• ThunderMax 309-592 AutoTune ECM
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ThunderMax

ThunderMax AutoTune ECM 309-592 — 2021–2024 M8 Softail — Includes ECM Caddy

ThunderMax AutoTune ECM 309-592 — 2021–2024 M8 Softail — Includes ECM Caddy

$1,088.95 USD
$1,088.95 USD
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    Catalog coverage is incomplete. A missing match does not mean a part will not fit. Confirm fitment for modified bikes with our shop.

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    Standalone ThunderMax ECM with wide-band AutoTune for 2021–2024 m8 softail — includes ecm caddy.

    Includes the Softail-specific mounting caddy. 2025 and later Softail compatibility must be confirmed separately.

    For a Trask turbo build, use the ECM matching the motorcycle and have the correct Trask turbo calibration loaded. The turbo kit does not include this ECM.

    Uses 18 mm oxygen sensors; verify exhaust sensor ports. Race-ready applications only. Cannot ship to California.

    Manufacturer part: 309-592. Supplier part: 1020-3515.

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