I Build Race Cars FLX02 Flex Fuel Upgrade Kit Green Speed Subaru STI 2008-2021 | IBR-FLX02-UPG OpenBox Billet aluminum construction

Billet aluminum construction

PERRIN Tow Hooks will give your ride a sporty look without breaking the bank

Instead of producing a manifold with a significantly oversized plenum and excessively short runners that would sacrifice mid-range power

Once installed

BC valve springs are wound from only the highest grade

I Build Race Cars FLX02 Flex Fuel Upgrade Kit Green Speed Subaru STI 2008-2021 | IBR-FLX02-UPG OpenBox Billet aluminum constructionFitment Information: 2008 2021 Subaru STI Please note: This kit is specifically designed to work the latest Cobb Green Speed tuning packages. Please work with your tuner to understand what options they have to tune your car as compatibility may vary from tuner to tuner. If you are looking to replace older flex fuel kits without the need to retune, take a look at iBR's FLX01 Kit or FLX01 Upgrade Kit. Features: The I Build Race Cars FLX02 Flex Fuel