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Subaru Impreza/WRX/STi 1st/2nd Gen, Saab 9-2X Driveshaft Center Support Bearing Carrier Upgrade (SUB03A0)

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SUB03A0

Subaru Impreza/WRX/STi 1st/2nd Gen, Saab 9-2X Driveshaft Center Support Bearing Carrier Upgrade (SUB03A0)

Please add model type, build year, gearbox type and RWD or AWD to the order comment

THE PROBLEM

The stock center support bearing carrier holds the driveshaft in place with rubber so thin about 20 lbs of force moves it from center to the end of its travel. 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 over time and ruin the driveshaft alignment, and creates slop in the driveline during shifts and throttle application. Over time the OEM bushing sags and becomes brittle, eventually dry rotting and cracking. Even on the best-kept cars, the stock bushing can start to from cracks in as little as 5-10 years. When the bushing lets go, it can lead to excessive vibration and clunking and put more stress on the bearing. To make matters worse, the stock carrier is molded onto the center support bearing, so it???s not easy to replace without special tools.

The videos below were recorded on a 2005 WRX STi. The bearing on this vehicle has sagged all the way to the bottom, resting on the carrier frame. The shaft is not well-supported by the soft OEM carrier, so it???s allowed to travel off-center during rapid loading and unloading.

THE SOLUTION

This upgraded unit keeps the driveshaft firmly in place at all times, and its solid construction ensures it will never wear out. The thick bushings ensure the driveshaft cannot move from center, maintaining driveshaft alignment at all times.

THE BUSHINGS

Two options are available for the bushings, both of which are many times over better than the stock bushing. We???ve paid close attention to the NVH levels associated with this upgrade. After extensive design iterations, we???ve come up with custom isolator bushings that separate the carrier from the body of the vehicle and mounting hardware. These carriers substantially reduce NVH levels.

The street bushings absorb most of the NVH from the drivetrain. Some light NVH is possible at some speeds in the form of a soft hum. With a modified exhaust or windows down you???ll probably never hear it.

The track bushings are for those who want no-compromise drivetrain performance. These may create a substantial amount of cabin noise. Not sure which is for you? They???re interchangeable so you can try them both.

INSTALLATION

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. Below are example installation videos on 2008 and 2022 models. A model-specific installation video will be released before preorders are shipped. The exact steps to access the carrier will vary slightly by model, but the removal and installation of the new carrier are the same. The basic steps are:

Remove any braces or splash shields preventing exhaust and heat shield removal

Remove or lower exhaust in area of center support bearing if needed for access

Remove heat shielding covering center support bearing

Cut off OEM carrier and remove rubber support material with razorblade, leaving base layer of rubber intact on the bearing

Clamp new carrier around OEM bearing

FITMENT

1st gen Impreza (GM/GC/GF) (1993-1999) (all including Impreza Outback)

2nd gen Impreza models (GD/GG) (2000-2007) (all including WRX, WRX STi, and Outback Sport)

1st gen Legacy (BC/BF/BJ) (1989-1994)

Saab 9-2X

Part Numbers

Full Assemblies

Street - SUB03A0-S

Track - SUB03A0-T

Both - SUB03A0-B

Spare Bushing Packs

Street - BSH09A0

Track - BSH09A1

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