Over-Centre Mechanism · Tool-Free Locks Tighter Under Load The iSi PoziLock Latch Assembly secures the main beam in the upright travel position with a precision-engineered over-centre mechanism that actually tightens as the load increases. One tap to release. Self-aligning on re-engagement. No tools, no fumbling, no second-guessing whether it's locked. Over-Centre Latch Self-Aligning Design All Hardware Included Lifetime Warranty See It In Action How The PoziLock Works Watch the over-centre mechanism engage, lock under load, and release with a single tap. This 60-second demo shows the complete raise, lock, release and lower cycle. Effortless Operation Three Moves. Every Time. The PoziLock is designed to make raising and lowering your carrier a one-person, tool-free operation. The same three steps whether you're in the driveway or at the trailhead. 1 Raise The Beam Swing the main beam up into the travel position. The PoziLock self-aligns automatically as the beam approaches upright, guiding the stainless pivot pin straight into position. 2 Insert The Pin Slide the stainless steel pivot pin through and secure with the R-clip. The over-centre mechanism engages and the latch tightens progressively as road loads increase during travel. 3 Tap To Release When you need rear access, remove the pin and give the latch a quick tap with your foot to disengage. The beam pivots down and clear. No tools, no effort, no drama. The Engineering Why Over-Centre Matters Most latches loosen under vibration. The PoziLock does the opposite. The over-centre geometry means the mechanism passes through a dead point during engagement, so every bump and vibration on the road drives the latch tighter rather than shaking it loose. Precision Engineered Tightens As The Load Increases The over-centre mechanism locks the main beam securely in the upright position. Road loads, vibration and corrugations all work in your favour, driving the latch progressively tighter. The result is a connection that gets more secure the harder you push it. Over-centre geometry prevents vibration loosening Self-aligning for smooth pin reinsertion Stainless steel pivot pin for corrosion resistance Compatible with all iSi vehicle pivot base systems Complete Kit What's In The Box Everything required for a direct replacement or spare. No additional hardware needed. 1 PoziLock Latch AssemblyComplete over-centre mechanism ✓ All Mounting HardwareEverything required for installation Lifetime Warranty Tool-Free Operation Made In Melbourne 30 Day Returns Need a replacement or a spare? The PoziLock Latch Assembly is a direct drop-in replacement for all iSi vehicle pivot base systems. If you're unsure which generation you have, our team can help. Speak to a Sales Engineer
