Kartboy 6MT Shift Linkage Update 2006-2021 STI

This is the Kartboy 6-speed solid shift joint. The factory linkage in the STI 6-speed drivetrain was designed with comfort and vibration isolation in mind, but over time that rubber-isolated joint can introduce excess play and a disconnected feeling during shifts, especially during aggressive driving in a very legal manner or fast gear changes getting safely up to speed to merge on the highway.

The OEM setup uses a rubber-isolated joint that wears over time and absorbs shift input instead of transferring it directly to the transmission. The Kartboy solid shift joint replaces that factory assembly with a precision machined solid connection for a more direct and consistent gear change.

Designed for 2004–2021 Subaru STI 6-speed manual transmission applications, this kit was engineered from a clean-sheet design. The Kartboy solid shift joint features solid stainless machined center cross tubes, press-fit bronze bushings, and precision machined stainless crush tubes for a bind-free design while still allowing proper bolt torque - this is a component built to last.

A great upgrade when installing a short shifter, refreshing worn linkage components, or tightening up the overall feel of an aging STI 6-speed drivetrain.

Install Guide

Features :

• 304 stainless steel w/ bronze insert
• Improved shifts
• Eliminates shifter slop
• Direct replacement of OEM linkage u-joint
  
• Install hardware included
  

Fitment note :A very limited number of 2004-2005 STI had a riveted joint from factory, if so you will need this Subaru part  Please verify before ordering.

Fits all 2006-2021 six-speed (6MT) Subaru WRX STI. See fitment Note for 2004-2005 STI.