Alpinestars Nucleon KR-3 Back Protector - Black/Red Medium (Part Number 6504718-13-M)

The Alpinestars Nucleon KR-3 Back Protector is designed to deliver maximum impact absorption and comfort for motorcycle riders seeking advanced protection. Constructed with a high-performance polymeric lattice structure that adapts to various body sizes, this back protector offers an ergonomic fit that ensures consistent comfort during extended rides. The lightweight design features a soft viscoelastic polyurethane foam (PU) compound that provides excellent weight-saving properties while maintaining durability and impact resistance. Its innovative one-piece injected lattice shell enhances flexibility and airflow, promoting breathability in hot riding conditions. The central spine area is reinforced with Nucleon PU foam to absorb shocks more effectively, while an additional convex hard shell design offers superior spinal protection against impacts. Horizontal flex grooves are integrated into the shell, allowing the protector to conform closely to the rider's movements and riding positions for a more comfortable experience. The adjustable waist strap and slim, vented kidney belt provide a secure, personalized fit that maintains stability without sacrificing mobility. The shoulder straps are detachable and adjustable via a snap-fit system, ensuring a snug, comfortable fit across various body shapes. Additional features include shoulder blade padding to protect the acromion bones and an adjustable rib protector made from the same high-performance polymer blend for side impact defense. Compatibility with Alpinestars' Nucleon KR-C and KR-TB protectors allows for modular upgradeability and enhanced coverage. Overall, the Nucleon KR-3 back protector combines innovative materials and thoughtful design for riders who demand high-level protection, comfort, and breathability on the road or track.

Features:

• High-performance polymeric lattice back shell for flexibility and weight savings

• Soft viscoelastic PU foam compound for impact absorption and comfort

• Single injected lattice structure shell with ergonomic design

• Nucleon PU foam on central spine for additional impact protection

• Convex design on hard shell provides enhanced spinal safety

• Horizontal flex grooves enable adaptive fit in all riding positions

• Adjustable waist and slim vented kidney belt for a customized, secure fit

• Detachable elastic shoulder straps with snap-fit system for comfort

• Shoulder blade padding extensions protect acromion bones

• Compatible with Alpinestars Nucleon KR-C and KR-TB protectors for modular upgrades

ATTRIBUTES:

BRAND: ALPINESTARS

MPN: 6504718-13-M