A single black SIS Beta Fuel energy chew bar in orange flavor, shown horizontally against a light gray background.
A single black SIS Beta Fuel energy chew packet in Lemon flavor, displayed horizontally against a light gray background.
Man eating an orange outdoors with a blurred green background
Cyclist wearing a helmet and sunglasses eating an orange snack.
Cyclist eating an energy bar outdoors
A black rectangular box of Sis Beta Fuel energy chews, labeled Orange, shown at a three-quarter angle on a light gray background.
A black rectangular box of SIS Beta Fuel energy chews, lemon flavor, shown at a three-quarter angle on a light gray background.
A display box and individual packet of SIS Nutrition Beta Fuel snack bars on a light gray studio background.
A black display box of SIS Beta Fuel energy chews, showing multiple individual black energy chew packets inside and on the front panel, set against a light gray background.
A single black SIS Beta Fuel energy chew bar in orange flavor, shown horizontally against a light gray background.
A single black SIS Beta Fuel energy chew packet in Lemon flavor, displayed horizontally against a light gray background.
Man eating an orange outdoors with a blurred green background
Cyclist wearing a helmet and sunglasses eating an orange snack.
Cyclist eating an energy bar outdoors
A black rectangular box of Sis Beta Fuel energy chews, labeled Orange, shown at a three-quarter angle on a light gray background.
A black rectangular box of SIS Beta Fuel energy chews, lemon flavor, shown at a three-quarter angle on a light gray background.
A display box and individual packet of SIS Nutrition Beta Fuel snack bars on a light gray studio background.
A black display box of SIS Beta Fuel energy chews, showing multiple individual black energy chew packets inside and on the front panel, set against a light gray background.

SiS

SiS BETA Fuel Energy Chews

£2.50 £1.99 Sale

Chewable endurance fuel with approximately 45g of carbohydrate per pack, offering an alternative to gels and drinks.

Quantity Size: Single Serve
Flavour: Orange
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SiS BETA Fuel Energy Chews offer endurance athletes a chewable alternative to gels and energy drinks during long sessions and races. Each 60g pack delivers approximately 45g of carbohydrate in a portable format, giving runners, cyclists and triathletes another way to plan and vary their energy intake while exercising.

Developed as part of the SiS BETA Fuel range, the chews provide a dual-source carbohydrate option for demanding efforts lasting more than two hours. They can be eaten as a single chew bar or separated into smaller pieces to spread intake across a session. Orange and Lemon flavour options make it easier to choose a fuelling format that fits your preferences.
Product Specifications

Product: SiS BETA Fuel Energy Chews
Product Type: Dual-source carbohydrate energy chew
Format: Chewable energy bar / chew blocks
Serving Size: 1 pack / chew bar
Pack Weight: 60g
Carbohydrate Per Pack: 45g
Carbohydrate Ratio: 1:0.8 maltodextrin-to-fructose ratio
Carbohydrate Per Block: 7.5g when broken into individual chew blocks
Primary Use: High-carbohydrate fuelling during endurance training and racing
Best For: Running, cycling, triathlon, sportives, marathons, ultra-distance events and long training sessions
Recommended Session Length: Designed for endurance exercise lasting over 2 hours
Suggested Use: Consume 1–3 chew bars per hour during exertion, depending on sport, intensity and fuelling target
Carbohydrate Target Guidance: Supports endurance fuelling strategies of 80–120g carbohydrate per hour
Available Sizes: Single Serve, Box of 6 and Box of 20
Available Flavours: Orange, Lemon and Mixed
Dietary / Certification Notes: Vegan, gluten free and Informed Sport certified
Key Features: 45g dual-source carbs, 1:0.8 carb ratio, chewable alternative to gels, easy to portion, compact race-day format and endurance-focused fuelling
Why We Choose SiS

We choose SiS - Science in Sport because they create trusted sports nutrition products designed to help athletes fuel, hydrate and recover with confidence. From isotonic energy gels and electrolyte tablets to recovery drinks and advanced endurance fuelling, SiS supports runners, cyclists, triathletes and active individuals before, during and after training and racing.

Science-Led – Developed with a clear focus on sports science, performance nutrition and real-world athlete needs.

Easy to Use – Practical fuelling solutions such as isotonic energy gels that are simple to take during exercise, with no unnecessary complexity.

Endurance Focused – Designed to support sustained energy, hydration and recovery across running, cycling, triathlon and high-intensity training.

Trusted by Athletes – Used by everyday athletes and elite performers who need reliable nutrition when performance matters.

That’s why SiS is part of the North Sports collection — giving you proven sports nutrition to fuel harder sessions, support recovery and perform at your best.
Quantity Size: Single Serve
Flavour: Orange

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