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#309-604 Thundermax® With Wide Band Autotune for 2024 Road Glide

#309-604 Thundermax® With Wide Band Autotune for 2024 Road Glide

ThunderMax®
$1,088.95
The new ThunderMax® system for the 2024 Road Glide Helix models is complete system designed specifically for this specific model. This highly advanced, stand-alone tuning system utilizes proprietary Autotune technology specifically designed to interface with wide-band oxygen sensors to correct abnormal A/F readings over a wide range of throttle positions and RPM ranges to prevent over rich or lean conditions. ThunderMax® is made in the USA and comes assembled, no wire-cutting or splicing required to install. Replaces factory ECM and narrow band oxygen sensors. *Supports RDRS function.  

Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.

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#309-592 Thundermax® With Autotune for 2021+ Softail®

#309-592 Thundermax® With Autotune for 2021+ Softail®

ThunderMax®
$1,088.95
ThunderMax® is complete system designed specifically for EFI equipped Harley Davidson® motorcycles. This highly advanced, stand-alone tuning system utilizes proprietary AutoTune technology specifically designed to interface with wide-band oxygen sensors to correct abnormal A/F readings over a wide range of throttle positions and RPM ranges to prevent over rich or lean conditions. ThunderMax® is made in the USA and comes assembled, no wire-cutting or splicing required to install. Replaces factory ECM and narrow band oxygen sensors. *Supports RDRS function on 2019-2023 models. No RDRS function for Tri-Glide Models- 309-588 fitment only for Tri-Glide 2017-2018 models only.

Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.

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#309-591 Thundermax® With Autotune for 2021-up Touring * Excludes 2023-2024 CVO®(VVT) and APEX Platform

#309-591 Thundermax® With Autotune for 2021-up Touring * Excludes 2023-2024 CVO®(VVT) and APEX Platform

ThunderMax®
$1,088.95
ThunderMax® is complete system designed specifically for EFI equipped Harley Davidson® motorcycles. This highly advanced, stand-alone tuning system utilizes proprietary AutoTune technology specifically designed to interface with wide-band oxygen sensors to correct abnormal A/F readings over a wide range of throttle positions and RPM ranges to prevent over rich or lean conditions. ThunderMax® is made in the USA by Thunder-Heart Performance Corp in White House, TN *Supports RDRS function on 2021 and up models.

Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.

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ThunderMax® With Wave Tune For 2017-2019 Milwaukee-Eight® Touring Models

#309-588 ThunderMax® With Wave Tune For 2017-2020* Milwaukee-Eight® Touring Models

ThunderMax®
$1,088.95
ThunderMax® is complete system designed specifically for EFI equipped Harley Davidson® motorcycles. This highly advanced, stand-alone tuning system utilizes proprietary AutoTune technology specifically designed to interface with wide-band oxygen sensors to correct abnormal A/F readings over a wide range of throttle positions and RPM ranges to prevent over rich or lean conditions. ThunderMax® is made in the USA by Thunder-Heart Performance Corp in White House, TN. *Supports RDRS function on 2019-2020 models.

Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.

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ThunderMax® With Wave Tune For 2018-2019 Milwaukee-Eight® Softail® Models

#309-589 ThunderMax® With Wave Tune For 2018-2020* Milwaukee-Eight® Softail® Models

ThunderMax®
$1,088.95
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 specificly designed to interface with wide-band oxygen sensors to automaticly adjust a wide range throttle positions and RPM ranges to deliver unmatched performance and driveability like no other product in the industry. ThunderMax® is made in the USA and 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!  * ThunderMax for 2021 Softail® models is under development.

Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.

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ThunderMax® 50 with AutoTune: Street Legal EFI Performance

ThunderMax® 50 with AutoTune: Street Legal EFI Performance

ThunderMax®
$0.00
ARB E.O. #'s D-644, K-001, K-001-1, K-001-2. K-001-3 ThunderMax® 50 is the most powerful, cost effective, EPA-compliant tuning device in the industry! ThunderMax® 50 provides excellent performance while meeting the tough emissions standards of California Air Resources Board. With its intelligent design, ThunderMax® 50 is continually tuning the engine, adjusting all points of the base map to meet the Air/Fuel targets. Wide-Band sensors provide feedback to the ThunderMax® AutoTune module for automatic AFR adjustments. This proven system provides excellent performance under any riding conditions. ThunderMax® 50 is the one that WORKS!  
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ThunderMax® With Wave Tune For 2014-2016 Throttle-By-Wire Touring Models

ThunderMax® With Wave Tune For 2014-2016 Throttle-By-Wire Touring Models

ThunderMax®
$1,088.95
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 specificly designed to interface with wide-band oxygen sensors to automaticly adjust a wide range throttle positions and RPM ranges to deliver unmatched performance and driveability like no other product in the industry. ThunderMax® is made in the USA and 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!

Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.

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ThunderMax® With AutoTune For 2008-2013 Throttle-By-Wire Touring Models

ThunderMax® With AutoTune For 2008-2013 Throttle-By-Wire Touring Models

ThunderMax®
$1,088.95
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 specificly designed to interface with wide-band oxygen sensors to automaticly adjust a wide range throttle positions and RPM ranges to deliver unmatched performance and driveability like no other product in the industry. ThunderMax® is made in the USA and 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! Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.
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ThunderMax® With AutoTune For 2002-2007 Touring Models

ThunderMax® With AutoTune For 2002-2007 Touring Models

ThunderMax®
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 specificly designed to interface with wide-band oxygen sensors to automaticly adjust a wide range throttle positions and RPM ranges to deliver unmatched performance and driveability like no other product in the industry. ThunderMax® is made in the USA and 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!

Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.

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ThunderMax® With AutoTune For 2002-2007 Touring Models

ThunderMax® With AutoTune For 2001-2016 Softails®

ThunderMax®
$0.00
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 specificly designed to interface with wide-band oxygen sensors to automaticly adjust a wide range throttle positions and RPM ranges to deliver unmatched performance and driveability like no other product in the industry. ThunderMax® is made in the USA and 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!

Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.

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ThunderMax® With AutoTune For 2004-2016 Dyna® Models®

ThunderMax® With AutoTune For 2004-2016 Dyna® Models®

ThunderMax®
$1,088.95
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 specificly designed to interface with wide-band oxygen sensors to automaticly adjust a wide range throttle positions and RPM ranges to deliver unmatched performance and driveability like no other product in the industry. ThunderMax® is made in the USA and 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!

Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.

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ThunderMax® With AutoTune For 2015-2016 Street® Models

ThunderMax® With AutoTune For 2015-2016 Street® Models

ThunderMax®
$1,088.95
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 specificly designed to interface with wide-band oxygen sensors to automaticly adjust a wide range throttle positions and RPM ranges to deliver unmatched performance and driveability like no other product in the industry. ThunderMax® is made in the USA and 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!

Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.

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ThunderMax® With AutoTune For 2008-2013 Throttle-By-Wire Touring Models

ThunderMax® With AutoTune For 2009-2016 Touring and Trike Models

ThunderMax®
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 specificly designed to interface with wide-band oxygen sensors to automaticly adjust a wide range throttle positions and RPM ranges to deliver unmatched performance and driveability like no other product in the industry. ThunderMax® is made in the USA and 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!

Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.

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ThunderMax® With AutoTune For 2002-2007 Touring Models

ThunderMax® With AutoTune For 2008-2012 XR1200® Sportsters®

ThunderMax®
$1,088.95
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 specificly designed to interface with wide-band oxygen sensors to automaticly adjust a wide range throttle positions and RPM ranges to deliver unmatched performance and driveability like no other product in the industry. ThunderMax® is made in the USA and 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!

Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.

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ThunderMax® With AutoTune For 2007-2020 XL Sportsters®

ThunderMax® With AutoTune For 2007-2020 XL Sportsters®

ThunderMax®
$0.00
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 specificly designed to interface with wide-band oxygen sensors to automaticly adjust a wide range throttle positions and RPM ranges to deliver unmatched performance and driveability like no other product in the industry. ThunderMax® is made in the USA and 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!

Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.

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ThunderMax® With AutoTune For 2002-2007 Touring Models

ThunderMax® With AutoTune For 2002-2016 V-Rod® Models®

ThunderMax®
$1,088.95
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 specificly designed to interface with wide-band oxygen sensors to automaticly adjust a wide range throttle positions and RPM ranges to deliver unmatched performance and driveability like no other product in the industry. ThunderMax® is made in the USA and 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!

Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.

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Zipper's® Marelli Conversion Kit with ThunderMax® for 1999-2001 Twin Cams®

Zipper’s® Marelli Conversion Kit with ThunderMax® for 1999-2001 Twin Cams®

ThunderMax®
$0.00
Stop cussing that early EFI system, just replace it! Zipper’s has taken the popular ThunderMax® EFI electronics and merged it with a single-throat Delphi®-style throttle body (with the help of some specially made parts) and developed this full conversion kit for bikes with H-D's earliest Magnetti-Marelli EFI systems. This kit allows you to retain the original wiring harness and gas tank, while upgrading to similar components used in the highly durable and reliable Deplhi®-based bikes of 2002-2005. These kits are built to order with special parts for each application, Please contact a sales representative for lead time.

Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.

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Zipper's® Marelli Conversion Kit with ThunderMax® for 1995-1998 EV® Models

Zipper’s® Marelli Conversion Kit with ThunderMax® for 1995-1998 EV® Models

ThunderMax®
$0.00
Stop cussing that early EFI system, just replace it! Zipper’s has taken the popular ThunderMax® EFI electronics and merged it with a single-throat Delphi®-style throttle body (with the help of some specially made parts) and developed this full conversion kit for bikes with H-D's earliest Magnetti-Marelli EFI systems. This kit allows you to retain the original wiring harness and gas tank, while upgrading to similar components used in the highly durable and reliable Deplhi®-based bikes of 2002-2005. These kits are built to order with special parts for each application.

Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.

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ThunderMax® Zip Kit for SE® 120R Engines

ThunderMax® Zip Kit for SE® 120R Engines

ThunderMax®
$0.00
Got your eye on a Screamin’ Eagle® or 120R H-D® engine? Zipper's ZIP KITS powered by ThunderMax® are the quick and easy way to simplify installation and power tuning on an EFI equipped big engine! In compliance with ARB emissions laws, this product is not sold or shipped to California.
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ThunderMax ® Oil Cooler Fan for M8 MODELS

ThunderMax ® Oil Cooler Fan for M8 MODELS

ThunderMax®
$262.95
The ThunderMax Oil Cooler Fan for 2017-Up oil cooled Touring®* models is the answer to overheating M8 engines. The fan only takes 15 minutes to install and is plug-n-play. If your motorcycle is equipped with a ThunderMax ECM, just plug the fan in and you are ready to go. If your motorcycle has a stock ECM you will need to visit your local dealer to have the bike flashed. The oil cooler fan works by using engine temp and vehicle speed to reduce heat and keep your M8 engine running cool. Fitment Exclusions: *2018 CVO® Models & 2019 CVO Streetglide®
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#372-002 USB/Serial Port Adapter for ThunderMax®

#372-002 ThunderMax® USB/Serial Port Adapter

ThunderMax®
$33.95
If your laptop or PC does not have a serial port, this inexpensive adapter will instantly add a serial port to your computer for communicating between ThunderMax® EFI modules and models listed below. Part #372-002
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Replacement ECM for 1995-2001 Marelli Throttle Bodies Equipped Engines with ThunderMax AutoTune Features

Replacement ECM for 1995-2001 Marelli Throttle Bodies Equipped Engines with ThunderMax AutoTune Features

ThunderMax®
$0.00
Here is a product for folks who want to upgrade or replace the electronic control module on their 1995-2001 Touring model equipped with Magnetti-Marelli EFI. This module is designed to be used on stock or near-stock engines with the factory dual-throat throttle body and its related components. Includes integral ThunderMax AutoTune system that uses feedback from wide-band oxygen sensors to make automatic air-fuel adjustments within the ThunderMax ECM. Requires exhaust equipped with or modified to accept 18mm oxygen sensor bungs.

This product is not for sale or use on pollution controlled vehicles.

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ThunderMax® AutoTune Data Port "Y" Harness

ThunderMax® AutoTune Data Port “Y” Harness

ThunderMax®
$34.95
The ThunderMax® AutoTune gets its power and communicates to the ECM through the motorcycle’s factory data port plug. This ‘Y’ harness allows the AutoTune module to be plugged in with an additional plug remaining open for other tasks. Not applicable for 2008-up Touring, 2011-Later Softail®, and 2012-Later Dyna® models.
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ThunderMax® AutoTune Harness Repair Kit

ThunderMax® AutoTune Harness Repair Kit

ThunderMax®
$19.95
This kit includes components required to make repairs to a damaged AutoTune wire harness and connector plug. Included is a replacement connector, connector terminals, replacement wires with terminated ends and shrink tubing. Use to repair a damaged, but functioning, AutoTune module harness.
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ThunderMax® Bench-Top 12 Volt Power Supply

ThunderMax® Bench-Top 12 Volt Power Supply

ThunderMax®
$129.95
Allows for off-motorcycle, bench-top programming of the ThunderMax® controller. Power supply includes power supply, switch box adapter, plug for ECM.
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#309-321: 6ft Serial Port ThunderMax® Communication Cable

ThunderMax® Communication Cables

ThunderMax®
$0.00
Replacement ThunderMax® communication cables in standard or extended lengths. See long description for application information.
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ThunderMax® Data Port Communication Device

ThunderMax® Data Port Communication Device

ThunderMax®
$0.00
Required to communicate with with ThunderMax® Modules that are inaccessible on the motorcycle.
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ThunderMax® Gen II Pigtail Harness

ThunderMax® Gen II Pigtail Harness

ThunderMax®
$25.95
Allows a second port for the communication cable connection to Gen II ThunderMax®, serial number 114,000 or higher. It is installed to the bike’s wiring harness at the 36-pin ECM connector. Handy for motorcycle models with tight clearances around the ECM such as Dyna®, Softail® Rocker® and 2002- 2005 V-Rod® models. Will not work on Throttle-By-Wire or Gen III Models. Included with ThunderMax® systems #309-364 and #309-385.
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ThunderMax® Gen III Pigtail Harness

ThunderMax® Gen III Pigtail Harness

ThunderMax®
$25.95
Allows a second USB port for the communication cable connection to the ThunderMax® Gen III (#309-460) models. It is installed to the bike’s wiring harness at the ECM connector; handy for motorcycle models with tight clearances around the ECM. Will not work on ThunderMax® TBW,Gen I & II cable-model ThunderMax®,’11-up cable Softails®, ’12-up Dyna®/Softail® models or 2014-up Sportster® systems. Included with 309-485 model ThunderMax®._x000d_
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TracMax by ThunderMax®

TracMax by ThunderMax®

ThunderMax®
$0.00
TracMax by ThunderMax is an easy to install ABS wheel size correction module that is designed to help you regain full ABS functionality on your 2014-2016 Harley Davidson® Touring and 2015-2016 Softail® models that have been equipped with an aftermarket big front wheel kit.
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