ThunderMax Z309-485 ThunderMax w/AutoTune for Dyna 04-11/Sportster 10-13/Rocker 08-10

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 rideability. 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!

* Upgrade on OEM # 32534-05, 32534-11

Tech Tips:-

* Also fits 2009 FXSTSSE2