We now offer the 1-4 gear set with installation kits for the 2002 - 2007 WRX. Each kit is slightly different, but they all include all the parts that are required for installation. There may be other parts that need to be replaced due to wear, such as bearings and synchros. If you need any other parts, let us know.
All of the install kits include a new speedometer gear, but WRX's with a 3.7 final drive will have a slight speedometer discrepancy.
Professional installation is very strongly recommended. If this gear set goes into any car other than it was originally designed for by Subaru, there is no warranty for strength expressed or implied.
Also, because of the number of issues that can arise due to improper installation, this gear set is not returnable once any of the parts are installed, and we will not warranty any damage to the gear set or any other parts that is the result of improper installation.
The Gear ratios of this transmission are:
- 1st: 3.166
- 2nd: 1.882
- 3rd: 1.296
- 4th: 0.972
- 5th: 0.738
WARNING: Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to https://www.P65Warnings.ca.gov/passenger-vehicle.