Thundermax ThunderMax Engine Control Unit - 309-592 For Harley Softail 2021-2024 Brand_Thundermax Use these shims to adapt

Use these shims to adapt  your favourite 1" handlebars to your 1-1/8" risers

Will respond well when used with slip-on mufflers or a full exhaust system and a high-flow air cleaner

2014-2021 Harley-Davidson CVO Electra Glide Ultra Limited FLHTKSE 2014 Harley-Davidson CVO Road King FLHRSE 2014-2023 Harley-Davidson Electra Glide Police FLHTPI 2014-2019 Harley-Davidson Electra Glide Ultra Classic FLHTCU 2014-2016 Harley-Davidson Electra Glide Ultra Classic Low FLHTCUL 2014-2024 Harley-Davidson Electra Glide Ultra Limited FLHTK 2014-2022 Harley-Davidson Road King FLHR/FLHRC 2014-2023 Harley-Davidson Street Glide FLHX/FLHXS 2015-2016 Harley-Davidson CVO Road Glide Ultra FLTRUSE 2015-2023 Harley-Davidson CVO Street Glide FLHXSE 2015-2019 Harley-Davidson Electra Glide Ultra Limited Low FLHTKL 2015-2023 Harley-Davidson Road Glide FLTRX/FLTRXS 2016 Harley-Davidson Road Glide FLTR 2016-2019 Harley-Davidson Road Glide Ultra FLTRU 2017-2025 Harley-Davidson Road King Special FLHRXS 2018-2023 Harley-Davidson CVO Road Glide FLTRXSE 2019-2022 Harley-Davidson Electra Glide Standard FLHT 2020-2024 Harley-Davidson Road Glide Limited FLTRK 2023 Harley-Davidson Electra Glide Highway King FLHFB 2023 Harley-Davidson Road Glide ST FLTRXST 2023 Harley-Davidson Street Glide ST FLHXST

Fits all 2025 to present M8 Softails including FXBB

Thundermax ThunderMax Engine Control Unit - 309-592 For Harley Softail 2021-2024 Brand_Thundermax Use these shims to adaptFeatures 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