The Focal ES100K is a 4-inch two-way component speaker kit designed for compact installations. It uses Kevlar K2 cones with a central phase plug for improved dispersion and delivers a measured sensitivity of 90 dB (2.83 V/1 m). High frequencies are handled by 20 mm TKM aramid inverted dome tweeters with an M-shaped profile to control deformation and reduce distortion.

The kit includes compact passive crossovers and a range of installation accessories. Tweeters can be installed in factory locations, on tilting frames, or flush-mounted. Aluminium and mesh grilles are supplied for finishing and protection, making the kit adaptable to a wide variety of vehicle set-ups.