How to fix a trekking pole that keeps collapsing?

A trekking pole that collapses under your weight is not just annoying – it’s dangerous. One moment you’re leaning into a steep descent, and the next, the pole shortens without warning, throwing you off balance. Fortunately, this problem is almost always fixable. This guide walks you through the most common causes and their solutions, from simple adjustments to part replacements.

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First, identify your locking system

Collapsing happens when the locking mechanism fails to hold the inner shaft in place. Trekking poles use either flick‑locks (external cam levers) or twist‑locks (internal expanders). The fix is different for each.

Fixing a flick‑lock (cam lever) collapse

Flick‑locks are the most common and easiest to repair.

Step 1: Tighten the adjustment screw

On the side of the lever, there’s a small Phillips or hex screw. Open the lever fully, then turn the screw clockwise ¼ to ½ turn. Close the lever – it should now require firm pressure to close. Test by pushing the pole against the ground. If it still slips, tighten another ¼ turn.

Step 2: Clean the shaft and inside the lock

Dirt or moisture on the inner shaft reduces friction. Extend the pole, wipe the inner shaft with a dry cloth and rubbing alcohol. Also clean inside the outer tube where the lock clamps. Never lubricate these surfaces – they need grip.

Step 3: Inspect for wear

If tightening and cleaning don’t work, the cam or the plastic insert may be worn. Look for cracks in the lever mechanism. Many brands sell replacement lock kits (e.g., Black Diamond FlickLock rebuild kit). Swap out the worn parts.

Fixing a twist‑lock collapse

Twist‑locks are more prone to failure and require disassembly.

Step 1: Disassemble the lock

Unscrew the end cap at the bottom of the outer tube. Pull out the inner shaft. You’ll see a plastic or rubber expander (a split cylinder or cone).

Step 2: Replace the expander

If the expander is crushed, flattened, or hardened, it won’t expand enough to grip. Clean the inner tube, then install a new expander (available from the pole manufacturer or universal kits like LEKI repair kit).

Step 3: Reassemble and test

Slide the shaft back in, screw the cap tight, and twist to lock. The pole should hold firmly.

When to replace the pole

If you’ve tried all fixes and the pole still collapses, the issue may be:

• A dented inner shaft – straightening is unsafe; replace the section.
• Worn anodized coating (shiny aluminum) – the lock cannot grip. New pole needed.
• Cracked outer tube – the pole is structurally unsound.

Prevention tips

• Clean poles after muddy hikes – grit is the number one cause of lock failure.
• Don’t over‑tighten flick‑locks – this can dent the inner shaft.
• Replace twist‑lock expanders every 1–2 years as preventive maintenance.
• Carry a spare flick‑lock screw or a small hex key in your repair kit.

Final thought

A collapsing trekking pole is rarely a death sentence. Most cases are solved by a simple screw turn or a $5 expander replacement. But never ignore a slipping pole – it’s a fall waiting to happen. Fix it before your next hike, and always test both poles with full body weight on a soft surface after any repair.