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EVS Sports R4K Youth Race Collar

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EVS Sports R4K Youth Race Collar

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The R4K is a completely reinvented race collar. It 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.


  • Made from a Polyurethane foam base with a reinforced nylon upper shell
  • Lightweight, aerodynamic chassis design
  • Koroyd engineered core for superior impact absorption, it is an extremely lightweight core, consisting of 95 percent air
  • Koroyd structure has extremely efficient and consistent energy absorption properties; the cores decelerate the energy from an impact to reduce final trauma levels
  • The mechanical properties of Koroyd remain stable in extremely hot and cold environments, traditional energy absorbers suffer with reduced energy absorbing capabilities as they become hot and soft or cold and brittle
  • Rapid lock closure system for easy front entry
  • Integrated X Strap cleats

EVS Sports Race Collars & Neck Braces

Youth Adult
Weight (lbs) up to 105 over 105
Height (in) up to 5'3" over 5'3"
Weight (kg) up to 48 over 48
Height (cm) up to 160 over 160

General Sizing information

If you are unsure about your size, compare your body measurements to the charts provided to determine the correct fit. These charts will give you a good idea of the size to order, but be sure to read special sizing information that may accompany an item description. Some merchandise dimensions may vary from the averages charted here.


Model Name for Gear
Age & Gender
EVS Sports

Item Numbers

Details Item Number Availability Store Pickup
Details:White   Item #110-R4K-W-Y Availability:In stock: Ready to shipStore Pickup:Available


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