RaceQuip Fire Retardant Underwear Top - Black - Medium - 421993 BMW 335 Compared to the stock cast

Compared to the stock cast unit on the EJ STI and plastic construction on both the 08-14 and 15-21 WRX platforms

This upgrade requires no modification to the car for an easy installation with the included custom silicone adapters

direct-fit

Mishimoto front-mount intercoolers are precision TIG welded

RaceQuip Fire Retardant Underwear Top - Black - Medium - 421993 BMW 335 Compared to the stock cast>> CLICK HERE FOR SIZING CHART << RaceQuip SFI 3. 3 rated long underwear tops are knit from a blend of aramid and FRC fabrics to achieve a comfortable fire retardant garment. The properties of this unique fabric structure create a lightweight fabric that performs like Nomex yet is much more cost effective. The Fire Retardant Cotton (FRC) component of the fabric promotes a soft and supple lightweight feel. Since it's hypoallergenic, it won't irritate