SPD Tuning Service Page down for detailed information. Suggestions, comments and questions are always welcome.
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| We stock ACT clutch kits that are made from OEM Daikin parts. 30% stronger than stock. Not much to say except a big improvement! Three "Turbo" transmission options are available with the following gear ratios. The "Ratios" column is the percentage difference in engine speed for each gear change 1-2, 2-3 etc. Even two percent differences in ratios are considered significant. You then must also examine the overall ratio of each gear by multiplying it by the final drive. If the ratios look similar, note that the overall gearing is not. WRX 98 WRX-RA 98 WRX 96
They are seldom available used.When available they are listed here. There is a fourth gear set, but it is so rare that it does not merit listing and the newer WRX-RA 98 is a better box. The rear differential may need changed to use these transmissions depending on what model you have. They are easy to find and are $300-$450. These transmissions take turbo heavy duty clutch pressure plates as shown below. Note that non-RS owners must also purchase a pedal box and hydraulic cylinders. Key Benefits
Pricing
* Either required for use with WRX transmissions. Includes required new flywheel, plate, disk and take out bearing. HD WRX unit good for most applications. STI recommended for 300+HP.
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