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In Stock and Ready To SHIP! Assembled by Rallispec, the STi standard ratio gears feature a 5th gear that is identical to the stock WRX for those wishing to maintain the same highway performance. However, these gears provide improved reliability of the 5MT through similar hardening and strengthening features as found on the STi RA set listed above. Now R.E.M. treated for increased strength. This Kit Includes: - Main Shaft - 1st Gear Driven - 2nd Gear Driven - 3rd/4th Gear Set - 5th Gear Set - Main Shaft Lock Nut - Output Shaft Lock Nut - Pinion Shaft Lock Nut - Transfer Case Gasket - Front Main Shaft Oil Seal - Custom Steel 3.9 Speedometer Gear - Installation Kit for Correct year Car Professional installation is strongly recommended, and you MUST order the correct installation kit for your car. If you are not sure what year transmission you have, you need to order the 02 Installation kit. JDM STI 1st-3.166 2nd-1.882 3rd-1.296 4th-0.972 5th-0.738 JDM STI-RA 1st - 3.083 2nd - 2.062 3rd - 1.545 4th - 1.151 5th - 0.825 USDM WRX 1st - 3.454 2nd - 1.947 3rd - 1.366 4th - 0.972 5th - 0.738  If you do not have Flatirons Tuning build your transmission for you, we do not offer any warranty on the parts due to the number of issues that can occur due to improper installation. For more information about the STI Version 6 Standard Ratio Gear Set, or other Subaru Gear Sets, please click here. For 02 WRX
For 03 WRX
For 04 WRX
For 05-07 WRX
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