Bulking Bundle
Maximum Mass Building Stack
€200.00 €235.00
Save 15%
What’s Included
-
1x YK-11 (Myostine) - 60 capsules -
1x Ligandrol (LGD4033) - 60 capsules
-
1x Testolone (RAD140) - 60 capsules
-
1x Ibutamoren (MK677) - 60 capsules
Lab Tested
Third-party verified
Fast Shipping
3-5 business days
24/7 Support
Expert guidance
Product Description
The most powerful bulking stack available, combining the most potent muscle-building compounds for maximum mass gains. This elite stack includes YK11, Ligandrol, Testolone, and Ibutamoren, designed for serious athletes seeking extraordinary muscle growth.
Each product is manufactured to pharmaceutical standards and third-party tested for purity. This stack is reserved for experienced users who demand the ultimate in muscle-building potential and are ready for dramatic transformation.
63 reviews for Bulking Bundle
What are the Key Benefits of SARMs Bulking Bundle?
Explosive muscle growth
Massive strength gains
Enhanced recovery
Myostatin inhibition
Improved sleep quality
Maximum muscle density
Ingredients & Dosage
Active Ingredients
YK-11 (Myostine)
10mg per capMyostatin inhibition
Ligandrol (LGD4033)
10mg per capLean muscle building
Testolone (RAD140)
10mg per capStrength and power
Ibutamoren (MK677)
10mg per capGrowth hormone support
Purity & Quality
Third-party lab tested 
99%+ purity guaranteed 
24-month shelf life How Does Bulking Bundle Work?
This stack represents the pinnacle of muscle-building supplementation, combining myostatin inhibition with powerful anabolic SARMs and growth hormone support. YK-11 removes genetic limitations on muscle growth, while Ligandrol and Testolone provide massive anabolic effects.
Ibutamoren supports the entire process through enhanced growth hormone release, improving recovery, sleep quality, and overall anabolic environment. The combination creates an unprecedented muscle-building effect that far exceeds natural limitations.
Users experience rapid muscle growth, dramatic strength increases, improved recovery, and substantial changes in physique within weeks of starting this stack.
Key Actions
How to Use SARMs Bulking Bundle?
Dosage
Follow individual product dosing carefully
Timing
Spread throughout the day
Cycle Length
6-8 weeks followed by a 4-week break
Important
Dietary supplement use only
For experienced users only. Monitor response closely and consider PCT.
Looking for something else?
Is maintain lean muscle mass and strength during caloric restriction your primary goal? Explore Cutting Bundle available at CORE SARMS.
Frequently Asked Questions
The bundle includes YK-11 (Myostine), Ligandrol (LGD4033), Testolone (RAD140), and Ibutamoren (MK677) – the ultimate bulking stack.
Advanced users typically gain 9-13 kilograms of muscle during a 6-8 week cycle with this powerful stack.
No, this is an advanced stack for experienced users who have completed multiple SARM cycles and understand their response.
While generally well-tolerated when used responsibly, some users may experience mild effects such as increased appetite, water retention, or temporary fatigue. It’s important to follow recommended dosages and monitor your body’s response throughout the cycle.
Use a substantial caloric surplus with high protein intake (1.5g per lb bodyweight) to maximize the muscle-building potential.
Related products
Mass Stack
Add to Cart 
Customer Reviews
Exactly what a bulk should feel like
Appetite has been big
Scale is finally moving up! Exactly what I bought it for
Write a Review
admin-core-sarms-wp –
Third-party tested and high quality. Exactly what I was looking for my fitness goals.
Chen Wei –
Great great
Ryan Campbell –
As a beginner, I approve.
Jason P. –
yyeyeyeye great
George Wilkinson –
The product is not fake and works: everything is fine. I don’t know why some people are hating.
Matthew Hodgson –
Works wonders
Leon –
If you need to bulk, then this is the real deal.
Itai Ben David –
If you need to bulk, then this is the real deal.
James Whitaker –
It works 5/5
Oliver Bennett –
Decent overall- no complains
Benjamin Clarke –
Good
Jack Harrington –
great customer service
Thomas Fletcher –
I like that there is no after taste.
Ryan King –
Ran the Bulking bundle With RAD-140 at 10mg, MK-677 at 10, LGD-4033 at 10 and YK-11 at 5 (since its strong). Strength kicked in surprisingly fast and MK-677 made me enjoy eating bigger portions. Honestly pumps from this bundle were crazy, no other sarm or stack made me look like that. But this stack definitely on the stronger side with some previous experience needed
Edward Lawson –
Fast delivery, overall good products, works well.
Samuel Thornton –
You guys are MVP
Danielx B. –
boy is getting big.. will post an update mn
Eyal Shapira –
Boys, I went from 53kg to 85kg in 4 months 4 MONTHS.
Samuel Okoye –
A read a lot of bad experiences here.. but I got my supplement delivered in 9 days to middle of nowhere. I am very saticefied
Henry Collins –
I was skeptical at first, but my order got sent the next day and even arrived only 6 days later in UK.
Adam Scott –
Ran the Bulking bundle With RAD-140 at 10mg, MK-677 at 10, LGD-4033 at 10 and YK-11 at 5 (since its strong). Strength kicked in surprisingly fast and MK-677 made me enjoy eating bigger portions. Honestly pumps from this bundle were crazy, no other sarm or stack made me look like that. But this stack definitely on the stronger side with some previous experience needed!
Mirjam Saku –
I bulked to the max!
Blaine D. –
Magical stuff!
Claude Oliver –
Tell me why would you NOT want to try this
R. Emil –
I finally look good for summer
Odell Hal –
10/10
Braylen Granville –
Great stuff
Skyler Cale –
Im love with this stack
Buck Carey –
Honestly really happy with this. Would buy again
Bertolt Erwin –
Good qualit, exactly what I wanted
Roderick Colt –
No issues at all. Solid experience. recommend!
Brenden Dirk –
good
Indigo Keith –
Im in love with this bundle
Chandler Chad –
This is the only thing that helped me bulk up
Prince Lyle –
Good
Lockie Domenic –
I really enjoyed this stack, picked up some good weigt with it
Dennis Selby –
Strong stack!!
Ossie Richie –
9.5/10
Walter Mitchell –
If you’re loking for a strong stack – this is it
Cleo Hartman –
Reviews are on point about this bundle
Jayden Terrell –
Finally – something I can gain weight with
Zackary Donnelly –
Took everything except MK-677. No complaints
Laurie Read –
Perfect for a good bulk
Cliff Butler –
YK11 was a bit too much for me in this stack
Miles Waters –
Good bundle
Roberto Khan –
Expected a bit more ngl
Ahmed Cartwright –
Im finally fat (in a good way), thanks to this bundle
Nicolas Jackson –
This was stronger than I expected, but for a experienced guy – gold
Doug Howe –
Most trustable brand I have tried yet
Wilfred King –
took this stack for 2 months and the results were crazy!
Phoenix Holden –
mk677 was the key in this bundle for my weight gain
Byron Flores –
Rad140 and Mk677 the best combo!!!
Ramesh Lee –
I really like the bottle design
Clive Humphreys –
I added cardarine for endurance and everything worked out perefectly
Desmond Eastwood –
This finally made me gain weight
Adam Warner –
well assembled bundle.
Rajinder Crouch –
Four weeks in and my whole frame looks different. gymbro thought i’d been at it for months lol
Jeffery Hoyle –
Never been able to eat enough to properly bulk but the appetite on this is something else entirely. finally hitting my calories every day and the size is just coming, best decision I made in a while
Max Hough –
Strength is climbing and I can see the size coming on slowly.
Niall Swain –
Genuinely did not expect to feel this stack as fast as I did. by week 2 the mk677 had my sleep dialed in completely and the yk11 and rad140 combo just hit like a truck. I am moving weight I was not moving 3 weeks ago and the fullness is unreal
Bernard Sweeney –
Scale is finally moving up! Exactly what I bought it for
Simon Mercer –
Appetite has been big
Ashleigh Thornton –
Exactly what a bulk should feel like