IAG Performance Chromoly Transfer Gears for 11:1 Transmission (06+ 6-Speed STI). 2008-subaru-impreza-wrx improves crankcase ventilation and is

improves crankcase ventilation and is compatible with standard ECU calibrations

Dimension: 9

) Multiple Times stiffer and stronger than the stock case Precision machined for a superior surface finish Hard anodized to avoid marking or straining Additional Options: Bore & Hone: Bore & Hone to customer specification $300-$350 Fire-Lock machine the deck surface $200 Case Bolts: ARP Case Bolts Head Studs: IAG / ARP 14mm Head Studs

1:1 for the 2007-2021 STI ONLY

The Street Series AOS maintains OEM PCV system functionality

IAG Performance Chromoly Transfer Gears for 11:1 Transmission (06+ 6-Speed STI). 2008-subaru-impreza-wrx improves crankcase ventilation and isThe 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 launches, the output shaft breaks where the driveshaft yoke connects. IAG's upgraded transfer gear set is capable of handling these immense loads by improving the gear material and redesigning the parts at the