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The extremely lightweight Nucleon KR-1 CELL i level 2 protector insert features an articulated back shell plate for flexibility and riding fit
The super-ventilated triple segment Cell Technology back protector is ergonomically engineered for an enhanced adaptive fit
Featuring a patented low-friction coating and a multi-density EPS liner
Lined with insulated fleece
This set includes a precisely body-mapped jersey and high-durability pants for an optimized athletic race fit
racer portl jersey red light gray dark green Color_Green The extremely lightweight Nucleon KR-1Expertly developed for the 2026 collection, the Racer Portl Jersey is Alpinestars' essential off road performance top, engineered for superior mobility on the toughest terrains. Featuring an advanced moisture wicking polyfabric construction with new premium stretch mesh side panels, it delivers optimized breathability and a lightweight feel. The ergonomic pre curved sport fit and extended rear cut ensure maximum comfort and coverage during aggressive