ALPINESTARS Nucleon Flex Proi Full Back Protection Insert - Transparent Smoke/Red - Small 6526323-003-S Pinion 0MM and 9/16-18 are 51MM

0MM and 9/16-18 are 51MM long

Comes with a hard case

JSD8 Product Manual

accessible workspace during range days or cleanings — minus the extra bulk

producing rich and captivating audio across the entire frequency spectrum

ALPINESTARS Nucleon Flex Proi Full Back Protection Insert - Transparent Smoke/Red - Small 6526323-003-S Pinion 0MM and 9/16-18 are 51MMHybrid technology Alpinestars' Nucleon Cell and Flex technologies providing ventilation and flexibility Ergonomically contoured dual zone outer shell Advanced polymeric blend with a solid cell structure core framed by a more flexible 3D cell structure Nucleon Flex technology layer on the central back zone More protection coverage in critical area Lightweight, ventilated and ultra comfortable technology Rigorously tested and certified for proven