DISCLAIMER: PRODUCTS WITH EMIS CODE 1 ARE EMISSION COMPLIANT IN ALL STATES, INCLUDING CALIFORNIA. PRODUCTS WITH EMIS CODES 2 ARE EMISSION COMPLIANT IN ALL STATES EXCEPT CALIFORNIA. PRODUCTS WITH EMIS CODE 3 ARE “COMPETITION USE” ONLY,AND NOT LEGAL IN ANY STATE FOR STREET USE ON ANY POLLUTION-CONTROLLED VEHICLES. PRODUCTS WITH EMIS CODE 4 HAVE NO U.S.TERRITORY RESTRICTIONS. 3 OCTOBER 2025 dragspecialties.com DRAG FATBOOK • DRAG OLDBOOK • PARTS & ACCESSORIES FOR INDIAN MOTORCYCLES COMPLETE STAND-ALONE EFI SYSTEM • Complete stand-alone, plug-and-play EFI wiring harness • Kit includes a NAMZ twist grip and Thundermax ECM • Eliminates BCM • EFI management ONLY; will need to purchase a complete bike wiring harness for functions like lighting, switches, gauges, etc. • Does not provide cruise control • PART #1020-4281 is designed to work with OEM throttle body PART NO. 27200002 or equivalent Twin Cam throttle body with crank position sensor only • PART #1020-4282 is designed to work with OEM throttle body PART NO. 27300122 or equivalent M-Eight throttle body with crank position sensor only • Made in the U.S.A. PART # DESCRIPTION EMIS* SUG. RETAIL 1020-42891 For 24 FLHX/FLTRX/FLTRXSTSE 3 $1,088.95 1020-4290 For 25 Softail 3 1,088.95 1 Not for models with VVT motors. THUNDERMAX ECMS WITH INTEGRAL AUTO TUNE SYSTEM • ThunderMax ECM with Auto-Tune module mounts conveniently in place of the factory ECM and plugs in to the existing harness • Utilizes wide-band O2 sensors and works as a closed-loop control system to continuously self-adjust and properly tune the motorcycle’s air/fuel ratio for all riding conditions • Easy installation: replace the factory ECM, install new O2 sensors and harness, load the correct map for your bike, and ride • Includes ThunderMax ECM with Auto-Tune Module, plug-in harness and two wide-band sensors, TMax software and communication USB cable, Quick-Start Easy Install and Comprehensive User’s Manual, technical support and free software and updates • Hundreds of maps available to download for your bike (based on model, engine size, exhaust system air cleaner, pistons, cams, etc.) – load the map of your choice and the integral auto-tune will do the rest • Improves throttle response, exhaust sound and driveability • Does not require dyno tuning • Rider can adjust idle speed, rev limit and speedometer calibration • Adjustable front and rear cylinder AFR maps, ignition timing (spark) maps, and startup maps • Works with all popular exhaust systems and is compatible with high-performance camshafts • Supports turbo, nitrous and supercharger applications • Software program allows live monitoring, recording and examination of diagnostic codes and datalogs including number of starts, engine temperature and rpm operation • New maps, software, firmware updates, map analysis and tech support available online at no charge • Made in the U.S.A. NOTE: Because of possible clearance issues, some aftermarket exhaust systems may require modifications or relocation of their O2 sensor port bungs. 1020-4281 1020-4282 1020-4290 1020-4289 PART # DESCRIPTION EMIS* SUG. RETAIL 1020‑4282 For 17‑22 M‑Eight 3 $1,999.95 PART # DESCRIPTION EMIS* SUG. RETAIL 1020‑4281 For 08‑17 Twin Cam 3 1,999.95
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