No longer the redheaded stepchild of the boot business, K2 puts a lot of thought into their boots.
As with any really new products, there has been a learning curve. The boot development team at K2 are quick studies.
K2 made adjustments to the liners-there is less bulk to the pre-padding from mid-foot through heel. The liners are still Intuition style, with proprietary K2 modifications. Because of this, the liners need to and should be toasted for try-on.
There were a few problems with toe pieces disintegrating after a short time but that has been addressed.
The Spyne 110 (men’s) and Spyre 100 L (ladies) will return to our shelves, both in 100mm.
Their E3-Energy Efficient Engineering, Energy Interlock and Powerfuse Spyne combine to create unique functional parameters.
From the ground up K2 bypassed conventional methodology in developing high performance ski boots, normally entailing “de-tuning” the chassis of a full race boot for general consumption.
This is not to say that everyone else has been doing it wrong, we all have and/or currently ski on boots constructed this way, it’s more that K2 wanted a fresh approach to distinguish themselves from other boot makers, thus the development of the E3 concept.
The Powerfuse Spyne and Energy Interlock are unique in ski boot construction.
The Powerfuse Spyne is the external V shape at the rear cuff and lower and the Energy Interlock is what connects the lower and cuff via what amounts to a mortise and tenon. This vectors the forces through a broader area of the posterior of the shells producing a progressive and smooth flex range. Seems to work!
On snow the Spyne/Spyre perform well, balancing power, precision and compliance. Forward flex is very fluid and well-defined, lateral stiffness is rock-solid.
The stance is in keeping with the current standards; in general all boot makers adhere to contemporary stance requirements.
On snow feel is superb-underfoot feedback is accurate and input is direct.
Both the Spyne and Spyre have relief points for the navicular, good forefoot contour and toe box room.
Instep height initially feels a bit on the low side. In past models there seemed to be an excess of material throughout the liner and in the tongue. As previously stated, K2 has reduced the amount of padding throughout the liners.
The K2 lineup is clean and straightforward.
All imagery provided by the wonderful folks at K2.