Alpinestars Bionic Roost Guard

Item # : 639505
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$214.95 - $229.95
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                  Alpinestars Bionic Roost Guard

                  Item # 639505


                  Alpinestars Bionic Chest Protector

                  The versatile and modular Bionic Chest Protector incorporates Level 1 CE certified protection on the back, chest and shoulders. With hard shell protector plates and soft bio foam interior padding, the Bionic Chest Protector is extremely comfortable, with a lightweight design that allows for high levels of breathability and airflow.


                  • Protector plates feature embedded grid technology under the shells which absorbs and dissipates impacts forces.
                  • Grid technology cell system enables greater flexibility and air ventilation while allowing for significantly reduced weight.
                  • Soft touch BNS puller for convenient and safe engagement of the BNS.
                  • Modular design means protector can be worn in various configurations allowing rider to use in different riding situations.
                  • Soft bio foam padded chassis for maximum comfort and personalized, close-to-the-body fit.


                  • Protector plates are CE certified.
                  • Back protector is CE certified according with the EN 1621-2:2014 Level 1.
                  • Chest protector is CE certified according with the prEN 1621-3:2016 Level 1 Full Chest Protector.
                  • The Shoulder Protectors are CE certified according to EN 1621-1:2012 Level 1.


                  • Hard shells are constructed from a high performance polymeric material blend for optimized flexibility and excellent weight saving properties.
                  • Shells feature perforation zones and air channeling for excellent breathability and ventilation.
                  • Removable upper back padded panel for BNS compatibility.
                  • Side adjustable kidney belt allows for various fit sizes and ensures protection remains close the body at all times.
                  • The front side wings are connected to the main chest protector with three bridge fixings allowing the wings to move independently and take the shape of the body.
                  • The thermoformed side padding offers superb rider comfort whilst also protecting the lower ribs against injury.
                  • The shoulder protectors are adjustable to allow for different shoulder widths and can also be removed if required.

                  Comparison Chart

                  Model A-1 Plus Sequence Bionic A-4 A-10
                  Starting at $185 $190 $215 $240 $300
                  Material Polymer blend Thermoformed textile, mesh Polymer blend Polymer blend Polymer
                  Key Features

                  Removable protectors

                  Adjustable shoulder straps

                  Soft bio foam padded chassis

                  Highly abrasion resistant

                  Embedded grid technology

                  Highly adjustable

                  Thermoformed kidney protection

                  EVA extension at back

                  Embedded grid technology

                  Quick release attachment

                  Protection Good Good Better Good Best
                  Flexibility Better Best Good Better Good
                  Airflow Better Better Good Best Good

                  Bionic Neck Compatible

                  Certification CE certified

                  CE certified chest

                  CE level 1 back

                  CE Level 1 back, chest, shoulders

                  CE certified chest

                  CE level 1 back

                  CE Level 2 chest & back

                  CE Level 1 shoulders

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                  What is the back panel length and width of the M-L size?

                  Asked by: Cole
                  Here is the manufacturer's size guide:
                  Answered by: Katia
                  Date published: 2019-12-02
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