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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 Shoulder Protectors
Nucleon Plasma Full Chest Protector Hook and Loop
Nucleon Flex Plus Shoulder Protectors
FAQs
Items in this collection are CE-certified impact protectors selected to fit Alpinestars garments that use the J10 armor pocket specification. This typically covers back, chest, shoulder, and elbow inserts shaped to sit flat inside the designated pockets of J10-coded garments.
If your garment label or product page indicates J10 compatibility, choose from this collection to ensure correct pocket geometry. To browse inserts by type across all fits, visit our protectors collections.
Match the insert size to your garment size and pocket type (back, chest, shoulder, elbow). The correct insert seats 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 reach on the bike.
When between sizes, prioritize a secure, flat fit 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 | Impact attenuation | Typical use |
|---|---|---|
| Level 1 | Baseline impact reduction; lighter and often more ventilated. | Urban/commuting and hot‑weather flexibility. |
| Level 2 | Higher impact reduction with stricter force transmission limits. | Touring, sport/track, higher‑speed or long‑distance riding. |
Airbags and passive inserts serve different purposes. Many Tech‑Air® systems 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. After setup, add any chest or limb armor as specified by your garment guidance.
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 preserves material performance and helps the inserts seat correctly after cleaning.
