ALPINESTARS Nucleon Flex Pro Protection Vest - Black/Red - XS 6508123-009-XS Speedster Dual Exhaust System Plugs the exhaust sensor port

Plugs the exhaust sensor port on models that do not require an O2 sensor

Stepped 1-3/4” to 1-7/8” headpipes

Reflective sandwich visor

Back upper viscoelastic foam protects the coccyx and pelvic bones

Ultra-lightweight

ALPINESTARS Nucleon Flex Pro Protection Vest - Black/Red - XS 6508123-009-XS Speedster Dual Exhaust System Plugs the exhaust sensor portBack Protector Ergonomically contoured dual zone outershell Advanced polymeric blend with a solid cell structure core Solid cell core framed by a more flexible 32 cell structure Nucleon Flex technology layer on the central back zone Divided Chest Protector Unique new longer length for more protection coverage in critical area Lightweight, ventilated and ultra comfortable technology Rigorously tested and certified for proven performance in extreme