ThunderMax with AutoTune. Fits Softail 2011 Only - Thunder Max Luggage * Dyna Low Rider or

* Dyna Low Rider or other applications which contain a pair of stock instruments

* With Performance Baffles

or for riders who ride 2 up over 50% of the time

FLSTC Heritage and FLS Slim models

* Get a Bigger & Beefier Rack while still maintaining a stylish look

ThunderMax with AutoTune. Fits Softail 2011 Only - Thunder Max Luggage * Dyna Low Rider orThunderMax 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