ALPINESTARS NUCLEON KR-1 CELL
New Arrival

ALPINESTARS NUCLEON KR-1 CELL

$219.95
Shipping calculated at checkout.

SKU: 4294-2191-04

Color: TRANSPARENT SMOKE / RED / BLACK
Size: Small
May Be Available For Pickup

Description

The Alpinestars Nucleon KR-1 Cell Back Protector is engineered for riders who demand race-level protection, lightweight comfort, and unrestricted mobility. Built using advanced Cell Technology, this standalone back protector features a high-performance polymeric shell that delivers outstanding impact absorption while remaining flexible and highly breathable. Its ergonomic profile follows the natural shape of the spine, providing a secure fit for sport riding, track days, and aggressive street use.

Designed to perform during demanding rides, the KR-1 Cell incorporates extensive ventilation channels and horizontal flexion grooves that enhance airflow and adapt to different riding positions. Adjustable shoulder straps and a height-adjustable kidney belt ensure a personalized fit, while the extended lower back section provides additional coverage where riders need it most. CE Level 2 certified protection makes the Nucleon KR-1 Cell an excellent choice for riders seeking premium back protection without unnecessary bulk.

  • Protection Level: CE EN 1621-2:2014 Level 2 Certified
  • Construction: Cell Technology polymeric back protector
  • Fit System: Adjustable shoulder straps and kidney belt
  • Ventilation: Highly perforated construction for maximum airflow
  • Coverage: Extended lower back protection design
  • Flexibility: Horizontal flexion grooves for adaptive movement
  • Comfort Liner: Soft Bio-Foam padded chassis
  • Additional Features:
    • Lightweight race-focused construction
    • Ergonomic body-contouring profile
    • Adjustable and detachable shoulder straps
    • Height-adjustable kidney belt with hook-and-loop closure
    • High-performance polymeric material blend
    • Excellent breathability for hot weather riding
    • Compatible with select Alpinestars chest and tailbone protectors

Reviews and Q&A

FAQs

The Nucleon KR-1 Cell is CE EN 1621-2:2014 Level 2 certified, which is the highest certification level for motorcycle back protectors. It is designed to deliver superior impact absorption for track riding, sport riding, and everyday street use.
Yes. The lightweight Cell Technology construction, soft Bio-Foam chassis, ergonomic profile, and adjustable fit system help reduce fatigue and improve comfort during extended riding sessions.
Absolutely. The highly perforated shell and extensive ventilation channels are designed to maximize airflow and heat management, making it an excellent option for warm weather riding and track use.
Yes. The adjustable shoulder straps are detachable, allowing riders to customize the fit and compatibility with different riding gear setups.
The KR-1 Cell is ideal for sport riding, track days, and performance-focused street riding. Its race-inspired design, Level 2 protection, and lightweight construction make it a favorite among riders seeking premium back protection.