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This sheet summarizes the information I’ve gleaned from the net on Alpinestars Nucleon Racing KR-HR and Nucleon KR-H Level 1 and 2 hip protectors.

Synthesis: Great coverage, decent ventilation, high price.

Marketing:

4 models at around 30e for level 1, 40e for level 2:

• Nucleon Racing HR-KR (level 2)
  • Hip B
    • Dimensions: 22 cm x 16 cm
    • Weight: ? g
  • Hip A
    • Dimensions: ? cm x ? cm
    • Weight: ? g
• Nucleon HR-K (level 1)
  • Hip B
    • Dimensions: 22 cm x 16 cm
    • Weight: ? g
  • Hip A
    • Dimensions: ? cm x ? cm
    • Weight : ? g

Available all over the web.

Characteristics of the shells:

• Certification:
  • Nucleon Racing KR-HR: Level 2 (not certified T+/T-) ¹
  • Nucleon KR-H: Level 1 (not certified T+/T-) ¹
• Actual protection: ?
• Manufacturing: ?
• Claimed durability: ?
• Material type: Soft viscoelastic, adjusts with body heat
• Ventilation: Good

Note on pant integration (source below):

• C-shaped hip protectors of standard shape and size, they will fit into the pockets provided for (source: Motorcycle Gear Hub);
• Protectors supplied with fabric pockets that can be integrated into pants;
• Protectors and pockets equipped with velcro (but it’s better to sew the pockets to the pants);

Idea: Use as a chest protector :.

Motorcycle Gear Hub indicates that the size and shape allow them to be used as chest protectors, example here: AGV Sport Willow leather jacket - mcgearhub.com

Comfort and comparison with other brands :

Feedback: Compatibility with existing pockets:

The dimensions of the Large-sized pads are […] on point with the universal dimension of the biggest hip pads around (for motorcyclists) and that are also commercialized by the likes of Rev’It, D3O and Oxford. Furthermore, you will find many motorcycle jeans using Level-1 CE-rated generic hip armor that meets these same dimensions — Motorcycle Gear Hub

Feedback: Sewing pockets into pants :

We still recommend that you stitch the pockets (with two rows of threading) into the inside liner of your pant or jacket for further peace of mind. — Motorcycle Gear Hub

Feedback: Use as chest protection :

Incidentally, the KR-HR protectors can also be used as chest armor as I’ve done with an AGV Sport Willow leather jacket — Motorcycle Gear Hub

Photos :

Manufacturer data sheets :

General photos :

HR-KR model (sources revzilla, mcgearhub):

Readings :

• Revzilla video : Alpinestars Nucleon KR Hip Protectors Review at RevZilla.com (2017)
• McGearHub video : Alpinestars KR-HR Hip Protectors Armor Review (Nucleon Level 2) (2017)
• Article : Alpinestars Nucleon KR-HR Hip Protectors Review - Motorcycle Gear Hub