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Whether you’re working with a base WRX platform, or you have a decked-out STI with performance seats to match, both of these rally-inspired, all-wheel-drive sedans are similar on the surface and share a chassis, but upon further inspection, the different equipment and performance components result in significant performance and aesthetic variations between the two. Before deciding on the right performance parts for your WRX or STI, let's compare a few of the major differences and how they impact performance and rideability.
The WRX’s 2.0-liter direct-injection, four-cylinder engine is rated at 268 horsepower and 258 pound-feet of torque. The STI’s 2.5-liter direct-injection, four-cylinder engine is rated at 310 horsepower with 290 pound-feet of torque. The WRX comes with a standard 6-speed manual transmission, with available Lineartronic for automatic shifting. The STI is only available with a close-ratio 6-speed manual transmission with all-wheel drive. Other notable performance characteristics between the two include:
Since both the WRX and STI share similar shaping, there are many versatile body kits and options like the 2015-2017 WRX carbon fiber front lips for a boost in style and aerodynamics. With streamlined skirting for reduced drag, an updated spoiler for improved road traction, or if you’re simply after a customized look that reflects your style, many of our latest upgrades combine the best of function with professional appeal.
For every gear head out there, these remarkable sports sedans were practically built to be upgraded for maximized performance on the track. From elegant 2015+ STI side skirts to new shifters, steering wheel grips, and more, explore our expertly engineered upgrades and you’ll find that there are virtually limitless routes you can take to make the WRX or STI your own.