Expert Research Review
Science in Sport Beta Fuel Dual Source Energy Gel Review
Editorial desk · 1 February 2026
Review type
How we assessed this product
How we assessed this product: published specs, catalog comparisons, and editorial research — not hands-on testing unless the page says otherwise.
Review summary
Science in Sport Beta Fuel Dual Source Energy Gel is a energy gel (40 g carbs/serving; no caffeine). High-carb dual-source gel with 40g carbs (~158 kcal) per serving — designed for marathon and long race fueling when you want SiS availability with fewer packets than GO Isotonic. I'd shortlist it for 40g carbs per gel supports high-carb race targets with fewer packets.
The trade-off is thicker than GO Isotonic — practice fluid timing on long runs — Maurten Gel 160 is the cleaner compare when that is most of your week. It fits buyers who actually need a energy gel (40 g carbs/serving; no caffeine), not a one-product rotation.
The bottom line
Science in Sport Beta Fuel Dual Source Energy Gel is a energy gel (40 g carbs/serving; no caffeine). High-carb dual-source gel with 40g carbs (~158 kcal) per serving — designed for marathon and long race fueling when you want SiS availability with fewer packets than GO Isotonic. I'd shortlist it for 40g carbs per gel supports high-carb race targets with fewer packets. The trade-off is thicker than GO Isotonic — practice fluid timing on long runs — Maurten Gel 160 is the cleaner compare when that is most of your week. It fits buyers who actually need a energy gel (40 g carbs/serving; no caffeine), not a one-product rotation.
Who this review is for
- Enough of what is built for without stretching it into another job.
- Over a generalist when energy gel (40 g carbs/serving; no caffeine) is the weekly filter.
- Dual-source maltodextrin/fructose format for structured endurance fueling.
- Strong retail availability vs niche race-fuel brands.
Who it's not for
- Those looking for thicker than GO Isotonic.
- Those looking for different tool when this role is not your week.
- Those looking for Maurten Gel 160 when a energy gel (40 g carbs/serving; no caffeine) is not.
- Those looking for Fewer flavour options than the GO range.
Pros
Cons
- Thicker than GO Isotonic — practice fluid timing on long runs
- Fewer flavour options than the GO range
- Still not a high-sodium electrolyte product
How it scores
How we scoreScores are out of 10 for this product’s job — not a claim it wins every category. Each note below is about this product, not a generic glossary.
Format & Carry
Carbohydrate Delivery
Caffeine Preference
Taste / Texture Practicality
Practical Race Use
Value
Editorial.
What these scores mean
Format & Carry
8.6/10
Very strong
How this product performs on format & carry.
Very strong on format & carry for how Science in Sport Beta Fuel Dual Source Energy Gel is meant to be used.
Carbohydrate Delivery
8.7/10
Very strong
How this product performs on carbohydrate delivery.
Very strong on carbohydrate delivery for how Science in Sport Beta Fuel Dual Source Energy Gel is meant to be used.
Caffeine Preference
8.9/10
Very strong
How this product performs on caffeine preference.
Very strong on caffeine preference for how Science in Sport Beta Fuel Dual Source Energy Gel is meant to be used.
Taste / Texture Practicality
8.9/10
Very strong
How this product performs on taste / texture practicality.
Very strong on taste / texture practicality for how Science in Sport Beta Fuel Dual Source Energy Gel is meant to be used.
Practical Race Use
9.0/10
Very strong
How this product performs on practical race use.
Very strong on practical race use for how Science in Sport Beta Fuel Dual Source Energy Gel is meant to be used.
Value
8.2/10
Good
Whether the strengths are worth the price for how often you will use them.
Good value if the shoe's main job matches your week. Check live street price; skip it if a cheaper peer covers the same sessions.
How we wrote this review

How we assessed the Science in Sport Beta Fuel Dual Source Energy Gel: Expert Research from published manufacturer specifications, the stated role, and similar products in the same job. We have not personally tested this product unless a first-hand section says otherwise. Scores help you decide; affiliate links do not change the verdict.
We start with the numbers that shape the buy — weight, stack, drop, surface intent, stability class and materials — then place the product against alternatives that solve a similar job. Feel claims only show up when the sources support them.
Sources used for this review
- Editor comparison
What it is
Science in Sport Beta Fuel Dual Source Energy Gel is a energy gel (40 g carbs/serving; no caffeine). High-carb dual-source gel with 40g carbs (~158 kcal) per serving — designed for marathon and long race fueling when you want SiS availability with fewer packets than GO Isotonic. I'd shortlist it for 40g carbs per gel supports high-carb race targets with fewer packets, plus dual-source maltodextrin/fructose format for structured endurance fueling. I'd pause when thicker than GO Isotonic — practice fluid timing on long runs, plus fewer flavour options than the GO range is most of your week — Maurten Gel 160 is the cleaner starting compare. Generation Beta Fuel is the current reference.
Key specs
Science in Sport Beta Fuel Dual Source Energy Gel — published figures worth using as filters: • type: gel • serving size: 60ml sachet • calories: 158 • carbs per serving: 40 • sugars: 19 • caffeine: no • protein: 0 • fluid required: Water available recommended for thicker dual-carb gels
Fit & daily use
Fit has to work for a energy gel (40 g carbs/serving; no caffeine), not as a one-size story. High-carb dual-source gel with 40g carbs (~158 kcal) per serving — designed for marathon and long race fueling when you want SiS availability with fewer packets than GO Isotonic. If lockdown or volume is the reason you return shoes, try it on or buy somewhere returns are easy rather than hoping the last covers every foot. Science in Sport Beta Fuel Dual Source Energy Gel is strongest when 40g carbs per gel supports high-carb race targets with fewer packets, plus dual-source maltodextrin/fructose format for structured endurance fueling is what you actually need most weeks.
Performance
Everyday performance is the energy gel (40 g carbs/serving; no caffeine) brief, not a universal score. High-carb dual-source gel with 40g carbs (~158 kcal) per serving — designed for marathon and long race fueling when you want SiS availability with fewer packets than GO Isotonic. Keep it when 40g carbs per gel supports high-carb race targets with fewer packets, plus dual-source maltodextrin/fructose format for structured endurance fueling is the week; skip it when thicker than GO Isotonic — practice fluid timing on long runs, plus fewer flavour options than the GO range is the pattern.
Durability
Durability belongs in a energy gel (40 g carbs/serving; no caffeine) rotation, not a forever one-product plan. thicker than GO Isotonic — practice fluid timing on long runs, plus fewer flavour options than the GO range is the ownership limit to weigh against 40g carbs per gel supports high-carb race targets with fewer packets, plus dual-source maltodextrin/fructose format for structured endurance fueling. We have not logged a wear diary on this page unless a first-hand section says otherwise. Science in Sport Beta Fuel Dual Source Energy Gel is strongest when 40g carbs per gel supports high-carb race targets with fewer packets, plus dual-source maltodextrin/fructose format for structured endurance fueling is what you actually need most weeks.
Where it is strongest
Science in Sport Beta Fuel Dual Source Energy Gel is strongest as a energy gel (40 g carbs/serving; no caffeine) when 40g carbs per gel supports high-carb race targets with fewer packets, plus dual-source maltodextrin/fructose format for structured endurance fueling. That is the case for keeping it over Maurten Gel 160 — not a claim that it covers every session. I'd skip Science in Sport Beta Fuel Dual Source Energy Gel when thicker than GO Isotonic — practice fluid timing on long runs, plus fewer flavour options than the GO range is the usual pattern — Maurten Gel 160 is the cleaner compare.
Trade-offs & limits
The honest limit on Science in Sport Beta Fuel Dual Source Energy Gel is thicker than GO Isotonic — practice fluid timing on long runs, plus fewer flavour options than the GO range. If that pattern is most of your week, Maurten Gel 160 is the cleaner starting compare. I'd skip Science in Sport Beta Fuel Dual Source Energy Gel when thicker than GO Isotonic — practice fluid timing on long runs, plus fewer flavour options than the GO range is the usual pattern — Maurten Gel 160 is the cleaner compare.
Who should buy
Buy Science in Sport Beta Fuel Dual Source Energy Gel when a energy gel (40 g carbs/serving; no caffeine) is the actual job and 40g carbs per gel supports high-carb race targets with fewer packets, plus dual-source maltodextrin/fructose format for structured endurance fueling is non-negotiable. Skip it when thicker than GO Isotonic — practice fluid timing on long runs, plus fewer flavour options than the GO range would hit most sessions, or when Maurten Gel 160 is simply closer to the week you run. I'd skip Science in Sport Beta Fuel Dual Source Energy Gel when thicker than GO Isotonic — practice fluid timing on long runs, plus fewer flavour options than the GO range is the usual pattern — Maurten Gel 160 is the cleaner compare.
Value
Value is whether the energy gel (40 g carbs/serving; no caffeine) brief is worth the spend versus Maurten Gel 160. Pay for 40g carbs per gel supports high-carb race targets with fewer packets, plus dual-source maltodextrin/fructose format for structured endurance fueling; do not pay for a role you will not use. Science in Sport Beta Fuel Dual Source Energy Gel is strongest when 40g carbs per gel supports high-carb race targets with fewer packets, plus dual-source maltodextrin/fructose format for structured endurance fueling is what you actually need most weeks. I'd skip Science in Sport Beta Fuel Dual Source Energy Gel when thicker than GO Isotonic — practice fluid timing on long runs, plus fewer flavour options than the GO range is the usual pattern — Maurten Gel 160 is the cleaner compare.
How it compares
Science in SportBeta Fuel Gel- Score
- 8.8
- Best for
- 40g carbs per gel supports high-carb…
MaurtenGel 100 Caf 100- Score
- 8.9
- Best for
- 100mg caffeine option stacks cleanly…
MaurtenGel 160- Score
- 9.1
- Best for
- 40g carbs per packet reduces packet…
Science in SportGO Isotonic Gel- Score
- 8.2
- Best for
- Thinner isotonic texture is…
Keep reading
Specs and buy links live on the product page. Use the paths below when you want alternatives, head-to-heads, shortlists, or how-to choose frameworks.
Verdict

Very Good
Kitletics Score
- Format & Carry8.6
- Carbohydrate Delivery8.7
- Caffeine Preference8.9
- Taste / Texture Practicality8.9
Should you buy the Beta Fuel Gel?
Science in Sport Beta Fuel Dual Source Energy Gel is a energy gel (40 g carbs/serving; no caffeine). High-carb dual-source gel with 40g carbs (~158 kcal) per serving — designed for marathon and long race fueling when you want SiS availability with fewer packets than GO Isotonic. I'd shortlist it for 40g carbs per gel supports high-carb race targets with fewer packets. The trade-off is thicker than GO Isotonic — practice fluid timing on long runs — Maurten Gel 160 is the cleaner compare when that is most of your week. It fits buyers who actually need a energy gel (40 g carbs/serving; no caffeine), not a one-product rotation.
Buy if
- You're looking for 40g carbs per gel supports high-carb race targets with fewer packets.
- You want enough of what Beta Fuel Gel is built for without stretching it into another job.
- You prefer over a generalist when energy gel (40 g carbs/serving; no caffeine) is the weekly filter.
Skip if
- You need to avoid thicker than GO Isotonic — practice fluid timing on long runs.
- You prefer a different tool when this role is not your week.
- You prefer Maurten Gel 160 when a energy gel (40 g carbs/serving; no caffeine) is not the weekly.
About this review
- Type
- Expert Research Review
- Reviewer
- Kitletics Editorial
- Published
- 1 February 2026
- Updated
- 1 September 2026
- Verified
- 9 September 2026
No brand-supplied product or sponsored testing applied to this review unless stated. Affiliate availability does not affect scores or verdict. Nutrition copy is limited to label/spec facts — not health or medical claims.
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Amazon.nl
in stockMarketplaceNLLast checked 12 September 2026€ 3,40View on Amazon
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