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Ships within 48 hours · Estimated delivery Aug 15 - Aug 20
Fits all iRIDE suspension systems
ignition timing
once you key off the changes are written
real time feedback to the ECM
This harness is particularly beneficial for models with tight clearances
ThunderMax for 2025 - Up Softail® Models Stage 4 Fits all iRIDE suspension systemsPart Number: 309 606 The ThunderMax Performance ECM is a complete replacement engine management system engineered to unlock your Harley Davidsons full potential. Featuring industry leading wide band AutoTune technology, ThunderMax continuously optimizes fuel delivery for your exact combination of components, delivering smoother throttle response, improved rideability, and reliable performance mile after mile. Proudly designed, manufactured, and
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