The Altitude 3K Carbon Fiber Helmets are our lightest helmets available!  They meet and exceed ECE 2205 safety certification & 3K ECE helmet weight from 1120 grams.


When it comes to high-performance gear, carbon fiber is renowned for its exceptional strength-to-weight ratio and durability. Within the world of snowmobiling and powersports, an advanced variant called Carbon Fiber 3K takes these qualities to a whole new level. Let's explore what Carbon Fiber 3K is and the benefits it offers over regular carbon fiber in helmet construction. 

Carbon Fiber 3K is a specific type of carbon fiber used in the hand lay-up process, where layers of carbon fiber are meticulously laid by hand to form the helmet's shell. The "3K" designation refers to the carbon fiber's weave pattern, with "K" representing "kilo," indicating 1,000 fibers per tow. In the case of Carbon Fiber 3K, each tow consists of 1,000 individual carbon fibers, resulting in an intricately woven and tightly packed structure. 

Among the impressive range of snowmobile helmets offered by 509, two exceptional models feature the remarkable Carbon Fiber 3K construction. The Altitude 2.0 Carbon Fiber 3K Hi-Flow Helmet and the Altitude 2.0 Pro Carbon Fiber 3K Helmet are both crafted with this advanced material, enhancing their performance and reliability. 

Carbon Fiber 3K VS Regular Carbon Fiber: 

  • Strength and Rigidity: Carbon Fiber 3K boasts incredible strength and rigidity, thanks to its tightly woven structure with a higher density of carbon fibers. This results in a shell that can withstand impact forces and provide excellent protection for the rider's head during intense snowmobiling adventures. 
  • Lightweight: Just like regular carbon fiber, Carbon Fiber 3K remains exceptionally lightweight. However, the 3K variant's unique weave pattern contributes to an even lighter shell, reducing overall helmet weight without compromising on strength. 
  • Enhanced Aesthetics: Carbon Fiber 3K's intricate weave pattern offers a distinct appearance that sets it apart from regular carbon fiber. The 3K variant's weave is often smoother and visually appealing, giving helmets an unmistakably premium and high-performance look. 
  • Durability and Longevity: The hand lay-up process used with Carbon Fiber 3K ensures that each layer is carefully applied, resulting in a highly consistent and durable shell. This meticulous construction enhances the helmet's longevity, making it a long-lasting investment for riders. 
  • ECE Rating: It's important to note that helmets utilizing Carbon Fiber 3K, including the Altitude 2.0 Carbon Fiber 3K Hi-Flow Helmet and the Altitude 2.0 Pro Carbon Fiber 3K Helmet, are ECE (Economic Commission for Europe) rated, but not DOT (Department of Transportation) rated. ECE certification is recognized internationally, ensuring helmets meet rigorous safety standards. 

Carbon Fiber 3K is an advanced carbon fiber variant known for its exceptional strength, lightweight properties, and stunning aesthetics. Snowmobile helmets crafted with Carbon Fiber 3K, such as the Altitude 2.0 Carbon Fiber 3K Hi-Flow Helmet and the Altitude 2.0 Pro Carbon Fiber 3K Helmet, provide riders with unparalleled protection and performance. With the added benefits of enhanced durability and a distinct weave pattern, Carbon Fiber 3K elevates the standards of helmet construction, giving riders the confidence to conquer the trails with style and security.