STM Lightweight PC925 Battery Kit for Evo X

STM Tuned Inc.



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The STM Odyssey PC925 Battery Kit for Evo X is perfect for street cars and fits cleanly in the stock location dropping 11 pounds from the rear of the car. Installs in just minutes and fits perfectly behind the stock trunk panels.

The full kit includes an Odyssey PC925 battery with new terminals and install hardware. Please note we cannot ship batteries outside the continental USA, so the install kit is also available separately without a battery.

Vehicle Fitment:
2008-2015 Mitsubishi Lancer Evolution X

Also Available:
Evo X 680 Small Battery Kit

Stock Battery Weight: 35.65 pounds
STM-BATK-EVOX-PC925 STM Battery Kit with Odyssey PC925 and Terminals 24.20 pounds
11.45 lighter than stock
STM-BATK-EVOX-TD-925 STM Battery Tie Down Kit (Battery is not included)
• 11 Pounds Lighter than Stock
• Quick and Easy Install
• Fits Behind Factory Trunk Panels
• Stock Location Mounting

Performance Notes and Warranty:
STM does not warranty batteries. We offer the STM Lifetime Guarantee on the STM Battery Tray, but we cannot warranty the batteries themselves 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 2 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 2 weeks to a month, drive and race on the weekends or drive everyday in nice temperatures (40-90°). If it sits longer than 3 weeks or if it's in freezing temps, we recommend keeping the charger handy. This battery will handle normal audio systems, a subwoofer and mild accessories like lighting or alarms. It's probably not suited for additional amps or more than one sub.

We have not encountered any performance issues with cranking. These 925 batteries are significantly more powerful than the smaller 680 and honestly these 925's make a great lightweight option for a daily driven street car. Read more about the battery:
Odyssey PC925 Battery

STM Install Kit Includes:
(1) STM Engraved Tie-Down Bracket
(2) "L" Mounting Brackets
(2) 1/4-20 Stainless Wing Nuts
(2) M6 Stainless Flat Washers
(2) M6 Stainless Lock Washers

Install Notes:
The longer "L" tie-down is used in the rear base (closest to the seats) of the battery tray. One is just a touch longer than the other.

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Customer Reviews

Based on 4 reviews
Freddy (Orlando, FL, US)
Easy install and saves weight!

Works exactly as it should

JCB (Denver, CO, US)
So far so good 👍

Does it’s job no issues.

Moises ortiz (Pico Rivera, CA, US)


Matthew Smith (Alexandria, VA, US)
Perfect battery for the EvoX

Fits great and saves a little on weight. The black anodized bracket looks awesome too! Quick install, just have some blue lock tight available for the terminals.

Cancer and Reproductive Harm