High Torque Bearing Kit
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High Torque Bearing Kit

High Torque Bearing Kit

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From $5.04

Original: $14.39

-65%
High Torque Bearing Kit—

$14.39

$5.04

The Story

The 34091-85 inner bearing race has been used on Big Twins since 1985. The inner primary bearing rides on this race. By design, this race press-fits onto the transmission mainshaft. This system works fine for stock engines. 100 HP+ engines will make this race walk on the mainshaft. If it walks inboard, it will damage the maindrive gear seal and cause a transmission oil leak. If it walks outboard, it will cause a primary oil leak. Our high torque bearing kit eliminates this condition. Kit includes a precision honed bearing and seal.


 PN 189-56

This part is now included in DD6, OD6, GrudgeBox, and DD7 kits.


Fitment
  • 1985-2007 Big Twin Models*

* Designed for closed wet primary applications

 

This part is now included in DD6, OD6, GrudgeBox, and DD7 kits.

Parts Numbers
189-56-A High Torque Bearing Kit, 1985-2007 Big Twin 
Features

Benefits

Eliminates lateral walking of the mainshaft race, found especially found in high horsepower setups.

This part is now included in DD6, OD6, GrudgeBox, and DD7 kits.

Detail

Installation Instructions
Please refer to your Stock Service Manual.

Description

The 34091-85 inner bearing race has been used on Big Twins since 1985. The inner primary bearing rides on this race. By design, this race press-fits onto the transmission mainshaft. This system works fine for stock engines. 100 HP+ engines will make this race walk on the mainshaft. If it walks inboard, it will damage the maindrive gear seal and cause a transmission oil leak. If it walks outboard, it will cause a primary oil leak. Our high torque bearing kit eliminates this condition. Kit includes a precision honed bearing and seal.


 PN 189-56

This part is now included in DD6, OD6, GrudgeBox, and DD7 kits.


Fitment
  • 1985-2007 Big Twin Models*

* Designed for closed wet primary applications

 

This part is now included in DD6, OD6, GrudgeBox, and DD7 kits.

Parts Numbers
189-56-A High Torque Bearing Kit, 1985-2007 Big Twin 
Features

Benefits

Eliminates lateral walking of the mainshaft race, found especially found in high horsepower setups.

This part is now included in DD6, OD6, GrudgeBox, and DD7 kits.

Detail

Installation Instructions
Please refer to your Stock Service Manual.