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Thunder Max M8 Tuner for 2018 - Present Harley Softail

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Product Code: 309-589
Availability: In Stock
$1,098.95

ThunderMax M8 Tuner Flyer

*CALIFORNIA CUSTOMERS MUST SIGN AND RETURN THE WAIVER FORM BEFORE WE CAN BUILD AND DELIVER THE EXHAUST SYSTEM* CALL US FOR MORE DETAILS: (817) 834-8961

ThunderMax is an industry award winning, performance ECM designed specifically for EFI equipped Harley Davidson motorcycles.  This highly advanced stand alone tuning system utilizes proprietary AutoTune technology with wide-band oxygen sensors to deliver unmatched performance and ride ability.  ThunderMax comes 100% assembled, ready to install with no wire-cutting or splicing required.  Simply replace the factory ECM and oxygen sensors, load a map, and enjoy your new ride!

ThunderMax Benefits:

  • Easy to Install & Simple to Use
  • Increased Engine Performance & Motorcycle Rideability
  • Cooler, Smoother Running Engine
  • Adjustable Idle Speed & Rev limit Control
  • No Dyno Required - Automatically Tunes for Riding Style & Riding Conditions
  • Never Outgrow It - Easily Accomodates Bike Changes (Pipes, Cams, and More)
  • 100% Engineered & Made in the USA
  • 3-Year Factory Limited Warranty




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