Arms Race is the brand; Harness is the product
“Arms Race pre-workout” commonly refers to Arms Race Nutrition Harness. It is not simply a phrase for escalating arm-day supplements. This review uses the manufacturer’s current Pink Lemonade facts image and matching 20-serving product artwork.
The Pink Lemonade panel defines one serving as two scoops weighing 14.5 g. The container therefore provides 20 full servings or 40 half-serving scoops. A one-scoop comparison must use the half-serving column; scoop count and full-serving count are not interchangeable.
The current two-scoop formula
- 6,000 mg L-citrulline and 3,200 mg beta-alanine.
- 1,000 mg L-tyrosine.
- 254 mg VasoDrive-AP from hydrolyzed milk casein.
- 250 mg Cognizin citicoline and 150 mg elevATP.
- 100 mg bitter-orange extract standardized to 30% synephrine.
- 10 mg Huperzia serrata extract standardized to 1% huperzine A.
Those standardized-extract percentages matter: 100 mg bitter-orange extract is not 100 mg synephrine. The panel expressly declares milk as an allergen. This formula is also different from older Harness labels featuring ViNitrox; do not merge their ingredient lists.
Caffeine: distinguish ingredient weight from yield
The full-serving column lists 350 mg caffeine anhydrous plus 75 mg zümXR extended-release material, explicitly described as yielding 70% caffeine. Applying that percentage gives 52.5 mg caffeine from zümXR and an estimated 402.5 mg total per two scoops, or 201.25 mg per scoop. These are label-based calculations, not laboratory measurements.
The website FAQ lists the two ingredient weights without explaining that yield. Simply adding 350 and 75 and presenting 425 mg as verified caffeine would ignore the panel’s qualification. Confirm the exact flavor and lot with Arms Race Nutrition if the container differs or the total is unclear.
What to consider before using it
The manufacturer directs two scoops in 8–12 fluid ounces of water before exercise and suggests one scoop initially to assess tolerance. Its high stimulant content deserves attention before any stacking decision. FDA’s general 400 mg daily reference is not a target or individual safety guarantee; other caffeine consumed that day also matters.
Avoid adding another stimulant product. Check the full container warnings, medication considerations and milk allergy suitability with a qualified clinician. Marketing descriptions of extended release do not establish that a user will avoid jitters or sleep disruption. This article evaluates the declared label, not firsthand performance or taste.
Product pages and existing offers
These are affiliate links; we may earn a commission from qualifying purchases. Check current labels and checkout terms. Discounts, including any 20% offer or code SHAWTAYYYY7, are subject to eligibility and are not guaranteed.
- Original Bucked Up: compare the linked product or offer details before ordering.
- PUMP-OCALYPSE: compare the linked product or offer details before ordering.
- Bucked Up store and current offers: compare the linked product or offer details before ordering.
Sources and review notes
Reviewed October 12, 2026. Arms Race Nutrition Harness product page and FAQ. Harness Pink Lemonade current facts panel. FDA caffeine guidance. This is editorial guidance based on identified labels and sources, not a report of personal product testing. Product versions and offers can change.
