STM Small Battery Kit for Evo 7/8/9



Vehicle Fitment:
2001-2006 Mitsubishi Lancer Evolution VII VIII IX
• Fits all JDM & USDM models
• Does NOT fit with the factory intake airbox

Stock Evo 8 Battery Weight: 37 pounds
STM Battery Kit with Odyssey PC680 and Terminals 15.85 pounds / 21.15 lighter than stock
STM Battery Kit with Genesis 16EP and Terminals: 15.10 pounds /21.90 lighter than stock

STM Battery Tray: Battery is not included


The STM lightweight small battery kit for Evo 7/8/9 allows you to drop 21 pounds vs the factory battery, lightens up the front of the car and clears room in the engine bay for new intercooler piping. The STM tray is machined billet aluminum with stainless hardware and mounts to existing points in the chassis for an easy install.

The battery tray is available without a battery or with your choice of the Odyssey PC680 or the black Genesis 16EP and the batteries will include a set of new terminals. Please note we cannot ship batteries outside the continental USA.

Vehicle Fitment:
2001-2006 Mitsubishi Lancer Evolution VII VIII IX
• Fits all JDM & USDM models
• Does NOT fit with the factory intake airbox

Battery Tray Features:
• Billet Aluminum Base
• Tig-Welded Aluminum
• CNC Engraved
• Stainless Hardware
• Made in the USA
• Uses existing bolt holes for mounting
• Lightens the front of the car and transfers weight to the back wheels
• Clears room in the engine bay

Install Notes:
Small batteries can fail if the posts are not torqued to 50 inch pounds. Additional torque will cause damage to your battery, so please be careful when installing.

Recommended Battery Charger:
CTEK MXS Battery Charger (40-206)

Performance Notes and Warranty:
These small battery kits are used for racing! They are not designed for for an average daily driver and would absolutely NOT support any sort of aftermarket stereo and they are not great in cold temperatures. These batteries are not even intended for automotive use, but we and most of the racing community use them as such. STM does not warranty batteries. We offer the STM Lifetime Guarantee on the STM Battery Tray, but we cannot warranty the batteries themselves as we are all using them in a way they were not intended for and any attempt we have made to have them warrantied by the manufacturer has been denied.

The typical life we get from one of these batteries varies from 1 year to 10 years. Expect to treat this battery as a maintenance item – once it’s done, just get a new one. For a typical 300-600 HP street car, it’s fine to sit for a week, drive and race on the weekends or drive everyday in nice temperatures (40-90°). If it sits longer than 2 weeks or if it’s in freezing temps, we recommend keeping the charger handy.

These batteries will start your car with no problems and charge naturally with a working alternator, but if you’re having ignition issues… in our experience you’ll get about 10-15 attempts off a small battery before it starts to fade if it’s fully charged. If it’s been sitting untouched in a cold garage for 2 months, don’t even bother trying, put it on a charger first.

What’s the difference between the Odyssey and the Genesis? Typically the Odyssey battery has a longer lifespan than the Genesis. Otherwise, it honestly comes down to cosmetics… That red-orange battery top looks terrible in a blacked-out engine bay. The choice is yours. Read more about each battery:
• Genesis 16EP
• Odyssey PC680

STM Battery Tray Includes:
(1) STM Battery Tray
(2) Post Braces
(2) M6 Stainless Flat Washers
(2) M6 Stainless Lock Washers
(2) 1/4×20 Stainless Button Head Bolts
(3) M8 Stainless Flat Washers
(3) M8 Stainless Lock Washers
(2) M8 Stainless Nuts
(1) M8x20 Stainless Button Head Bolt

Additional Notes:
The batteries no longer include the STM battery top decals.


Additional information


with Odyssey PC680 and Terminals, with Genesis 16EP and Terminals, No Battery – Tray Only


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