Subaru STi 6 Speed Transmission Specialists! Building, Testing, and PROVING since 2010!

We are the world’s leader for Subaru Transmission performance upgrades, diagnostics, and repair. Below you can find the parts to keep your transmission in tip top shape, as well as repair parts for the DIY.

Looking to send your transmission to Kozmic for a build? CLICK HERE to complete the contact form to start the process!

STi 6 Speed Parts:

Motul Motyl Gear 75-90
Price$28.96
IAG 6 Speed Synchro Set 1st - 3rd Brass / 4th - 6th Carbon Faced - Brass for 08-
Price$399.99
IAG Pitch Stop Mount For 2002-22 Subaru WRX, 04-21 STI, 04-11 FXT, 05-09 LGT
Price$109.99
IAG Street Series 6 Speed Transmission Mount for 2004-21 Subaru STI, 07-09 LGT S
Price$269.00
IAG Replacement Yoke and Universal Joint Set for Transfer Gears
Price$149.99
IAG Spec PPG 1st - 4th Straight-Cut Synchro Gear Set for 2004-21 Subaru STI
Price$5,999.99
IAG Performance Chromoly Transfer Gears
Price$1,329.99