Adult R4K Race Collar Adult R4K Race Collar
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Adult R4K Race Collar


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Product Description

The R4K features a revolutionary Koroyd® core with superior impact absorption and a reinforced nylon upper shell. The chassis has been completely redesigned to be lighter and more aerodynamic. In an impact, the head is pushed down on the race collar. The R4K effectively fills the gap between your helmet and shoulder with Koroyd, which absorbs impact energy better than standard race collar materials.

  • Koroyd engineered core for superior impact absorption
  • Reinforced nylon upper shell
  • Lightweight, aerodynamic chassis design
  • Rapid-lock closure system for easy front entry
  • Integrated X-Strap cleats
  • Polyurethane foam base
  • Weight: 498 g
  • Fits riders over 105 lbs., 5’3”