New customer offer: 20% off your first order. Applied in cart.

Pre-workout performance formula

Make the time you have count.

Clinically dosed energy, pump, endurance and performance ingredients with flexible one- or two-scoop dosing.*

  • Focused energy*
  • Endurance & performance*
  • Strength & power*
  • Informed Sport certified
4.9 · 595 verified reviewsRated 4.9 out of 5
Steel Fuel®
  • 150 mg caffeine per scoop
  • Nitrosigine®
  • Peak ATP®
  • 4.5 g L-citrulline
  • Informed Sport certified
  • 1 or 2 scoops

3 reasons it fits your routine

Strong enough to perform. Flexible enough for real life.

01

Energy & focus

150 mg caffeine per scoop with L-theanine and alpha-GPC for smooth, focused energy.*

02

Performance beyond caffeine

Citrulline, Nitrosigine®, beta-alanine and Peak ATP® support pump, endurance and power.*

03

Two serving options

One scoop for lighter days. Two for your hardest sessions.

Dial in your dose

How are you training today?

Pick the session and see the serving and timing that fits it.

Your routine

Strength / power

Two scoops 20–30 minutes before your heaviest lifts, once you know your tolerance.

Start your routine

Start with one scoop to assess tolerance and follow your label directions.

Straight talk

What it does, what it doesn't.

Your pre-workout should do more than load you up with caffeine.

What it does

  • Supports energy, focus and pump*
  • Lets you choose one or two scoops
  • Shows every dose on the label

What it doesn't

  • Replace sleep, food or training
  • Hide doses in a proprietary blend
  • Feel the same for everyone, so start with one scoop

What's inside, why it's there

Every ingredient has a job.

A closer look at the performance ingredients behind Steel Fuel® and the role each one plays.*

01

Caffeine

Energy and focus at one or two scoops.

150 / 300 mg
02

Citrulline malate

Supports blood flow and training volume.*

9 g at 2 scoops
03

Nitrosigine®

Bonded arginine silicate for pump and focus.*

1.5 g at 2 scoops
04

Beta-alanine

Supports muscular endurance. A harmless tingle is normal.

3.2 g at 2 scoops
05

Betaine

Supports power output.*

2.5 g at 2 scoops
06

Peak ATP®

Supports strength and power.*

450 mg at 2 scoops

Creator videos

See it in real routines.

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Reviews

Real feedback, real performance.

4.9595 verified reviewsRated 4.9 out of 5
Steel Fuel®

Steel Fuel®

Pre-Workout Performance Formula

4.9 · 595 verified reviewsRated 4.9 out of 5

40 servings · $1.25 per serving

Steel Fuel® combines focused energy, pump, endurance, and performance ingredients with flexible 1- or 2-scoop dosing.*
Focused Energy*Endurance & Performance*Strength & Power*Informed Sport Certified

Flavors (2) Cherry Slush

Quantity 1 tub

New customer offer
$39.96$49.95Save 20%

Your first order is 20% off, applied in cart. Routine add-ons below are 20% off too.

Complete your routine20% off with this order

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Designed to fit your life and your goals

Built by someone who is still in the game.

SteelFit® came from my own reality: life changes, but the standard you hold yourself to does not have to.

Rob Kaufman

Rob Kaufman@iamsteelfit (opens in a new tab)

Founder, athlete and dad

Before you scoop.

How much Steel Fuel® should I take, and why are there two serving options?

Start with 1 scoop, which provides 150mg of caffeine and half of the full-performance ingredient amounts. After assessing tolerance, you can use 2 scoops for 300mg of caffeine and the complete performance formula. The flexibility is intentional so you can choose the serving that fits your training and your tolerance. Do not exceed 2 scoops per day.*

When should I take Steel Fuel®?

Take Steel Fuel® 15–30 minutes before training. Mix 1 or 2 scoops with 16–20 fl. oz. of cold water and shake well. Use 2 scoops only after assessing tolerance.

How many servings are in each tub?

Each tub provides 40 one-scoop servings or 20 full two-scoop servings.

What makes Steel Fuel® different from a basic pre-workout?

Steel Fuel® goes beyond caffeine. The fully disclosed formula combines ingredients to support energy, focus, endurance, strength, power, blood flow, and overall training performance. There are no proprietary blends or artificial dyes, so you know exactly what you’re taking.*

What is Peak ATP® and why is it included?

Peak ATP® is a branded performance ingredient included to support strength, power output, and exercise performance. The full 2-scoop serving provides 450mg, adding another layer of performance support beyond caffeine and energy alone.*

What is Nitrosigine® and why is it included?

Nitrosigine® is a patented arginine silicate ingredient included to support nitric oxide production and blood flow. The full 2-scoop serving provides 1.5g and works alongside 9g of L-Citrulline Malate to support blood flow and exercise performance.*

What causes the tingling sensation?

Steel Fuel® contains beta-alanine. Beta-alanine can cause a temporary tingling sensation in some people, and it may be more noticeable at the full 2-scoop serving. One scoop provides 1.6g and two scoops provides 3.2g.

How much caffeine does Steel Fuel® contain?

One scoop provides 150mg of caffeine. The full 2-scoop serving provides 300mg. New users should begin with one scoop to assess tolerance.

Will Steel Fuel® affect my sleep?

Steel Fuel® contains caffeine, and caffeine sensitivity varies from person to person. If caffeine affects your sleep, avoid taking it too close to bedtime.

Does Steel Fuel® contain artificial sweeteners or dyes?

Steel Fuel® is sweetened with stevia and contains no sucralose, Ace-K, artificial sweeteners, or artificial dyes.

Is Steel Fuel® Informed Sport Certified?

Steel Fuel® is Informed Sport Certified, giving athletes and active consumers added confidence in the quality and testing behind the product.

Can I use Steel Fuel® with Steel Hydrate?

Yes. They serve different roles in the same training routine. Use Steel Fuel® before training for energy, focus, and performance support, then use Steel Hydrate during or after training for hydration, electrolytes, amino acids, and recovery support.*

Can I take creatine with Steel Fuel®?

Yes. Creatine is designed for consistent daily use and serves a different role from your pre-workout. Pair daily creatine with Steel Fuel® before training to support strength, muscle performance, and recovery over time.*

What flavors does Steel Fuel® come in?

Steel Fuel® comes in Cherry Slush and Tropical Punch. Both are designed to taste best cold whether you use one scoop or the full two-scoop serving.