Unlock the full potential of your Harley-Davidson with the Vance & Hines Fuelpak 4 Tuning Module. Designed for Dyna, Softail, Sportster, Touring, and Trike models, this advanced tuning module enhances your bike's performance with precision and ease. Featuring Bluetooth connectivity, it seamlessly integrates with your smartphone for real-time tuning adjustments and performance tracking. The FP4 module offers autotune, pre-programmed maps, and programmable options to suit your riding style. Experience unmatched power, torque, and a smoother ride with this innovative tuning solution. Proudly made in the USA, the Fuelpak 4 is your key to ultimate motorcycle performance.