SI-TEX 120kHz Lexan Low-Profile Thru-Hull Transducer f/SDD-110

The SI-TEX 120kHz Lexan Low-Profile Thru-Hull Transducer for SDD-110 is engineered for anglers and boaters who demand reliable sonar performance without the deck clutter of traditional external mounts. This transducer bridges the gap between discrete installation and serious fish-finding capability, designed specifically to integrate with SI-TEX SDD-110 chartplotters and sonar systems. Whether you're targeting structure in shallow coastal waters, suspended pelagics offshore, or navigating unfamiliar bottom, a properly mounted thru-hull transducer delivers consistent returns free from turbulence and aeration that plague transom-mount alternatives.

Built from impact-resistant Lexan, this low-profile design minimizes hull drag and reduces the risk of fouling on obstacles during shallow-water operation. The 120kHz frequency excels at medium-range target resolution and bottom definition, offering superior detail compared to lower frequencies while maintaining adequate depth penetration for most recreational and light commercial applications. The compact profile allows for flush or near-flush installation in areas where space is constrained, preserving both aesthetics and performance without requiring extensive hull modification or through-hull drilling beyond standard transducer specifications.

This transducer is the optimal choice for boat owners running SI-TEX SDD-110 systems seeking OEM-matched hardware that guarantees seamless compatibility and full feature access. Installation requires a thru-hull mounting bracket and careful hull positioning to eliminate turbulence—typically below the waterline, forward of the prop wash, and away from through-hull fittings. Proper installation ensures maximum signal clarity and eliminates false bottom readings that plague poorly positioned transducers, making this unit ideal for serious fishing applications where sonar accuracy directly impacts success rates.