Vance & Hines Harley Davidson Fuelpak FP4 2021 + Softail / Touring

66043

The Vance & Hines FP4 brings our legendary fuel tuning and performance to your 2021-2023 Harley-Davidson Touring and Softail models, with all new features, and the ease of use you expect from Vance & Hines.

FP4 is now also available for Touring, Softail, Dyna, Sportster, and Street models from 2007 and up.

With its state-of-the-art Bluetooth enabled app-driven technology, FP4 empowers you to do 100% of your tuning right from the palm of your hand with your mobile device, backed by industry-leading customer support, all while maintaining 49-state emissions compliance and thereby keeping your Harley-Davidson factory warranty intact.