If you are thinking of upgrading the turbocharger on your WRX but cant decide what fuel injector to go with, look no further! These 565cc JDM STi injectors are just what you need. Ideally matched for use with the IHI VF series of turbochargers, these injectors are perfect for getting you into the 260WHP-300WHP range. They are top-feed type injectors and are a direct fit for any 2002-2005 USDM WRX.Used on the JDM STi, STi Type-RA, and S202, these high-performance injectors will be the perfect upgrade for your WRX. Although the injectors were factory rated at 525cc, Japanese manufacturers use an under-rating system. Independent flow testing has shown and proven that these injectors will flow at 565cc.