Pay in 4 interest-free payments of $126.62 Learn more
Ships within 48 hours · Estimated delivery Jul 26 - Jul 31
3 shell sizes: XS-SM
Smart phone friendly finger tip
* Deflective disc valve stacks
* Heavy-duty bottom-mount design with a chrome finish
65% polyester / 35% cotton
ThunderMax with AutoTune. Fits Softail 2025up XXL 3 shell sizes: XS-SMProduct Details 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,