The extremely lightweight Level 2 CE and UKCA certified Nucleon Flex Proi Full Back Protector Insert features a highly ventilated hybrid of Nucleon Cell and Nucleon Flex protectors for the optimum balance of force dispersion and flexibility, with a soft-touch 3D mesh liner for enhanced rider comfort.The back protector insert is a full-length back protector, about 22% longer than regular back protector inserts. The Nucleon Flex Proi is compatible with all Alpinestars� sport and touring jackets that have released since Spring 2022, as all jackets have a double pocket to insert either a regular or longer back protector insert. The goal of the Nucleon Flex Proi is to deliver full-length coverage in terms of protection, like a fixed back protector does, but with the practicality of an insert.Key Features• The super lightweight back protector insert is developed in three waist-to-shoulder dimensions in order to cover all body sizes.• High performance polymeric material Cell and Nucleon Flex structures for optimized flexibility and excellent weight saving properties.• The back protector�s design changes from the center towards the outside providing the perfect balance between energy absorption and flexibility.• Soft comfortable 3D mesh on the body side of the protector offers breathability and rider comfort.• Snap button compatibility for quick and easy use with Alpinestars suits and jackets.• Rigorously tested and certified to for proven performance in extreme temperatures.• Back Protector: EN 1621-2:2014 Level 2 (T+ & T-).

UK Delivery Charges

Free delivery on all orders £100 and over*

All orders over £100 are delivered FREE*. All orders from the Mega Motorcycle Store are dispatched using secure couriers, which are fully insured and trackable. All customers receive an online tracking number when their order is dispatched, enabling them to track the location of their delivery online.

*Free Delivery over £100 includes mainland UK only. Excludes Northern Ireland.

UK Delivery Charges

• Orders under £100: £4.99
• 24-hour delivery: £5.99
• Saturday delivery: £14.99
• Orders over £100: FREE 48-hour delivery
• Refund charge: £2.99

Our UK delivery charges apply to remote areas such as Shetland and the Highlands. For all other destinations, please add your items to the shopping cart on the website and calculate the delivery costs to your destination.

UK Delivery Times

Orders must be placed before 1pm for same-day dispatch.

Please allow 1-2 working days for delivery within the UK.

For deliveries outside the UK, please allow 5-7 working days.

Next working day delivery cut-off time is 13:00.

Orders placed on a Bank Holiday will be dispatched on the following working day. Deliveries to Ireland and Scotland may take an extra day depending on your location.

Orders placed on a Saturday or Sunday will be dispatched on the Monday. If you have paid for Next Working Day delivery, your delivery will be due on the Tuesday.

European Delivery Since 1 July 2021, most goods to the EU (including gifts) are now subject to VAT and potentially a clearance fee. The taxes and duties applied depend on the individual contents of the parcel, the weight, and the value. We cannot estimate the costs that may occur and we are not responsible for any fees you may need to pay.

To get a shipping quote for your country, please follow the checkout process and input your delivery address.

Terms and Conditions:

Express delivery applies to mainland UK only and cannot be guaranteed for the Scottish Highlands and other isolated areas. Please contact us if you need further details.