• Color: Black
• Model: TFI BOX

The **Big Gun TFI Power Box** for the **2018-2019 Polaris RZR RS1** is a plug-and-play fuel controller designed to optimize EFI tuning, especially for vehicles with aftermarket exhaust systems. It enhances **horsepower and throttle response** while allowing quick and easy adjustments using integrated faceplate buttons-no computer required. Installation takes just minutes, and the unit does not interfere with the stock ECU map. Built using high-quality materials and advanced technology, this third-generation controller ensures durability and reliable performance. Backed by a **1-year limited warranty**, it is an excellent upgrade for maximizing your RZR RS1's potential.