St.Sovereign LLC

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    Modular Gas-to-EV Powertrain Swap-Out Architectures


    Fleet Conversion & Electrification

    Modular Gas-to-EV Powertrain Conversions

    Turnkey retrofit powertrain architecture enabling legacy internal combustion engine (ICE) commercial and municipal fleets to transition directly into zero-emission electric powerplants.

    60%
    CAPEX Reduction vs. New EV
    Direct Fit
    Chassis Subframe Mounts
    Zero-Emissions
    Fleet Compliance

    Retrofit Subsystem Architecture

    Preserve chassis investments while upgrading power, efficiency, and compliance.

    ⚡

    Direct Drive Motors

    High-torque electric traction motors configured to drop into existing transmission and driveshaft tunnel spaces.

    📦

    Structural Battery Trays

    Vehicle-tailored frame rails providing safety crash enclosure and balanced center of gravity distribution.

    🖥️

    CAN-Bus Integration

    Universal ECU gateway mapping electric telemetry directly into factory dashboard instruments and steering controls.

    Plan Your Fleet Retrofit Strategy

    Calculate vehicle conversion economics and state regulatory grant applicability for commercial fleets.

    Request Conversion Audit