STM Small Battery Kit for 02-07 WRX/STi COP Fluidyne's testing showed the stock

Fluidyne's testing showed the stock temps rise to 145-150°F during dyno runs and 1/4 mile passes

2005-2021 Subaru STi

STM-EVOX-BATK1-GEN16-BR

The stock valve will require a custom hose for recirculation

Mitsubishi Part Number Diagram Number Old/Alternate Number 4605A585 52150 4605A737

STM Small Battery Kit for 02-07 WRX/STi COP Fluidyne's testing showed the stockThe STM 680 small battery kit for 02 07 WRX STi allows you to install a smaller, lighter battery to save 24 pounds while lowering the center of gravity. This kit fits cleanly in the stock location and installs in minutes with the new tie down hardware. Includes a non slip pad to keep the battery snug and reduce shock while driving. The battery tie down kit is available with or without the Odyssey PC680. Battery purchase will include a set of new