STI 6-Speed Manual Transmission Package

The Subaru STI TY856WB1CA is a complete 6-speed manual transmission package that offers a significant upgrade for Subaru WRX and STI models, particularly for conversion projects and performance-focused builds. This comprehensive kit includes the TY856WB1CA non-DCCD transmission, ensuring simpler installation and reduced electrical complexity while maintaining reliable AWD power distribution and strong drivetrain durability. The package is further enhanced with an A.P. Suretrac front limited-slip differential (LSD) and an R180 rear LSD, which collectively improve cornering traction, power distribution, stability under acceleration, and overall AWD handling performance for street, track, or rally applications. Additionally, the inclusion of Brembo brake calipers provides enhanced stopping power with improved response, better heat dissipation, and stronger clamping force, adding significant value to the package. This used, complete drivetrain package is in good working condition, though it may show minor cosmetic wear. For optimal results, J-Spec Auto Sports recommends inspecting seals and bushings, replacing fluids, confirming final drive ratios, and opting for professional installation. This transmission is compatible with 2002-2007 Subaru WRX and 2003-2008 Subaru Forester models.