Our C-Series fueling system is a complete, science-first solution designed to help endurance athletes fuel smarter and perform longer. Built around consistent 30g carbohydrate increments with a proven 2:1 glucose-to-fructose ratio, every product—C30 Energy Gels, C30 Sports Drink, C90 High Carb Mix, and more—fits seamlessly together for precise, personalized fueling. With added sodium for hydration balance, isotonic absorption, and Informed Sport certification, the C-Series delivers the most efficient, customizable fueling system for endurance performance.
Fueling isn't a guessing game.
It's a numbers game.
All Neversecond C-Series products are designed to work together, so you can mix and match products according to your preference or practicality. Since all C-Series products use 30-gram increments of carbohydrate and 200mg of sodium per 30g of carbohydrate, you can calculate and perfect your easier than ever before. Whether dialing in your race day nutrition or improving the quality of your training sessions, we make the fueling and hydration part fool-proof.
Neversecond C-Series Fueling System: Precision Sports Nutrition for Endurance Athletes
The C-Series System: Fueling Has Finally Evolved
Sports fueling has often been fragmented—different products with different nutrient values, leaving athletes guessing. Neversecond’s C-Series System solves this problem with a complete, modular line of fueling products designed for precision and simplicity. Built on cutting-edge sports science and elite athlete feedback, the C-Series delivers a seamless way to fuel training and racing across endurance sports.
Scientifically Proven Modular Carbohydrate System
Every product in the C-Series—whether it’s C30 Energy Gels, C30 Sports Drink, C90 High-Carb Mix, or C30 Fuel Bars—delivers carbohydrate in consistent 30-gram increments. Using a 2:1 maltodextrin-to-fructose ratio, the system supports very high carbohydrate intake (up to 120g/hr) while minimizing the risk of gastrointestinal distress. Each serving also includes 200mg sodium per 30g carbohydrate, ensuring optimal hydration and fluid retention.
Designed for Endurance Athletes, Backed by Science
The C-Series was developed through more than 25 years of collaboration with world-class endurance athletes, coaches, and sports scientists. Every detail—carb composition, isotonic texture, flavor profile, sodium balance, caffeine options—was carefully refined to match the real demands of cycling, running, triathlon, trail, and hybrid races like Hyrox. This is fueling engineered not just in the lab, but proven in the world’s toughest events.
Easy Absorption, Zero Guesswork
Unlike traditional sports nutrition products with inconsistent serving sizes, the C-Series is designed for easy math and fast absorption. Athletes can fuel with confidence: one gel = 30g carbs, one drink serving = 30g carbs, one bar = 30g carbs. The isotonic nature of the gels and drink mixes means they can be taken with or without water, reducing the risk of stomach issues and allowing athletes to focus fully on performance.
One System, Unlimited Flexibility
Whether you’re a cyclist targeting 90g/hr, a triathlete managing long-course fueling, or a trail runner needing portable options, the C-Series System makes fueling simple and adaptable. Products can be mixed and matched—gels with drink mix, bars with high-carb powder—to create a personalized fueling plan for any duration or intensity. That’s why professional teams, Ironman champions, and ultrarunners trust the Neversecond C-Series: it’s the only system built to Fuel Your Win.
What is the Neversecond C-Series Fueling System?
The C-Series Fueling System is a complete range of sports nutrition products—C30 Energy Gels, C30 Sports Drink, C90 High-Carb Mix, and C30 Fuel Bars—designed for precision fueling. Every product delivers consistent 30g carbohydrate increments, making it easy to plan, track, and optimize fueling for endurance sports.
Why is the C-Series different from other sports nutrition brands?
Unlike many sports nutrition products with inconsistent carb values, the C-Series System is modular. Each serving provides 30g of carbohydrate + 200mg sodium, which allows athletes to fuel with precision and combine products without guesswork.
How much carbohydrate can I take per hour with C-Series products?
With the 2:1 maltodextrin-to-fructose blend, athletes can safely consume up to 120g of carbohydrate per hour using the C-Series System. This supports high-intensity performance while reducing the risk of gastrointestinal distress.
Which C-Series products are best for cycling, running, triathlon, or Hyrox?
Cycling: C30 Energy Gels and C90 High-Carb Mix for long rides. Running/Trail: C30 Energy Gels and C30 Fuel Bars for portability. Triathlon: C30 Sports Drink and C30+ Caffeine Gels for long-course events. Hyrox/Functional Fitness: C30 Energy Gels for fast, convenient energy mid-workout.
Are Neversecond C-Series products isotonic?
Yes. C30 Energy Gels and C30 Sports Drink are isotonic, which means they can be taken without water and are absorbed quickly. This reduces stomach issues and speeds up carbohydrate delivery.
How does sodium in the C-Series help performance?
Each serving of a C-Series product contains 200mg of sodium per 30g of carbohydrate, which helps improve fluid absorption, prevent dehydration, and maintain electrolyte balance during endurance events.
Can I mix and match C-Series products?
Absolutely. The C-Series System is designed to be modular. Athletes can combine gels, drinks, and bars to create a personalized fueling plan based on their carbohydrate target, event duration, and personal preference.
Do C-Series products contain caffeine?
Yes. The C30+ Caffeine Energy Gel provides 75mg of caffeine per serving for an added performance boost. Athletes can combine caffeine and non-caffeine options to match energy and focus needs.
Are C-Series products tested for banned substances?
Yes. All Neversecond products, including the C-Series range, are Informed-Sport certified, ensuring they are safe for professional and amateur athletes competing under anti-doping rules.
Who uses the Neversecond C-Series Fueling System?
The C-Series is trusted by WorldTour cycling teams, Ironman triathletes, ultrarunners, and Hyrox athletes. It’s designed for anyone—from elite competitors to everyday athletes—looking for science-backed, precise fueling for training and competition.
Stlll unsure?
Start your journey.
Try our C30 Starter Pack and get on your way to better fueling and better performance.
