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Ships within 48 hours · Estimated delivery Aug 23 - Aug 28
Kits include all required bearings
High-volume K&N air filter
Baseplate is powder-coated steel and carpeted to protect painted surfaces
18mm and 12mm O2 bungs welded into the primaries
Slim line design: 4
Thundermax Engine Control Unit - 309-592 For Harley Softail 2021-2024 harley davidson Kits include all required bearingsFeatures 2 wide band Bosch 5 wire oxygen sensors (18 mm) with AutoTune connection harness ThunderMax quick start easy install and printable comprehensive users manual Never outgrow it easily accomodates bike change No Dyno required automatically tunes for riding style and riding conditions ThunderMax performance engine control module (ECM) 100% engineered and made in the USA Easy to install and simple to use Specs PRODUCT NAME ELECTRONIC CONTROL
