The C-Series Fuelling 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 fuelling. Every product delivers consistent 30g carbohydrate increments, making it easy to plan, track, and optimise fuelling for endurance sports.

Maurten’s range uses arbitrary carbohydrate amounts with negligible sodium, forcing athletes to supplement electrolytes separately. Precision Fuel & Hydration’s gels and drink mixes contain no sodium, requiring athletes to supplement with sodium tablets and constantly adjust their plan for each training and racing scenario. Neversecond’s C-Series is built differently. Every product delivers carbohydrate in precise 30g increments with 200mg of sodium per 30g, creating a true system that athletes can trust. This eliminates the need to recalculate or patch fueling plans mid-race. The consistency allows gels, drinks, and bars to be seamlessly combined into a fuelling protocol that is simple, predictable, and scientifically optimised for peak endurance performance.

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.

Yes. C30 Energy Gels are an "isotonic" type and C30 Sports Drink are isotonic at lower densities, which means they can be taken without water and are absorbed quickly. This reduces stomach issues and speeds up carbohydrate delivery.

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.

Absolutely. The C-Series System is designed to be modular. Athletes can combine gels, drinks, and bars to create a personalised fuelling plan based on their carbohydrate target, event duration, and personal preference.

Yes. The C30+ Caffeine Energy Gel provides 75mg of caffeine per gel for an added performance boost when you need it.

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.

Our C-Series range is trusted by World Tour cycling teams, elite triathletes, ultrarunners and Hyrox athletes. It’s designed for anyone—from elite competitors to everyday athletes—looking for science-backed, precise fuelling for training and competition.