Review: SIS Beta Fuel Dual Source Energy Chews

The SIS Beta Fuel Dual Source Energy Chews are halfway between a bar and a gel. They provide an easy-to-eat energy boost and can be combined with other Beta Fuel products to maximize carbohydrate intake. The price, however, could limit their use to the most difficult rides.

One of the best things about long winter hikes is a bag of candy for me. The extra space for the jacket means there’s room for Jelly Babies, Haribo, Dolly Mix or – occasionally – a selection of all three. Always a fan of a tasty bike snack, I was very keen to try them and I was not disappointed.

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It’s a tasty way to quickly consume 46g of carbohydrate. It’s good for the stomach and pairs well with other Beta Fuel products, although at £ 2 per serving they’re a rather expensive option.

SIS recently refreshed the Beta Fuel line and, along with a sophisticated new look and a few other products, they offer a new 1: 0.8 ratio of glucose to fructose. This, according to SIS and this study, is the key to getting more of these all-important carbohydrates to your hungry little legs. Either way, there’s no horrible taste here, which makes them easy to eat when you need them.

Beta max.

Jamie has reviewed the new Beta Fuel gels before, and he found the amount of energy delivered to be very beneficial in racing. This applies to any high intensity ride, and during my training for the climbing season (and for pre-race refueling) I used the chewing gum.

What I like – and Jamie said the same thing – is that it is very convenient to eat less for a given amount of energy. As long as I was taking one of those chews with an energy drink bottle, I was fine to work my way through a grim number of intervals.

Injected fuels

Each serving of Energy Chew brings you 190 kcal and 46 g of carbohydrates, including 41 g of sugar. For comparison, the Enervit Pre Sport Jelly contains 27g of carbohydrate, although it is designed as a slower energy release. Skratch Labs Sport Energy Chews are getting close to 40g of carbs per bag, but the biggest carb price per pack still goes to Clif with his 48g Shot Bloks.

The main difference, however, is that SIS chews are designed to be absorbed with other SIS Beta Fuel products and contain up to 120g of carbohydrate per hour.

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SIS says working out up to 80-120g of carbs per hour will give you optimal fuel for the toughest rides but (again like Jamie) I find it hard to hit over 100g per hour. hour – I just can’t constantly throw energy products down my neck. At least with Beta Fuel chews, drinks, and gels I’m avoiding stomach issues.

There are a couple of things I would change. First, you get two strips of jelly. It is practically impossible to access a single strip while driving, so I would like SIS to just combine them into one block. Then the second thing is that very occasionally you find a bit of crispy jelly. I imagine it’s just a little bit of undissolved sugar, but it’s not the most enjoyable.


These are quite expensive, but not the most expensive. These Clif Shot Bloks will set you back £ 52 for a box of 18, while Beta Fuel chews cost £ 40 for 20. This makes Beta Fuel more profitable and, to get big carbs in a short time, I J ‘ would have the SIS offer due to the glucose / fructose ratio of 1: 0.8.

Beta Fuel Energy Chews are a great fueling option for high intensity driving. The texture is a nice bridge between a gel and a bar, they pair well with other Beta Fuel products, and they’re easy to swallow between efforts.

The only thing is the price – while it’s reasonable for performance, it’s still high at £ 2 per serving, which means they’re probably best kept for very difficult journeys.


Great for maximizing carbohydrate intake, tasty and easy to eat – if not the cheapest

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Brand and model : SIS Beta Fuel Double Source Energy Chews

Tell us what the product is for and who it is for. What do the manufacturers say? How does that compare to your own feelings about it?

From SIS: “Our Beta Fuel Dual Source Energy Chews provide scientifically superior fuel in unique and satisfying chews. Part of a full line of world famous refueling solutions that includes drinks and gels, they are very easy to consume and provide 46 grams of carbohydrates to improve and maintain peak performance.


A 1: 0.8 ratio of glucose to fructose increases the percentage of ingested carbohydrates that are oxidized (called efficiency) from 62% to 74% compared to a 2: 1 ratio

A 1: 0.8 ratio of glucose to fructose reduces self-reported symptoms of stomach fullness compared to a ratio of 2: 1 “

Tell us a little more about the technical aspects of the product?

Typical values ​​per portion 60g

Energy 317kj / 190kcal

Fat 0.0g

of which saturates 0.0g

Carbohydrates 46g

of which sugar 41g

Fiber 2.2

Protein 0.0g

Salt 0.11g

Rate the product for build quality:


Rate the product for its performance:


Evaluate the product for its value:


They are expensive, but earn it with their performance.

Tell us how the product performed overall when used for its intended purpose

Very good energy boost and good for the stomach, even pushing 90g of carbohydrates per hour.

Tell us what you particularly liked about the product

They taste great which makes me more likely to eat the food on my commute.

Tell us what you didn’t particularly like about the product

I found a crunchy chunk or two of undissolved sugar.

How does the price compare to similar products on the market, including those recently tested on

They are quite expensive, although a good price for what they contain.

Did you enjoy using the product? Yes

Would you consider purchasing the product? Yes

Would you recommend the product to a friend? Yes

Use this box to explain your overall score

If you’re trying to maximize your carbohydrate intake for rough journeys, constant freezes can be dull. This is another great way to refuel, they taste great and can be combined with other Beta Fuel products.

Age: 27 Height: 177 cm Weight: 62kg

I usually drive: Specialized S-Works Tarmac SL7 My best bike is:

I have been driving since: Less than 5 years I ride: Most days I would classify myself as: Expert

I regularly do the following types of riding: road racing, time trial, cyclo-cross, commuting, club rides, general fitness riding, I specialize in Cafe Ride!

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