Forespar Tiller Lock Box

The Forespar Tiller Lock Box is a compact cockpit-mounted steering control device designed to secure ball-grip Forespar tiller extensions in a fixed position. Built for sailors who need hands-free helm control or drift-fishing capability, this tiller lock box converts a manual steering extension into an adjustable, locking mechanism—all within minutes of installation into your coaming.

Installation requires a cut-out measuring 3-3/8 inches wide by 4-3/4 inches high by 1-1/2 inches deep into your cockpit coaming. The lightweight design (0.2 lbs) minimizes added weight aloft and in the steering system. Once mounted, the mechanism accepts standard Forespar ball-grip extensions, locking them in a predetermined angle without requiring crew intervention. This proves particularly valuable during extended offshore passages, singlehanded cruising, or situations where the helmsman needs temporary release from the wheel to attend other deck tasks.

Cruising sailors, coastal fishermen, and liveaboard boaters benefit most from this device. Weekend anglers working calm bays or protected waters can set a course and focus on rigging tackle or managing a catch. Sailors making night passages or managing single-handed operations reduce fatigue and improve safety by removing constant steering pressure. The adjustable locking feature allows tuning for different wind conditions or target headings without deck-level adjustments.

Forespar Performance Products has specialized in marine steering solutions and performance hardware for decades, making the Tiller Lock Box a purpose-built component rather than an adaptation from unrelated marine equipment. Boaters choosing this accessory gain reliable, straightforward autopilot functionality at a fraction of the cost and electrical complexity of full autopilot systems, with zero dependency on batteries or electronics in the steering circuit itself.