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Discontinued Product!
Alpinestars Nucleon KR-2 Adventure Back Protector (LG and XL) has been discontinued and will not be returning
Replacement Suggestion
Women's Protection
Out of Stock
Alpinestars

Alpinestars Nucleon KR-2 Adventure Back Protector (LG and XL)

Item: P295327
4 Read 4 Reviews 3 Q&As Write a Review

The Nucleon KR-2 is a premium adventure touring back protector that is CE certified Level 2 to the latest back protector standard revision (EN1621-2:2… Read More

$143.96
$159.95
Save $15.99 10%
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Product Details

Alpinestars Nucleon KR-2 Back Protector

The Nucleon KR-2 is a premium adventure touring back protector that is CE certified Level 2 to the latest back protector standard revision (EN1621-2:2014). Extremely lightweight, highly breathable and incorporating reinforced protection this back protector is optimized for comfort on longer journeys. An innovative fusion of energy absorbing viscoelastic memory foam with articulated vertebrae protection. The Nucleon KR-2, a flexible and ergonomically profiled back protector made for performance.

Sizing Info:

Waist to Shoulder Length (in)  KR-2 Protector Size
16 XS
17.25 SM
18.5 MD
20 LG
21 XL

Product Style RevZilla Item # MFR. Product # Availability
Product Style XL RevZilla Item #1012259 MFR. Product #6504615-13-XL AvailabilityOut of Stock: This item is unavailable and will not be coming back in to stock.

Men's Back Protector

Euro Size US Size Alpha Size Chest (cm) Waist (cm) Height (cm)
40-42 30-32 2XS 78-83.5 63-69 157-162
42-44 32-34 XS 83.5-89 69-75 163-168
46-48 36-38 SM 89-94.5 75-81 169-174
48-50 38-40 MD 94.5-100 87-82 175-179
52-54 40-42 LG 100-105.5 87-92 180-184
54-56 44-46 XL 105.5-111 92-97 185-189
58 48 2XL 111-116.5 97-102 190-194
60-62 50-52 3XL 116.5-122 102-107 190-194

Sizing information is provided by the manufacturer and does not guarantee a perfect fit.


How to Measure

  • C Chest
    Measure around the fullest part of your chest, under the armpits, keeping the measuring tape parallel to the ground.
  • H Height
    With no shoes on, stand with your back against a wall and your feet together. Measure from the floor to the top of your head.
  • W Waist
    Measure around your natural waistline, around the top of the hip bones, inline with the navel while keeping the measuring tape parallel to the ground.
Product Description
Part Numbers
Sizing & Fit
4 Customer Reviews
4 5/5
3 Questions & 0 Answers
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