Alpinestars Nucleon KR-Cell Back Protector Size:XL End caps and collars are

End caps and collars are made from billet aluminum

Ultra-lightweight advanced LG® polycarbonate shell

Compatible with all legacy and new units

Replacement face shield for the Scorpion EXO-AT950 helmet

is to push the technical boundaries by reinventing the motorcycle helmet industry

Alpinestars Nucleon KR-Cell Back Protector Size:XL End caps and collars areFeatures Developed 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