USN B4 Bomb Extreme Pre-Workout 300g - Hardcore Serie

SHORT DATED OFFER PRICE

Cola dated 27/06/2026

Cherry dated 27/04/2026

Candy Pop dated 27/05/2026

✓ 7g L-Citrulline ✓ 200mg Caffeine ✓ Zynamite® ✓ AstraGin™ ✓ EnXtra™

SAVE £10 vs RRP | 20 SERVINGS | EXTREME FORMULA | 5 FLAVOURS

This Is Not Your Average Pre-Workout

B4 Bomb Extreme takes everything that made B4 Bomb great and cranks it up to the maximum. Loaded with premium patented ingredients including Zynamite®, AstraGin™, and EnXtra™, this is USN's most advanced pre-workout formula to date. Designed for serious athletes who demand serious performance, B4 Bomb Extreme delivers explosive energy, skin-splitting pumps, and relentless focus from the first scoop to the last rep.

The Extreme Ingredient Stack:

• 7,000mg L-Citrulline - Massive dose for maximum nitric oxide production and pump intensity
• 1,500mg Beta-Alanine - Delays muscle fatigue so you can push harder for longer (feel the tingle!)
• 1,000mg Creatine Monohydrate - Boosts strength, power output, and muscle fullness
• 1,400mg D-Aspartic Acid - Supports natural testosterone production and muscle performance
• 300mg N-Acetyl-L-Tyrosine - Premium form of tyrosine for enhanced mental focus and cognitive performance
• 200mg Caffeine - Clean, powerful energy to power through even the toughest sessions
• 200mg Zynamite® - Patented mango leaf extract (60% mangiferin) clinically shown to enhance energy and cognitive performance - a next-generation caffeine alternative
• 31mg AstraGin™ - Patented absorption enhancer to maximise uptake of every active ingredient
• 26mg EnXtra™ - Patented Alpinia galanga extract clinically shown to sustain alertness and focus for up to 5 hours

What You'll Experience:

✓ Explosive, Sustained Energy - Caffeine + Zynamite® + EnXtra™ for energy that lasts the whole session
✓ Extreme Pumps - 7g Citrulline delivers the most intense muscle fullness you've felt
✓ Laser-Sharp Focus - N-Acetyl-L-Tyrosine + EnXtra™ keeps your mind locked in for up to 5 hours
✓ Greater Strength & Power - Creatine + D-Aspartic Acid for maximum performance output
✓ Train Longer - Beta-Alanine delays the burn so you can squeeze out extra reps
✓ Maximum Absorption - AstraGin™ ensures every ingredient is fully absorbed and utilised

What Makes Extreme Different from Standard B4 Bomb:

• Zynamite® - Premium patented mango extract not found in standard B4 Bomb
• AstraGin™ - Enhanced absorption technology for maximum ingredient effectiveness
• EnXtra™ - Sustained 5-hour focus and alertness support
• D-Aspartic Acid - Added for testosterone and performance support
• N-Acetyl-L-Tyrosine - Premium bioavailable form of tyrosine for superior cognitive performance
• 20 Servings - More servings per tub for better value

Perfect For:

✓ Experienced gym-goers wanting the most advanced pre-workout formula
✓ Athletes who need sustained energy and focus for long, intense sessions
✓ Anyone who has outgrown standard pre-workouts
✓ Those who want patented, clinically researched ingredients
✓ Serious lifters chasing new personal bests

Choose From 5 Flavours:

Cherry, Orange, Blue Raspberry, Gummy Cola, Hawaiian Pump

How to Use:

Mix 2 scoops (15g) with 250-300ml of cold water. Take 30 minutes before training.

• Start with 1 scoop to assess your tolerance if new to stimulant pre-workouts
• Stay well hydrated throughout your session
• Do not take within 5-6 hours of bedtime due to caffeine and EnXtra™ content
• Best taken on an empty stomach or 1-2 hours after a light meal

🚚 Free Shipping on Orders Over £59.99 - Add USN Blue Lab Whey to Qualify!
🏆 USN Hardcore Series - Maximum Performance Formula
✅ Zynamite® + AstraGin™ + EnXtra™ - Triple Patented Ingredients
💪 20 Servings | Just £0.75 Per Session
💰 Save £10 vs RRP!

Full Nutritional Profile (Per 15g Serving)

• Energy: 2 kcal / 9 kJ
• Carbohydrates: 0.5g | Fat: 0g | Salt: 0.43g

Active Ingredient Breakdown (Per 15g Serving)

• L-Citrulline: 7,000mg
• D-Aspartic Acid: 1,400mg
• Beta-Alanine: 1,500mg
• Creatine Monohydrate: 1,000mg
• N-Acetyl-L-Tyrosine: 300mg
• Caffeine: 200mg
• Zynamite® (Mango Extract 60% Mangiferin): 200mg
• AstraGin™: 31mg
• EnXtra™ (Alpinia galanga extract): 26mg

Vitamins & Minerals (Per 15g Serving)

• Vitamin B12: 15µg (600% RI) | Niacin: 10mg (62.5% RI) | Riboflavin: 0.5mg (35.7% RI)
• Calcium: 214mg | Phosphorus: 116mg | Potassium: 120mg
• Vitamin B6: 0.2mg | Biotin: 10µg

Ingredients

L-Citrulline, D-Aspartic Acid, Beta-Alanine, Creatine Monohydrate, Acids (Citric Acid, Malic Acid), Acidity Regulator (Dipotassium Phosphate), Anti-Caking Agents (Silicon Dioxide, Calcium Silicate), Thickener (Polydextrose), Flavouring, N-Acetyl-L-Tyrosine, Natural Anhydrous Caffeine, Zynamite® (Mango Leaf Extract 60% Mangiferin), Stabiliser (Potassium Chloride), Sweeteners (Acesulfame K, Sucralose), AstraGin™ (Panax Ginseng & Astragalus Membranaceous Root Extracts), EnXtra™ (Alpinia Galanga Root Extract), Nicotinic Acid, Riboflavin, Pyridoxine HCl, Methyl Cobalamin Hydrate, D-Biotin.

Allergen Warning: Made in a facility that also processes milk, soy, egg, peanuts, tree nuts, fish/crustaceans/shellfish oils, and wheat products.

Not suitable for: Under 18s, pregnant or breastfeeding women, or those sensitive to caffeine or stimulants. Consult your doctor before use if on medication.

💣 20 Servings | Triple Patented Formula | Maximum Extreme Performance

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Cut off Time 

Our cut off time for same day dispatch is 3 pm. All orders placed after 3pm will be dispatched the next working day. 

When Will My Order Arrive? 

Standard Shipping on items less than 3kg will be shipped via Royal Mail on a 48-72 hour delivery service. Items over 3kg will be sent via DPD 2 working day service.

Next working day service is shipped via DPD.

Damaged? Missing Items

We pride ourselves on delivering a high quality service and in the unfortunate situation where a parcel may been damaged in transit please contact us as soon as you receive your order. In some circumstances we do require pictures to be emailed in order to either credit or refund. If no pictures are provided then any claims will be rejected. If you can see damage to the parcel upon delivery please reject the delivery and sign the parcel as damaged.

If an item is missing from your order please contact us as soon as the order has been opened and contact us on 0113 345 9344 so that we can launch an investigation. If the wrong item has been sent please contact us to let us know which item has been sent so that we can resolve the issue for you.  

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