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Ships within 48 hours · Estimated delivery Aug 15 - Aug 20
The ThunderMax ECM is fully adjustable with our ThunderMax tuning software or can be used just by loading a basemap
ignition timing
The rope detail keeps it classic
Fits all iRIDE suspension systems
nearly all aftermarket exhaust systems are manufactured with 18mm ports
ThunderMax for 2025 - Up Softail® Models Stage 4 The ThunderMax ECM is fullyPart 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
US$ 47.00
US$ 79.95
US$ 18.99
