Highly flexible and breathable, the Alpinestars Nucleon KR-3 Back Protector is engineered for maximum performance. Using hard shell backed with a soft viscoelastic PU foam compound, the KR3 achieves both max comfort and extraordinary impact absorption.
- 3 waist-to-shoulder dimensions in order to cover all body sizes
- Lattice-structured back shell plate constructed from a high performance polymeric material blend for optimized flexibility and excellent weight-saving properties
- Soft viscoelastic PU foam compound
- Ergonomic design design to absorb high impacts and allow maximum breathability and air flow
- Nucleon PU foam on the central spine for extraordinary impact absorption performance
- Convex central hard shell provides highest protection for the spine
- Horizontal flex grooves for adaptive fit in all riding positions
- Adjustable rib protector constructed of high performance polymeric material blend for additional side protection
- Shoulder blade protective padding extensions protect the acromion bone
- Waist adjustment for customized fit
- Slim vented kidney belt for added position stability and security
- Adjustable, detachable elastic shoulder straps
- Compatible with the Alpinestars Nucleon KR-C Chest Protectors (sold separately)
- Compatible with the Alpinestars Nucleon KR-TB Protector (sold separately)
- CE certified to EN 1621-2:2014 Level 2
Specifications
| Brand |
Alpinestars |
| Part Number |
6504718-13-XS/6504718-013-XS |
Part Numbers Specification
| Product Style |
Item # |
Store Sku |
MFR. Product # |
| Black/Red / XS |
1242702 |
341503 |
6504718-13-XS/6504718-013-XS |
| Black/Red / SM |
1242703 |
439177 |
6504718-13-S/6504718-013-S |
| Black/Red / MD |
1242704 |
341504 |
6504718-13-M/6504718-013-M |
| Black/Red / LG |
1242705 |
341505 |
6504718-13-L/6504718-013-L |
| Black/Red / XL |
1242706 |
439178 |
6504718-13-XL/6504718-013-XL |
