Description
Maximise Your Bass Without Sacrificing Boot Space
BASSER FBfelg04 Spare Tyre 18" – 10" Fit-Box Boot Subwoofer Enclosure | 15L
Upgrade your car audio system with the BASSER FBfelg04 Spare Tyre 18" Fit-Box Subwoofer Enclosure, specifically designed to fit neatly inside an 18-inch spare wheel. Engineered to house a 10-inch (25cm) subwoofer and provide a 15-litre internal volume, this innovative enclosure delivers powerful, accurate bass while preserving valuable boot space.
Whether you're building a stealth audio system or simply want deeper bass without compromising practicality, this spare tyre subwoofer enclosure offers the perfect solution.
Designed for Superior Sound Performance
The BASSER FBfelg04 Fit-Box enclosure allows your subwoofer to perform as the manufacturer intended. Furthermore, the carefully calculated 15-litre enclosure volume helps optimise low-frequency response, delivering tighter, cleaner, and more controlled bass throughout your vehicle.
As a result, you can enjoy enhanced audio performance while maintaining a factory-style appearance.

Space-Saving Spare Wheel Design
Unlike traditional subwoofer boxes that take up valuable cargo space, the Fit-Box enclosure fits discreetly within your spare wheel well. Consequently, you can enjoy powerful bass without sacrificing storage space or interfering with the everyday functionality of your vehicle.
This makes it an ideal solution for hatchbacks, sedans, SUVs, and other vehicles where space is at a premium.
Premium European Manufacturing
Manufactured in Europe using high-quality MDF, the BASSER FBfelg04 Fit-Box enclosure features an advanced overlapping stack-up construction method. This manufacturing process significantly increases enclosure rigidity while allowing complex enclosure shapes to be created with exceptional precision.
Furthermore, the premium carpet finish is carefully applied to ensure a clean, professional appearance that complements your vehicle's interior.
Built to Last
BASSER designs its Fit-Box enclosures to withstand years of use while maintaining their appearance and structural integrity. As a result, the enclosure continues to look and perform like new long after installation.
Whether you're upgrading an existing audio system or building a new one from scratch, the BASSER Fit-Box enclosure provides the perfect foundation for exceptional bass performance.

BASSER FBfelg04 - Key Features:
- Designed to fit inside an 18-inch spare wheel
- Suits 10-inch (25cm) subwoofers
- 15-litre internal enclosure volume
- Space-saving stealth installation
- High-quality MDF construction
- Advanced overlapping stack-up manufacturing process
- Premium carpet finish
- Preserves valuable boot space
- Manufactured in Europe
- Optimised for accurate, powerful bass response
Why Choose the BASSER Fit-Box Enclosure?
If you're looking for a discreet and effective way to add deep, impactful bass to your vehicle, the BASSER Spare Tyre 18" – 10" Fit-Box Subwoofer Enclosure offers the perfect combination of performance, practicality, and durability. Ultimately, it allows you to enjoy premium bass performance without sacrificing the functionality of your vehicle.











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