ALPINESTARS Supertech R Boots - Black - US 11.5 / EU 46 2220021-10-46 Chrome Billet Aluminum Oil Drain Does not contain catalytic converters

Does not contain catalytic converters

Smooth steel body

Air vent details on lateral and toe area are strategically positioned to improve airflow and ventilation

The cat back silencer slips onto the included mounting kit and uses spring tabs as an added mounting feature alongside the aluminum brackets

ALPINESTARS Supertech R Boots - Black - US 11.5 / EU 46 2220021-10-46 Chrome Billet Aluminum Oil Drain Does not contain catalytic convertersAdvanced microfiber upper construction for lightweight high performance protection and superb levels of flexibility Front flex area is constructed with a soft microfiber for improve abrasion resistance and natural forwards and backwards movement TPU for breathability and airflow Flexible accordion microfiber on Achilles gives enhanced natural movement Strategically positioned ventilation area in heel and shin Outside entry exit has stretchable