ALPINESTARS SMX-S Boots - Black/White - US 7.5 / EU 41 2223517-12-41 Torsion 79 ft3 Excursion (one way)

79 ft3 Excursion (one way) 50 mm Free Air Resonance 26 Hz Mechanical Factor 2

Drop in and easy to install

150 cubic inches (EU: 18

Large surround with flexible spider packs will help the CCA voice coil maximum Xmax producing full and deep bass with a up to spec box

ALPINESTARS SMX-S Boots - Black/White - US 7.5 / EU 41 2223517-12-41 Torsion 79 ft3 Excursion (one way)Durable microfiber upper construction that has superb flexibility and a comfortable feel Ergonomic new forefront boot shape is streamlined to better control and feel of the motorcycle controls Thermoplastic Polyurethane (TPU) shin plate protector is race developed for superior impact and abrasion resistance Lateral Thermoplastic Rubbery (TPR) injected ankle support construction provides superior comfort and impact resistance TPU double density ankle