ALPINESTARS ST-1 WP Jacket - Black - 4XL 3200625-10-4XL Chain or add an external amplifier

or add an external amplifier for extreme power and maximum loudness immediately

Outsole has an asymmetric stud configuration which provides excellent levels of grip and high abrasion resistance

Efficiency at 4-Ohms: 80%

Adjustable bass boost from 8-12dB with included Level control knob for on-the-go volume changes

Abrasion Clip-on Flat Hook is Shaped to Optimize the Web Radius Under Strap Tension

ALPINESTARS ST-1 WP Jacket - Black - 4XL 3200625-10-4XL Chain or add an external amplifierAll weather, waterproof construction and crafted for ergonomic mobility Detachable waterproof, thermal liner to help keep the rider warm and comfortable Front vent panels on the chest provide cooling airflow, improving breathability and comfort Redefined, modern shoulder design with Alpinestars stylish branding gives the jacket an adventure touring inspired look Pre curved arms and ergonomic elbows for excellent freedom of movement Detachable liner