Grimmspeed Red Post MAF Hose Kit Subaru STI w/ OEM Sound Tube 2015-2017 | 125014 vendor_Perrin Best paired with upgraded valve

Best paired with upgraded valve springs and retainers

3 piece design

but a little expensive

plus faster cornering speeds and longer tire life during daily use

Grimmspeed Red Post MAF Hose Kit Subaru STI w/ OEM Sound Tube 2015-2017 | 125014 vendor_Perrin Best paired with upgraded valveSome OE parts look passable and others miss the mark. In the case of the factory post MAF hose, the quicker you can get it out of your bay, the better. GrimmSpeed now has you covered with our all new Post MAF Hose Kit which not only looks better, but fixes the performance flaws of its OE counterpart. Our Post MAF Hose construction improves flow with 2 main features: The first is the smooth inner surface, removing the pockets from the OE structural