Take your audio experience to the next level with MarqCad Can-Am Defender HD11 Stereo Upgrade Kits. Designed for riders who want more control, better sound quality, and reliable performance, these kits provide everything your factory system is missing—without complicated installation.
Whether you’re cruising remote trails with no cell service or simply want a richer, more powerful sound system, these upgrade kits give you the flexibility to build the perfect setup. From basic AM/FM functionality to fully amplified systems with deep, hard-hitting bass, each stage is engineered to deliver clean, consistent audio in any riding environment.
Every MarqCad stereo kit is fully plug-and-play, connecting directly to your Defender HD11’s factory wiring for a seamless installation. No cutting, splicing, or guesswork—just a straightforward upgrade that looks and performs like it came from the factory.
Choose from multiple stages depending on your needs. Entry-level options provide essential radio functionality and improved tuning, while advanced packages include high-performance amplifiers, premium subwoofers, and complete system integration for a true off-road audio experience. For those who want to customize further, standalone subwoofer kits and tunable amplifier options are also available.
Built with high-quality components from trusted audio brands, these kits are designed to handle the harsh conditions of off-road riding while delivering crystal-clear sound at any speed. Whether you're working, exploring, or riding hard, MarqCad ensures your soundtrack keeps up.
Please note: Lead time is typically 1–2 weeks before shipment. Stage 1–3 kits are not compatible with Lonestar models. For XT model setups, additional information is available upon request.
Stage 1 (am/fm radio with slight audio adjustment)
-Rockford Fosgate PMX-2 Head Unit
-Am/Fm Antenna
Stage 2 (am/fm radio with full audio adjustment)
-Rockford Fosgate PMX-2 Head Unit
-Am/Fm Antenna
-JL MX280-4 Amplifier
Stage 3 (Stage 2 + Subwoofer, Enclosure, and Amplifiers)
-Rockford Fosgate PMX-2 Head Unit
-Am/Fm Antenna
-JL MX280-4 Amplifier
-Wet Sounds STX MICRO-1 Amplifier
-JL MX500-1
-JL 10W3 Subwoofer
-SSV Works RCA Sub Harness
-Amp Mounting Bracket and Hardware
Sub Kit Only
-JL MX500-1
-SSV Works Under Seat Sub Enclosure
-JL 10W3 Subwoofer
-SSV Works RCA Sub Harness
Tuneable Amp Only
-JL MX280-4 Amplifier
