STACK & SAVE

Cardio Stack

Or Buy Now & Pay Later with 4 Interest-Free Payments of $33.75
×
Sezzle it now. Pay us back later.
Pay us back later.
Check out with Sezzle and split your entire order into
4 interest-free payments over 6 weeks.
Check out with Sezzle and split your entire order into 4 interest-free payments over 6 weeks.
No Interest, Ever
Plus no fees if you pay on time
No Impact to Your
Credit Score
Instant Approval
Decisions
Just select Sezzle at checkout!
Just select Sezzle
at checkout!
Subject to approval.

Shop now. Enjoy now. Pay later.

4 interest-free payments, every two weeks, at checkout

Select Afterpay

Select Afterpay

Choose Afterpay at checkout and use your existing payment card

Complete Checkout

Complete checkout

No long forms, approval decision online. Enjoy your purchase right away!

Pay over 4 Payments

Pay over 4 payments

Pay every two weeks with zero interest! No fees when you pay on time.


You must be over 18, a resident of the U.S. and meet additional eligibility criteria to qualify. Late fees apply. Estimated payment amounts shown on product pages exclude taxes and shipping charges, which are added at checkout. Click here for complete terms. © 2019 Afterpay

Klarna badge
In collaboration with steelsupplements

Flexible payment options
Pay in 4
Interest-free, due every 14 days.
Pay later in 30 days
Get it now. Pay later. Interest-free.
Pay over time
Split the cost into smaller payments.
Pay now
Pay in full with card.

The availability of payment options may differ depending on the merchant and purchase amount. Subject to approval. Additional terms may apply.

Monthly financing through Klarna issued by WebBank. Other CA resident loans made or arranged pursuant to a California Financing Law license. NMLS # 1353190.

How it works

At checkout select Klarna badge

Choose your payment plan

Different payment plans may be shown depending on the purchase amount and credit score.

Complete your checkout

The amount will be charged based on the payment plan you chose.

Rendering loop-subscriptions
In Stock.
Buy Now
  • The Cardio Stack is Steel’s fat-loss, energy, focus, thermogenic, blood-flow, endurance, pump, and cardio-performance support stack, built for users who want to turn cardio, conditioning, and high-output training into a more focused and productive session.

    This stack combines SHREDDED and N.O.7 into one powder-free performance system.

    SHREDDED supports strong stimulant-based energy, focus, alertness, mental drive, thermogenic support, appetite-control support, metabolism support, and disciplined body-composition execution.

    N.O.7 supports nitric oxide, blood flow, vasodilation, vascularity, pump, endurance, and performance output.

    This is not just a fat burner plus a pump product.

    The Cardio Stack is built around two major performance lanes: energy and thermogenic execution from SHREDDED, plus blood-flow, endurance, and nitric oxide support from N.O.7.

    SHREDDED helps drive the session.

    N.O.7 helps support the output.

    Together, they create a clean capsule-based stack for cardio, conditioning, training intensity, body-composition phases, and users who want more from their work.


    Built To Support
    • Fat-loss focused phases
    • Cardio performance
    • Conditioning sessions
    • Thermogenic energy
    • Strong stimulant-based energy
    • Focus and alertness
    • Mental drive
    • Appetite-control support
    • Metabolism support
    • Blood-flow support
    • Nitric oxide support
    • Vasodilation support
    • Vascularity support
    • Endurance support
    • Pump support
    • Sweat-heavy training
    • High-output sessions
    • Body-composition focused routines
    • Users who want energy plus blood-flow support in one stack

    Stack Snapshot

    Included Products:

    • SHREDDED
    • N.O.7

    Stack Type: Fat-loss, cardio, thermogenic, energy, focus, blood-flow, nitric oxide, endurance, and performance-support stack

    Primary Lane: Energy, focus, thermogenesis, appetite-control support, cardio output, blood flow, endurance, nitric oxide, vascularity, and body-composition support

    Best For: Lifters, athletes, active users, cardio-focused users, body-composition focused users, conditioning-focused users, and anyone who wants SHREDDED’s energy and thermogenic support paired with N.O.7’s nitric oxide and endurance-support lane


    Why This Stack Works

    The Cardio Stack works because cardio performance is not just about doing more minutes.

    A productive cardio or conditioning session depends on energy, focus, drive, circulation, endurance, hydration, recovery, and the ability to stay consistent.

    SHREDDED supports the execution lane. It is built for users who want strong stimulant-based energy, focus, alertness, mental drive, thermogenic support, appetite-control support, metabolism support, and disciplined body-composition execution.

    N.O.7 supports the blood-flow and endurance lane. It is built to support nitric oxide, vasodilation, circulation, vascularity, pump, endurance, and performance output.

    Together, these two products create a focused cardio-performance system:

    • SHREDDED supports energy, focus, thermogenic support, appetite-control support, and body-composition execution.
    • N.O.7 supports nitric oxide, blood flow, vascularity, pump, endurance, and cardio-performance output.

    SHREDDED helps you start with more drive.

    N.O.7 helps support the performance side of the session.

    That is why this stack makes sense.


    Who This Stack Is For

    The Cardio Stack is designed for users who want a more complete cardio and body-composition support system than SHREDDED alone.

    This stack is a strong fit for:

    • Lifters adding cardio to a cutting phase
    • Athletes working through conditioning sessions
    • Active users chasing a leaner look
    • Users who want strong energy and focus
    • Users who want thermogenic support
    • Users who want appetite-control support
    • Users who want nitric oxide support
    • Users who want blood-flow support
    • Users who want endurance support
    • Users who want better training output during cardio
    • Users who prefer capsules instead of powder
    • Users who want SHREDDED plus a non-stimulant performance layer

    If your goal is to support energy, focus, cardio output, endurance, blood flow, and body-composition execution in one stack, this is the lane.

    This stack is not a replacement for training, nutrition, hydration, or consistency.

    It is built to support users who are actually ready to do the work.


    Product Roles Inside The Stack

    SHREDDED

    The thermogenic energy and execution driver.

    SHREDDED is built for users who want strong stimulant-based energy, focus, alertness, mental drive, appetite-control support, thermogenic support, metabolism support, and body-composition execution.

    In the Cardio Stack, SHREDDED helps support the “go” side of the plan.

    Use SHREDDED when the goal is to stay energized, focused, and locked in during cardio, conditioning, training, or calorie-controlled phases.

    New users should start with 1 capsule to assess tolerance before moving to the full serving.


    N.O.7

    The blood-flow, nitric oxide, and endurance-support layer.

    N.O.7 is built for users who want nitric oxide support, vasodilation support, blood-flow support, vascularity support, endurance support, and pump performance.

    In the Cardio Stack, N.O.7 gives the formula a non-stimulant performance lane.

    Use N.O.7 when the goal is to support circulation, endurance, blood flow, vascularity, and the performance side of cardio or conditioning work.


    Why The Cardio Stack Matters

    Most users think cardio is just about suffering longer.

    That is weak architecture.

    The better plan is to support the session.

    Cardio and conditioning require:

    • Energy
    • Focus
    • Drive
    • Hydration
    • Blood-flow support
    • Endurance support
    • Thermogenic support
    • Recovery
    • Consistency
    • A nutrition plan that actually matches the goal

    The Cardio Stack is built to support those major lanes.

    SHREDDED brings strong energy, focus, alertness, thermogenic support, appetite-control support, and body-composition execution.

    N.O.7 adds nitric oxide, blood-flow, vascularity, pump, endurance, and non-stimulant performance support.

    That is the difference between simply doing cardio and building a better cardio-support system.


    The Energy + Blood-Flow Connection

    The Cardio Stack makes sense because it does not rely on stimulation alone.

    SHREDDED supports energy, alertness, focus, thermogenic output, and training drive.

    N.O.7 supports nitric oxide, vasodilation, blood flow, vascularity, and endurance.

    Together, the stack supports both sides of the session:

    • The mental and energy side
    • The circulation and performance side

    This is especially useful during cardio, conditioning, step-based phases, high-sweat training, and calorie-controlled routines where users want to keep output high while staying locked into the plan.

    Energy helps you show up.

    Blood-flow and endurance support help the session perform.


    Cardio Stack vs. Shredded Stack

    Steel’s fat-loss and body-composition stacks are built around different support needs.

    Shredded Stack: SHREDDED + BCAAS/EAAS

    Best for users who want SHREDDED paired with amino acid, hydration, endurance, and recovery-focused training support.

    Cardio Stack: SHREDDED + N.O.7

    Best for users who want SHREDDED paired with nitric oxide, blood-flow, vascularity, pump, and endurance support.

    Simple breakdown:

    • Shredded Stack: energy plus amino acid and recovery support.
    • Cardio Stack: energy plus nitric oxide and blood-flow support.

    If your weak link is recovery nutrition, amino acids, or hydration, the Shredded Stack makes sense.

    If your weak link is cardio output, circulation support, blood flow, vascularity, or endurance, the Cardio Stack is the better fit.


    Best Used For

    Cardio Sessions

    Use the Cardio Stack before cardio when the goal is energy, focus, drive, thermogenic support, blood-flow support, and endurance support.

    Conditioning Work

    This stack works well for hard conditioning sessions where output, intensity, sweat, and stamina matter.

    Cutting Phases

    Use the Cardio Stack during a structured cutting phase when the goal is energy, appetite-control support, thermogenic support, and productive cardio output.

    Step-Based Body-Composition Phases

    This stack fits well for users increasing daily movement, step count, incline walking, stair work, or steady-state cardio.

    Cardio + Lifting Days

    SHREDDED supports the energy and focus lane, while N.O.7 supports the blood-flow and endurance lane.

    Morning Or Midday Use

    Because SHREDDED is stimulant-based, this stack is best used earlier in the day or far enough from bedtime to protect sleep.

    Users Who Want A Powder-Free Stack

    Both products are capsule-based, making this a simple option for users who do not want another powder in their routine.


    How To Use The Cardio Stack

    Use each product as directed on its label.

    A practical setup:

    Before Cardio / Training:

    Use SHREDDED as directed for strong energy, focus, thermogenic support, appetite-control support, and body-composition execution.

    Before Cardio / Training:

    Use N.O.7 as directed for nitric oxide, blood-flow, vascularity, pump, and endurance support.

    Because SHREDDED contains stimulant-based ingredients, assess tolerance carefully.

    New users should start with 1 capsule of SHREDDED to assess tolerance before moving to the full serving.

    Do not take SHREDDED too close to bedtime.

    Do not combine SHREDDED with excessive coffee, energy drinks, stimulant-based pre-workouts, or other stimulant-heavy products unless you have carefully accounted for total stimulant intake.

    More stimulants do not automatically mean better performance or better fat loss. More often, they mean worse sleep, worse recovery, higher stress, and a worse plan.


    Stimulant Use Rules

    This stack contains SHREDDED, a high-stimulant energy and body-composition support product.

    Respect your tolerance.

    Do not combine the Cardio Stack with PRE, CHARGED, AMPED, another serving of SHREDDED, excessive coffee, energy drinks, or other stimulant-heavy products unless you have carefully accounted for total caffeine and stimulant intake.

    If you are sensitive to caffeine or stimulants, start conservatively.

    If you train late at night, be smart. Stimulants can interfere with sleep, and poor sleep can work against recovery, mood, appetite control, training consistency, and body-composition progress.

    The goal is better execution, not stimulant abuse.


    Nutrition Guidance

    The Cardio Stack works best when nutrition supports the goal.

    For best results, support this stack with:

    • Goal-appropriate calorie intake
    • High protein intake
    • Consistent hydration
    • Electrolytes
    • Fruits and vegetables
    • Fiber-rich foods
    • Smart carbohydrate timing
    • Resistance training
    • Cardio that matches the goal
    • Sleep and recovery discipline
    • A plan you can follow consistently

    Do not use SHREDDED as an excuse to eat like the plan does not matter.

    SHREDDED can help support energy, focus, appetite-control, thermogenic output, and body-composition execution, but nutrition still drives the outcome.

    N.O.7 can help support blood flow, nitric oxide, vascularity, and endurance, but it does not replace conditioning, hydration, or a structured training plan.

    The stack helps. The plan still drives the result.


    Training Guidance

    The Cardio Stack should be paired with structured training and daily movement.

    Best training styles include:

    • Incline walking
    • Stair work
    • Steady-state cardio
    • HIIT
    • Conditioning circuits
    • Sled work
    • Athletic conditioning
    • Cardio paired with resistance training
    • Step-based body-composition phases
    • Cutting phases
    • Recomp-focused training

    Train hard, but do not let cardio become random punishment.

    Use cardio with intent.

    The goal is not just to sweat. The goal is to support better output, better consistency, better conditioning, and better body-composition execution.

    If training intensity climbs, recovery needs to climb with it.


    Lifestyle Guidance

    For best results while using the Cardio Stack:

    • Use as directed
    • Start with tolerance in mind
    • Do not exceed recommended use
    • Do not stack with other stimulant-heavy products
    • Avoid late-day use if caffeine affects sleep
    • Stay hydrated
    • Maintain electrolyte intake
    • Keep protein intake high
    • Do not crash diet
    • Prioritize sleep
    • Train with structure
    • Manage stress
    • Be consistent

    Cardio rewards consistency.

    Not chaos.


    Individual Product Details

    For a deeper breakdown of each product, review the individual SHREDDED and N.O.7 product pages.

    Those pages explain each formula in greater detail.

    This page explains why these two products are combined and how the full stack is designed to support cardio performance, thermogenic energy, focus, nitric oxide, blood flow, endurance, vascularity, and body-composition execution.


    Important Use Notice

    Use as directed. Do not exceed recommended use.

    This stack contains stimulant-based ingredients from SHREDDED. Caffeine and stimulant-based ingredients may cause sleeplessness, nervousness, irritability, rapid heartbeat, increased sweating, or other stimulant-related effects in sensitive users.

    Do not use if sensitive to caffeine, stimulants, or stimulant-like ingredients. Do not combine with other stimulant-heavy products, excessive caffeine, alcohol, recreational drugs, or products that may affect heart rate, blood pressure, sleep, or tolerance.

    If using other supplements that contain overlapping nitric oxide ingredients, blood-flow support ingredients, pump ingredients, hydration-support ingredients, or stimulant ingredients, account for total daily intake.

    Consult a qualified healthcare professional before use if you have or have had cardiovascular, blood pressure, anxiety, psychiatric, neurological, kidney, liver, endocrine, thyroid, metabolic, digestive, or other medical concerns, or if you take prescription medications.

    Discontinue use and consult a healthcare professional if you experience adverse reactions.


    Final Note

    The Cardio Stack is built for one purpose: cardio-performance support with energy, thermogenic support, blood-flow support, and endurance support built in.

    SHREDDED brings the strong stimulant-based energy, focus, alertness, appetite-control support, thermogenic support, metabolism support, and body-composition execution lane.

    N.O.7 supports nitric oxide, blood flow, vasodilation, vascularity, pump, endurance, and performance output.

    This is the stack for users who want more from cardio than sweat alone.

    Use it with structure. Respect stimulants. Hydrate like it matters. Keep protein high. Train with intent. Protect sleep. Stay consistent.

  • Shredded-AF: Assess your tolerance with 1 capsule of Shredded-AF, approximately 15-30 minutes prior to exercise. If more effects are desired, up to 2 capsules can be taken within a 24hr period. Do not exceed 2 capsules within a 24hr period. Do not take 6-8 hours before bed. Do not combine with other stimulants including coffee.

    N.O.7: Take 1 capsule approximately 15-30 minutes prior to exercise.
Loader icon

Reviews, Q&As

Write A Review
Ask A Question

Customer Reviews

Based on 13 reviews
100%
(13)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
K
Ken
Age: 33 to 40
Gender: Male
NO7 is the GOAT

Perfect stack for leaning down before the summer. Especially with the NO7, every time I take it with an arm day, you can noticeably see the difference in your arms once you get a pump, and feel it too 5 stars all the way!

d
destry lack
Age: Over 40
Gender: Male
I have been using Steel products for 4 years and

I have been using Steel products for 4 years and I’m just as pleased today as I was when I started! Thanks

P
Pascale Trotta
Age: 33 to 40
Gender: Male
Works Great!

Works as intended and will continue to reorder. Helps maintain energy and pump.

Y
Yesenia Lopez moreno
Age: 33 to 40
Gender: Female
Perfect Stack

This is my go to when trying to achieve a shredded lean look you definitely see results with both these products together

R
Ronnie Porraz
Age: Over 40
Gender: Male
Weight lose and energy

Shredded work great, energy all day and holds hunger

J
Jessica Maldonado
Age: 33 to 40
Gender: Female
Amazing!

I keep coming back for more love steel products!!!

r
r.d.
Age: 18 to 26
Gender: Female
Great start every day

Gives u energy to start the day til afternoon

R
Rosalindo Morales
Age: 27 to 32
Gender: Male
Great supplements

I’ve been using Steel supplements for about 3-5 years now and they have been a game changer. I love the shredded af. Definitely a top supplement for me.

J
Jon Brockman
Age: 33 to 40
Gender: Male
Amazing

Love it, have become quick staples amongst my supplements

B
Ben Mims
Age: 18 to 26
Gender: Male
Skin splitting pump

This stack works great! The NO gives you massive pumps while the shredded af provides more vascularity by cutting down body fat.