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The Alpinestars Nucleon KR-2i Back Protector Insert fits all Alpinestars jackets and race suits and delivers CE Level 2 impact protection.
Note: Size MD is recommended for Men's jackets size 50 and smaller and XS-MD. Size LG is recommended for Men's jackets size 52 and larger and LG-4XL. See specific Women's jackets for sizing recommendations.
|Waist to Shoulder (in)||Height (in)||Protector Size|
|15 - 17||56.75 - 64.25||SM|
|17 - 19||64.25 - 71.75||MD|
|19 - 20||71.75 - 76.5||LG|
|Product Style||RevZilla Item #||Manufacturer Product #||Availability|
|SM||973533||6501615-10-S||In Stock: Ships within 24 hours|
|MD||973534||6501615-10-M||In Stock: Ships within 24 hours|
|LG||973535||6501615-10-L||In Stock: Ships within 24 hours|
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We show real-time availability on this product page when you select the size/color item you want. Most items will ship the same business day an order is placed,however if an item requires additional processing time a message will be shown indicating such.
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Doesn't fit or just not happy with it? You can return any new, unused and unaltered item within 30 business days of delivery receipt of your item. We will issue a full refund to your original payment method.
See our full Return Policy for all of the pertinent details.
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