The Alpinestars Tech 1-KZ Kart Boot in Fluorescent Yellow, SKU 271-3018-17-GSM, is a single-size clearance listing of a previous-generation CIK-compliant karting boot. This specific listing is available in EU 43 only (UK 9 equivalent) and in fluorescent yellow only. It does not carry the current FIA 8877-2022 approval; it was produced under earlier CIK regulations.
The Tech 1-KZ uses an asymmetric instep lacing system with strategically placed perforated ventilation zones across the upper. The anatomical profile of the boot is slim throughout the toe box and instep, following the shape of the foot without the additional material width that a wider last produces. External heel, ankle, and internal toe reinforcements protect the foot at the key impact points without adding bulk to the areas where pedal contact occurs.
The rubber sole is developed for maximum pedal sensitivity: thin, non-cushioned, and flexible across the forefoot while maintaining enough structure at the heel to provide stable braking support. The construction uses F1-tested technology in its sole geometry, with the sole profile matching the natural flexion axis of the foot at the metatarsal head during pedal transition.
Because this listing is EU 43, fluorescent yellow, and limited stock only, it is suitable for a driver who specifically fits EU 43 and wants this colourway. Drivers looking for a full size run of current FIA 8877-2022 certified karting boots should see the Tech 1-KX V3 or the Supertech K, both of which run from EU 37 to EU 47.
