LEKI have various different locking systems on their Telescopic poles:

CLASSIC

The earliest adjustable locking system that LEKI used on trekking poles. It is simple, durable and very effective and featured on selected poles in the LEKI range up to 2015

The hard plastic expander screws on to a threaded alloy spike which pushes the sides of the expander out to grip the inside of the tube.

The expanders are very durable, but can wear down after many years of regular use, meaning more effort has to be put in to tightening the pole. If the inside of a pole section has corroded, with a build-up of lots of white oxide powder, then obtaining a Leki Brush Set to clean this off is likely to be more effective than new expanders alone.

Most poles have two expanders with the middle and lower section of the pole being different sizes. Standard and Ultralight poles use different sizes of expanders so be sure to identify your pole type before ordering. You will find expanders here

Super Lock System (SLS)

Along with the earlier almost identical Easy Lock System (ELS), this uses a two-part expander system with an inner wingnut (also sometimes known as a "Rocket" due to its shape) and an outer soft plastic expander. The expander is pushed out against the insides of the pole tube by the wingnut travelling up the threaded centre screw. The thread used is much finer than the thread of the Classic system which, in combination with the softer expander means the pole can be locked firmly in place without much effort being used. This is of real benefit for cold or weak hands.

The expanders, being softer, do wear a little quicker than the Classic expanders, but they should still last many years. Old expanders can easily be removed thanks to the split down one side. It is easiest to simply push the new expander down on to the screw from the top.  You can find new expanders here.

The central screw is fixed in to place and cannot be unscrewed from its mount in the end of the pole section. If the locking system no longer functions due to the thread on the red plastic wingnut having been stripped (usually due to corrosion or over tightening) a repair is possible with a Split Wingnut Rocket Repair. This repair is a little fiddly, but the only other option is to replace the entire pole section.

Speedlock is our external locking system.  As the name implies, this is a quicker and easier system to adjust the pole length, and secure the sections in place, than the internal SLS device.  You can find replacement Speedlocks here.

Original Speedlock (or Speedlock 1) - The external lever is used to clamp the external plastic collar on to the section inside the collar. This is unlike other external lever locking systems which clamp the aluminium tube on to the next section with the tube having a split near its end (this results in a lower holding force because the stiff aluminium tube has to be squashed inwards).

Speedlock 1 levers can be replaced if they have become damaged. Care should be taken to get the correct size of lever as a smaller lever will not stay locked and longer levers will stick out when closed and not sit flush with the collar.

Speedlock 2 - This external lever locking system features an enhanced alloy locking collar. This allows the locking system to produce a higher holding force. It was developed due to the demands of more athletic adjustable pole users, such as mountain runners and Elite Nordic Walkers, for a quick external locking system that would hold even during their more aggressive pole use. The original Speedlock systems will hold a minimum of 75kg which is more than enough for any trekking user (and is 50% greater than most rival makes); Speedlock 2 holds a minimum of 95kg.

Speedlock 2 levers can be replaced. Care should be taken when identifying the Speedlock version; the levers are not interchangeable.

Speedlock Plus and Speedlock 2+ - As above but a special tool is required to replace the lever.