IAG 1st - 6th Carbon Synchro Set for 2004 - Early 2006 Subaru STI 6-Speed

IAG’s Carbon Synchro Set is an essential upgrade if you are rebuilding your transmission or looking to get a little more performance out of your 2004-2006 Subaru STI. Worn out synchros, gear grinding and even transmission housing damage can occur from aggressive driving, forceful shifting, overuse, or even normal wear and tear. Our Carbon Synchro Set offers smoother shifting and improved reliability, it is a vital enhancement for your Subaru’s transmission.