Whitecap 20" Gas Spring - 120lb - Black Nitrate

The Whitecap 20" Gas Spring - 120lb - Black Nitrate is a marine-grade support strut engineered for engine hatch covers, cabin lids, and removable hardtops on fishing boats and recreational vessels. After years on the water, you know that reliable hardware keeps your boat running smoothly and safely—this gas spring delivers the consistent lift force needed to prop open heavy hatches without fatigue or sagging. Built for saltwater and freshwater environments alike, it handles the corrosive exposure that standard springs cannot.

This Whitecap gas spring features a black nitrate finish that resists rust and corrosion, critical for long-term durability in marine conditions. With an extended length of 20 inches and compressed length of 12 inches, it offers 8 inches of travel to smoothly lift and support large covers without binding. The 120-pound force (P1) ensures firm, controlled opening even in rough sea conditions, while the 8mm rod diameter and 18mm tube diameter provide structural integrity and smooth piston action. The nitrogen charge delivers consistent support throughout the full range of motion, eliminating the weakening that affects mechanical springs over time.

Boaters maintaining center console, cuddy cabin, or larger cruising vessels benefit most from this spring, especially when engine access or storage compartment lids require frequent opening. Installation is straightforward: mount the spring between the hatch frame and the lid using ball-socket fittings (sold separately) at both ends, ensuring alignment with the existing hatch pivot points. The compact 0.7-pound weight won't affect your boat's weight distribution, and the proven Whitecap design has earned trust across commercial and recreational fleets for decades.