The Blam Relax 130RFS is an updated component speaker kit based on the 130RS stand-alone series. The RFS version extends playback to 80Hz-28kHz, features a renewed composite frame, reinforced connector terminals, and reduced installation depth to improve fitment in more vehicles. The kit includes two 130mm midbass drivers, two 20mm soft dome tweeters, and two 6dB/octave high-pass crossovers.

Midbass cones use high-quality cellulose pulp with butyl suspension. The woofer magnet system measures 70 x 15mm to support QTS, sensitivity and power handling. Tweeters use a Neodymium magnet with a soft dome and a 20mm CCAW voice coil. Crossovers are audiophile 6dB/octave high-pass units for component integration.