller shaft.  The drive shaft will typically be a steel tube that is hollow.  This tube should have a yoke welded on to either end of it.  The design is tubular because this enables it to be both lightweight and strong.  Most of the time, you will see vehicles using a drive shaft that is a single piece.  That said, many times trucks might have a drive shaft that is comprised of two pieces.  The purpose of this is to avoid any vibration in the drive line by cutting the shaft. 

Features at a Glance

·         The np231 Extreme Short Shaft Kit that is made by Teraflex will extend the length of your drive shaft by up to 7 inches

·         The np231 Extreme Short Shaft Kit by Teraflex is still shorter than the SYE and the Atlas II

·         The Teraflex np231 Short Shaft Kit is made with pride right here in the USA