ALPINESTARS Roost Guard - Bionic Action - XL/2XL 6700421-13XL/2X Universal Powercore 4 Spark Arrestor Muffler Increases starter performance by supplying

Increases starter performance by supplying maximum battery current to the starter motor

tunes and adjusts your air/fuel ratio for peak performance instantaneously Can tune engine fuel delivery in specific ranges

3” diameter rubber plug fits most 1

Waterproof

Winter wind protector is included

ALPINESTARS Roost Guard - Bionic Action - XL/2XL 6700421-13XL/2X Universal Powercore 4 Spark Arrestor Muffler Increases starter performance by supplyingCell Technology chest protector features a highly perforated shell for high levels of ventilation and protection The flexible side adapts to the rider's body shape Features a Cell Technology back protector with a flexion channel for enhanced mobility Removable shoulder pads for high levels of customization Extended padding to offer more protection against tire roost without obstructing arm movement The protectors are perforated for maximum