ThunderMax
ThunderMax AutoTune ECM 309-589 — 2018–2020 M8 Softail
ThunderMax AutoTune ECM 309-589 — 2018–2020 M8 Softail
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$1,088.95 USD
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$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.
Need fitment help?Standalone ThunderMax ECM with wide-band AutoTune for 2018–2020 Milwaukee-Eight Softail models.
For a Trask turbo build, match the ECM to the motorcycle and load the correct Trask turbo calibration. ECM sold separately from the turbo kit.
Uses 18 mm oxygen sensors; verify exhaust sensor ports. Race-ready applications only. Cannot ship to California.
Manufacturer part: 309-589. Supplier part: 1020-2795.
