The Split Housing Driveshaft Carrier

The stock center support bearing carrier holds the driveshaft in place with a layer of thin rubber. While that’s great for making sure no NVH makes it to the cabin, it doesn’t keep the bearing centered well under load, allows the bearing to sag and ruin driveshaft alignment over time, and creates slop in the driveline during shifts and throttle application.

As it ages the OEM bushing becomes brittle, eventually dry rotting and cracking.

Our upgraded driveshaft carriers keep the driveshaft firmly in place at all times. The more solid bushings ensure the bearing cannot move from center, maintaining torque delivery and driveshaft alignment at all times, resulting in more direct driveline response under all conditions.

Benefits as described by our customers include:

• Smoother low-speed on/off throttle behavior off-road

• More direct throttle response

• Firmer, more direct shifts

• More instantaneous launches

• Reduction in vibration due to driveshaft misalignment and/or rubber deterioration
  

The Optional Spacer Kit

As you lift the rear end, the driveshaft angles are affected. Trucks with bigger lifts will start to put a large angle in the center CV joint, which accelerates wear, and in the case of a worn joint, results in vibration at high speeds or under heavy loads.

• The spacer kit comes with a variety of nesting spacers that can be stacked to get just the right height for your application.

• We also offer an adapter kit that allows installation of our carrier with an existing aftermarket spacer kit.

The video below shows a comparison of how much the OEM carrier gives under load and the improvement with the JXB carrier.

Installation doesn’t require removal of the driveshaft. The 2-part design clamps around the OEM bearing. The old carrier must be removed, so a cutting tool is required.

The basic steps are:

• Cut off OEM carrier and trim rubber support material with razorblade

• Clamp new carrier around OEM bearing

• JT Gladiator (2020+)

Street and Track refer to the durometer (stiffness) of the bushings. Track are roughly twice the durometer of the street bushings. Both track and street are many times stiffer than stock and will hold up to whatever abuse are thrown at them, but the street bushings are better at soaking up drivetrain noise and vibration. Usually both street and track are completely silent and vibration-free, but in cases where there is an underlying drivetrain issue causing the driveshaft to vibrate badly, the track bushings may not be able to soak it all up, where the street bushings can.

We generally recommend street bushings for any car that's not purpose-built for track or overland use, since the street bushings have a much lower chance of transmitting drivetrain NVH to the cabin at high speeds or under heavy throttle loads.

If you’re not sure which to go with, the “Give me Both!” option will give you a full set of each of the street and track bushings. You can use all street, all track, or even mix and match them to find the perfect balance of performance and NVH-absorption.