ALPINESTARS SMX+ Vented Boots - Black/Red - US 11.5 / EU 46 2221119-13-46 with Efficiency at 4-Ohms: 82%

Efficiency at 4-Ohms: 82%

5" voice coil can handle 300W RMS and 600W max power

Dual density and ergonomic MX derived ankle and heel protector is applied between the upper and padded lining to provide all-round strategic protection and flexibility in key areas

The provided wiring kit will make installation easy and painless

ALPINESTARS SMX+ Vented Boots - Black/Red - US 11.5 / EU 46 2221119-13-46 with Efficiency at 4-Ohms: 82%The SMX Plus v2 Boot perfectly blends sleek sports styling with advanced protection features developed in Alpinestars performance footwear department. The durable and light microfiber upper is reinforced with a rugged polymer protector and the exclusive Multi Link Control (MLC) system prevents ankle torsion while offering freedom of movement. Advanced microfiber upper construction for lightweight high performance protection and superb levels of