ALPINESTARS SP-X BOA Boots - Black - EU 40 2222024-1100-40 Piston Kit Force™ Velocity Stack for a

Force™ Velocity Stack for a strong increase in power

Made from high-carbon content stainless steel

120" (3 mm) 4130 chromoly construction

Plug prevents dirt and moisture from collecting in your exhaust pipe

98% Cotton / 2% Polyurethane Stretch twill main fabric 3D Linear logo embroidery

ALPINESTARS SP-X BOA Boots - Black - EU 40 2222024-1100-40 Piston Kit Force™ Velocity Stack for aSP X boots are a sleek sport boot designed to fit under tech riding pants and provide superior walking capability Optimized for the sport and sport touring rider, the SP X are compact, mid height boots with premium levels of protection and comfort on and off the bike The upper is constructed from a combination of Rideknit material and knitted mesh, plus seamless thermo welded parts The lower features a TPU heel counter, toe slider, and the Alpinestars