S Fuels Zone 4 endurance supplement package with pomegranate pack on a dark background

SFuels Zone 4 High Intensity Training and Racing Fuel

Single / Pomegranate Acai

$4.40

SFuels Zone 4 High Intensity Training and Racing Fuel

Name: SFuels Zone 4 High Intensity Training and Racing Fuel
Brand: SFuels LLC
SKU: Z4-PA-SGLE
Price: 4.40 USD
Availability: InStock

Multiple Substrates: Consistent, stable energy without the crash.
Train High-Intensity: Formulated specifically for Zone 4 and Zone 5 threshold efforts.
Zero Fructose: Promotes rapid gut transit and protects gut membrane integrity.
Accelerated Recovery: Infused with Glutamine and MCTs to reduce post-workout muscle soreness (DOMS).

Zone 4

Fructose Free

Gut Resilience

Size

Single

$4.40

Train Carbohydrate Oxidation

Optimize your high-intensity performance. Zone 4 delivers multiple fuel substrates to train your carbohydrate oxidation efficiency at race paces, without blunting your baseline fat-adaptation or triggering GI distress.

Fast-Transit Carbohydrates

Utilizes a precise blend of maltodextrin and highly branched cyclic dextrin for rapid gut transit and stable energy during high-intensity training.

3-Pronged Gut Resilience

A gluten-free, sugar-alcohol-free, and zero-fructose formula. It utilizes select MCT fatty acids and Glutamine to actively nourish the gut membrane and eliminate distress.

Mitigate Muscle Soreness

Powered by SFuels Extended-Substrate™. This precise fusion of 2g L-Glutamine and 2g C8-C10 MCTs taken during your workout drastically lowers delayed onset muscle soreness (DOMS).

Fuel up

How to Use

Maximize your endurance adaptations by executing the right timing.

01

0-60 Minutes (Hold Off)

Avoid all forms of carbohydrates before and during the first 30-60 minutes of your workout. This prevents insulin spikes and maintains your fat-oxidation efficiency.

02

60+ Minutes (Fuel Up)

Start sipping 30-60 minutes into your threshold or interval session. Mix 1 sachet (30g carbs) to 2 sachets (60g carbs) with 16 ounces of cold water per hour of training.

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