First Endurance EFS-Pro High Carb Bicycle Nutrition Drink MixesThe EFS PRO redefines whats possible with high carb fueling. First Endurance completely redesigned formula makes consuming more carbs per hour easier than ever while prioritizing stomach comfort. And with a clinically effective dose of electrolytes, EFS PRO keeps you fueled, hydrated and energized, even in the most demanding conditions.

Road cyclists who want a rigid

Large steel pump body is optimized to efficiently and easily achieve the higher pressures that low volume bike tires need

crushing personal goals

Mountain bikes

With its QL2

Micro-Adjust Air-Bleeder: This allows for fine-tuning with 2-3 PSI adjustments

Separate control unit enables safe operation without moving your hands from the handlebars

Made of cast and machined 6061-T6 aluminum or stainless steel

The XX T-Type AXS Transmission groupset delivers the perfect balance of strength and lightweight performance—built to handle intense enduro rides while keeping weight in check

Universal Compatibility: Acts as the of cross-platform utility

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Integrated Protection and Specialized Hardware