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Nucleon Plasma Back Protector Insert
Nucleon Kr-Celli Back Protection Insert
Nucleon Plasma Full Back Protector Insert
Nucleon Flex Proi Full Back Protector Insert
Nucleon KR-1 Cell i Back Protector
Nucleon Flex Pro Elbow Protectors
Nucleon Flex Pro Shoulder Protectors
Nucleon Plasma Full Chest Protector Hook and Loop
FAQs
Items in this collection are CE-certified impact protectors selected to fit Alpinestars garments that use the J13 armor pocket specification. This typically covers back, chest, shoulder, and elbow inserts shaped to sit flat inside the designated pockets of J13-coded garments.
If your label or product page indicates J13 compatibility, choose from this collection to ensure correct pocket geometry. For broader browsing by protector type, see our protectors collections.
Match the insert size to your garment size and pocket type (back, chest, shoulder, elbow). The correct insert should seat fully in the pocket without folding, gaps, or pressure points; for back inserts, coverage should extend from the upper back toward the lumbar area without restricting movement.
If you are between sizes, prioritize a secure, flat fit inside the pocket over maximum length. Refer to the size chart on each protector’s product page and your garment’s inner label for final confirmation.
Motorcycle protectors are independently tested to EN 1621 standards: EN 1621-1 for limb armor (shoulder, elbow, hip, knee), EN 1621-2 for back protectors, and EN 1621-3 for chest protectors. Labels on each protector indicate the specific standard and level.
| CE Level | Typical Use | Impact Transmission |
|---|---|---|
| Level 1 | Everyday/urban where flexibility and airflow are prioritized. | Higher allowed force transmission vs. Level 2. |
| Level 2 | Touring, sport/track, or riders seeking higher attenuation. | Lower allowed force transmission (stricter threshold). |
Airbag systems and passive inserts serve different purposes. Many Tech‑Air® vests include an integrated back protector and require specific garment clearance. Depending on the setup, you may be instructed to remove certain jacket inserts to avoid stacking components.
Confirm your pairing using the Tech‑Air® compatibility checker, then explore available systems in Tech‑Air® systems and select any additional chest or limb armor as needed from protectors.
Yes. Always remove all armor and electronic components before cleaning the garment. For most textiles, close zips/Velcro and machine wash cold on gentle only if the care label permits, then air dry away from heat. Leather should be spot‑cleaned and conditioned; do not machine wash or tumble dry leather.
Clean protectors separately with a damp cloth and mild soap, then let them dry flat before reinserting. Proper care maintains material performance and helps the protectors seat correctly after cleaning.
