Transmission Internals

The IAG Chromoly Transfer Gear Set is specifically engineered to strengthen the weak points in the STI 6 speed transmission. When a powerful STI launches aggressively at the track the output shaft progressively twists and weakens. After multiple...

IAG Spec PPG 1st - 4th Straight-Cut Synchro Gear Set for 2004-21 Subaru STI window.SHOGUN_IMAGE_ELEMENTS =...

IAG COMPETITION SERIES TRANSMISSION SHIFT FINGER WITH SPRING PIN FOR 04-21 SUBARU STI ...

The IAG Chromoly Transfer Gear Set is specifically engineered to strengthen the weak points in the STI 6 speed transmission. When a powerful STI launches aggressively at the track the output shaft progressively twists and weakens. After multiple...

IAG 1ST-6TH CARBON SYNCHRO SET FOR 2006-07 STI & 2007-09 LGT SPEC B ...

IAG PERFORMANCE 1ST-6TH CARBON SYNCHRO SET FOR 2004 - EARLY 2006 STI ...

IAG PERFORMANCE 1ST-6TH CARBON SYNCHRO SET FOR 2008 + STI ...

Rebuilding your Subaru 6MT transmission or upgrading your gears? The IAG 6 Speed Synchro package for the 2008-21 STI includes a 1st, 2nd and 3rd gear brass syncronizer set as well as 4th, 5th and 6th gear carbon faced brass baulk rings. The OEM carbon...

IAG Replacement Yoke and Universal Joint Set for Transfer Gears IAG-DRV-1000, IAG-DRV-1010

The RalliSpec Gear Set for the USDM STI 6 Speed converts to the shorter/closer ratio 5th/6th JDM gearing. The gear change reduces the 4th-5th shift bog and allows for a more useable 5th and 6th gear. Best suited for use with USDM MY04-06 gearing. Kit...

The PPG SU-6S4GV2DB-OEM-GA 1st-4th Drag Gear Set to suit the OEM Subaru 6 speed casing is a drag racing specific gear set only. Featuring huge gears, this set is the perfect drivetrain upgrade for manual transmission powered Subaru's heading into the 7...

The PPG SU-6S4GV2DB-GA 1st-4th Drag Gear Set is manufactured to suit the OEM Subaru 6 speed transmission case. Designed as a drag racing specific gear set it features huge gears, which is the perfect drivetrain upgrade for manual transmission powered...

Albins gear sets are manufactured using steel from their on-site steel store stock that is a proprietary steel grade. The Albins gear sets feature a gear profile grinding technique that delivers a perfect tooth profile after heat treatment. This process...

This brand new product is designed to replace the stock selector forks and finger in the 6 speed Subaru gearbox. Targeted for street use customers, this product will also suit drag and circuit work where the OEM Gears are still being used. These can be...