Fli FU4-F1 Underground Series 2-Way 4" Coaxial Speakers Relays and Flashers Not available from any other

Not available from any other manufacturer SSI lets you reconfigure your system by simply flipping a switch

Custom ported and sealed enclosures designed for the T1D415 confirm recommended enclosure volume and tuning with Rockford Fosgate specifications

The Try Me demo button cycles through the lamp's stop

Complete Mounting Hardware Includes stainless steel screws and clip nuts resisting corrosion in saltwater environments

5 watts maximum output

Fli FU4-F1 Underground Series 2-Way 4" Coaxial Speakers Relays and Flashers Not available from any otherFrom the Masters of Audio in the UK! From the makers of Vibe UKs largest car audio brand come the new FLI Underground series, designed for easy installation and huge output without breaking the bank, the FLI Underground range is guaranteed to get the party started in your ride each and every time you get in. The two way coaxial speaker configuration with dimpled IMPP woofer cone for fast articulate bass and outstanding high frequency response. All