50 STATE LEGAL - GRAND NATIONAL® SLIP-ONS for M8 TOURING MODELS - Black Tail Lights ThunderMax ECM with Auto-Tune module

ThunderMax ECM with Auto-Tune module mounts conveniently in place of the factory ECM and plugs in to the existing harness

Handlebar Extended Wiring +12" For Big Twin & Sportster 1973-1981

Also included with this kit is a throttle cable compatible with the stock throttle housing or our 7/8” Throttle Assembly (P/N #101-0221)

over 600 degrees

50 STATE LEGAL - GRAND NATIONAL® SLIP-ONS for M8 TOURING MODELS - Black Tail Lights ThunderMax ECM with Auto-Tune module50 STATE LEGAL GRAND NATIONAL SLIP ONS for M8 TOURING MODELS BLACK Are you wanting to make your M8 bike louder and add some HP? These Grand National Slip ons will do exactly that. Manufactured from quality materials and finished in a long lasting black finish. Features: Race inspired Grand National endcap High flowing baffle design Aggressive sound and excellent horsepower Removable dB reducer Made in U. S. A. Note: Qualified manufacturer declared U.