ALPINESTARS Nucleon KR-Cell Back Protector - Large 6504018-13-L Replacement Boot Toe Sliders — SMX-4/SMX-S/SMX-2/SMX-6 v2 Gore-Tex®/SMX-R/Supertech R PB-SNC2 Shell — Z Resin

PB-SNC2 Shell — Z Resin developed and blended in-house

Each spring is cold coiled then heat treated

Functional pockets to store tools

Next level control-hand operation of the rear brake provides a more tactile feel than a stiff boot

Stretch cuff for fit with a strap closure for security

ALPINESTARS Nucleon KR-Cell Back Protector - Large 6504018-13-L Replacement Boot Toe Sliders — SMX-4/SMX-S/SMX-2/SMX-6 v2 Gore-Tex®/SMX-R/Supertech R PB-SNC2 Shell — Z ResinDeveloped in three waist to shoulder dimensions in order to cover all body size types Back hard shell plates are constructed from a high performance polymeric material blend for optimized flexibility and excellent weight saving properties Shells are highly perforated for maximum breathability and air ventilation Single injected compound shell constructed with triple layer design to absorb impacts and allow maximum airflow Ergonomic protector plate