Helix Compose i3 Ci3 K200.2FM-S3 Component 8 Inch FlexMount Speakers 100w RMS

The Helix Ci3 K200.2FM-S3 is an 8 inch (200 mm) two-way component speaker set from the Helix Compose i3 range, rated at 100 W RMS at 3 ohms. It is designed for vehicles with factory 8 inch woofer positions where additional bass depth from the front stage is needed.

This listing is the Ci3 K200.2FM-S3 8 inch component set. The Helix Compose i3 component range is also available in 4 inch (Ci3 K100.2FM-S3, 80 W RMS).

The set includes the Ci3 T20FM-TI tweeter, Ci3 W200FM-S3 woofer and Ci3 FX-UNI.2 crossover. Car-specific FlexMount200 rings included are the CFMK200 UNI.1, CFMK200 VW.1 and CFMK200 VW.2.

Key specifications

• Size: 8" / 200 mm component set
• Power handling: 100 W RMS / 150 W max
• Impedance: 3 ohms
• Frequency response: 50 Hz to 25 kHz
• Sensitivity: 94 dB @ 2.83 V / 1 m (90 dB @ 1 W / 1 m)
• Woofer mounting depth: 63.7 mm
• Woofer outer diameter: 195.0 mm (208.9 mm with universal ring)
• Tweeter: 0.75" / 20 mm titanium dome (Ci3 T20FM-TI)

HELIX COMPOSE. The perfect speaker for any composition.

The HELIX COMPOSE platform was developed to combine the convenience of universal speakers with the fitment advantages of vehicle-specific systems. Using innovative materials and smart engineering, COMPOSE speakers are designed to deliver high efficiency, strong dynamics and excellent sound quality in a wide range of vehicles.

Performance highlight

The i3 two-way component system uses high-quality materials and smart engineering to slot cleanly into the vehicle. All components are tuned to work together, and the system is optimised for use with HELIX and MATCH amplifiers. Mechanical connection technologies focus on safety and ease of integration, with broad vehicle compatibility.

High efficiency

The Ci3 K200.2FM-S3 uses 3 ohm technology, which is fully compatible with all HELIX and MATCH amplifiers and delivers a meaningful gain in efficiency and maximum sound pressure. Certain models are also available in an optional 2 ohm variant for use with appropriate amplifiers.

Cenosphere paper cone

The woofer cone uses an innovative Cenosphere coating, in which hollow spheres are incorporated into a polyamide layer applied to the cone surface. This increases stiffness and improves internal damping, producing a lightweight yet exceptionally rigid cone with strong accuracy in sound reproduction.

High-tech polymer basket

The i3 speaker basket is made from a high-tech polymer composite reinforced with glass spheres. This construction maximises rigidity while minimising self-resonance, eliminating flux modulation in the magnetic system and resisting thermal influences — all in a compact form factor suited to tight installation spaces.

Stunning highs and outstanding stability

The 0.75" / 20 mm titanium dome tweeter combines outstanding structural stability with low moving mass, high internal damping and strong thermal resistance, delivering clear, compression-free treble reproduction.

Perfectly separated

The Ci3 FX-UNI.2 crossover is tuned specifically for the COMPOSE i3 component system. It features a 6-stage tweeter level adjustment with a 12 dB slope for optimal adaptation to installation position, plus integrated tweeter protection. Its compact dimensions suit tight spaces, and it is compatible with COMPOSE Connect and WireKit technologies for a safe, polarity-correct connection to automotive standards.

COMPOSE Connect

COMPOSE Connect is a plug-in connection system that simplifies installation alongside HELIX COMPOSE components. Standard flat plugs and couplings snap into proprietary plastic housings, creating a secure, automotive-standard connection that prevents polarity reversal — no soldering required.

FlexMount20 & FlexMount200 – Universal meets car-specific

FlexMount is a mounting system using specially developed adaptor rings that allow COMPOSE FlexMount speakers to be installed in a very wide range of vehicles. The matching FlexMount adaptor ring transforms the universal speaker into a vehicle-specific fit, installed directly into the original factory speaker position.

WireKits – Plug & Play at its best

HELIX WireKits connect COMPOSE speaker kits to the vehicle's original wiring harness without modification. Built to automotive industry standards, these locking adaptor cables are designed to withstand the demanding environmental conditions found inside vehicles.