ThunderMax ECM Kit with Integral Auto Tune — 2021–2024 Softail

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The ThunderMax engine control module kit with integral Auto Tune is listed in the supplier document for 2021–2024 Softail models. Start with the exact motorcycle and its modificati ons before deciding whether this kit fits your plan.Choose your variant Drag SKU 1020-3515. Supplier-listed application: 2021–2024 Softail; confirm exact model eligibility. Engine control module kit with integral Auto Tune. Before you orderThe supplier flags this as emissions-related and notes special instructions. Confirm current application restrictions, intended-use eligibility, kit contents and setup requirements before ordering. No horsepower or rideability result is guaranteed.Want it installed?For Tucson and Marana installation inquiries, send SIC Cycles your year, model and current setup. Request a parts and installation quote. Installation is separate from the product price unless your quote explicitly includes it. Show more