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For all-day road riding, the Nucleon Plasma Full Back Protector Insert delivers impact protection with extended lower-back and coccyx coverage inside compatible back protector pockets in Alpinestars jackets and suits, using flexible, ventilated Nucleon PLASMA technology to support freedom of movement and lasting comfort.
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51 ratings
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Fits well into my DuskAirflow size 54 Nothing to complain about, it sits tight to my body, feels good, never uncomfortable and i rode a few 100km on it already. Recommend!
A
Alexander · September 26, 2026
Si adatta perfettamente alle mie due giacche estiva e invernale
R
Roberto · October 31, 2026
I bought it for the GP Plus R Airflow V4 Jacket and you simply don't notice that you have a protector inside