ALPINESTARS Nucleon KR-Cell Back Protection Insert - Small 6503919S Aluminum Chain Guide Mount When this muffler is used

When this muffler is used with the Cobra head pipe it requires the use of an optional tapered heat shield

GMS Full System standard no insert (runs better without) at Idle 93db GMS Full System with included sound insert at 4000 rpm 103db

Contrasting drawcords

Patented lightweight and highly-ventilated double-wall knee-cup system offers strong impact force dispersion and absorption while ensuring maximum coverage in all riding positions

Developed for an optimized woman’s fit Ergonomic stretch insert between thumb and palm and on backhand offers flexibility to vastly improve hand movement

ALPINESTARS Nucleon KR-Cell Back Protection Insert - Small 6503919S Aluminum Chain Guide Mount When this muffler is usedSuper lightweight back protector insert in three waist to shoulder dimensions to cover all body sizes Triple segmented back shell plate is constructed from a high performance polymeric material blend for optimized flexibility and excellent weight saving properties Structural design from center towards the outside provides the perfect balance between force dispersion and energy absorption Unique cell microstructure designed for advanced energy