Alpinestars SP-X BOA Boots — EU 43, Mid-calf, Black

The SP-X BOA is a sleek sport boot engineered to fit under technical riding pants while offering superior walking capability. Optimized for the sport and sport-touring rider, these compact mid-height boots deliver premium protection and comfort both on and off the bike.

The upper blends Rideknit® material and knitted mesh with seamless thermo-welded panels for flexibility and abrasion resistance. The lower features a TPU heel counter, toe slider, and a Transversal Protection Frame (TPF) built into the sole to resist impacts and prevent unwanted bending or twisting.

An asymmetric rear heel and redesigned sole promote a natural stride and improved off-bike stability. Protective elements include an integrated shin impact protector, dual-density ankle discs, plus TPU shift pad and toe slider reinforcement. Comfort is enhanced by knitted flex zones, a PU midsole with an integrated double-cushioned heel compound, and a removable OrthoLite® insock for excellent walking comfort.

Entry and exit are quick and precise thanks to a medial zipper combined with the BOA speed-lace system for compact, adjustable closure. Perfect for riders who want substantial coverage and protection without the full race-boot, over-the-pant look.