FKB168

Versatile Speaker Upgrade for Multiple Factory Sizes

Upgrade your vehicle’s audio system with the MB Quart FKB168 Formula Series 5x7 / 6x8-Inch 2-Way Coaxial Speakers. Designed for flexible installation across multiple factory speaker sizes, these speakers deliver improved clarity, stronger midbass, and more dynamic overall sound compared to stock systems. With 100 watts peak power handling and 50 watts RMS, they provide a balanced performance upgrade for daily driving.

The 2-way coaxial design integrates a woofer and tweeter into one efficient system, making installation simple while improving sound coverage and tonal balance inside the vehicle.

Durable Materials Built for Clean, Powerful Audio

The MB Quart FKB168 Formula Series Speakers are engineered with high-quality materials designed for long-term durability and accurate sound reproduction. The aluminum dome tweeters deliver crisp, detailed high frequencies with enhanced reliability across varying listening conditions.

A lightweight thermal-formed polypropylene cone ensures fast midrange response and natural tonal balance, while the butyl rubber surround improves durability and enhances midbass impact.

The high-temperature adhesive bond between cone and surround ensures structural integrity even under high power loads or extreme environmental conditions, making these speakers dependable for long-term use.

Stable Installation & Balanced Sound Performance

The MB Quart FKB168 speakers feature a textured ABS gasket, ensuring a tight and rigid seal against the mounting surface. This helps reduce vibration, improve acoustic efficiency, and maintain consistent sound output.

Designed for compatibility with both 5x7 and 6x8-inch factory speaker openings, these speakers provide a convenient upgrade path for a wide range of vehicles. With 50 watts RMS at 4 ohms, they are efficient enough for factory head units while still responding well to aftermarket amplification.

The Formula Series tuning delivers a clean, balanced listening experience suitable for all music styles.

Highlights

• 5x7 / 6x8-Inch 2-Way Coaxial Speaker Pair
• Up to 100 Watts Peak Power Handling
• 50 Watts RMS @ 4 Ohms for stable performance
• Compatible with multiple factory speaker sizes
• Aluminum Dome Tweeters for crisp high-frequency detail
• Polypropylene Cone Woofer for balanced midrange response
• Butyl Rubber Surrounds for durability and deeper midbass
• High-temp adhesive prevents cone/surround separation
• Textured ABS gasket for secure mounting seal
• Lightweight cone design for fast audio response
• Formula Series tuned for clean, distortion-free sound
• Ideal for factory speaker replacement upgrades

Package Contains

• 1 Pair of MB Quart FKB168 5x7 / 6x8-Inch Coaxial Speakers
• Mounting Hardware Kit
• Speaker Wiring / Terminals (if included by manufacturer)
• Installation / User Manual (if included by manufacturer)
• Manufacturer Retail Packaging Box