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Mass 550 - 60ct.

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$44.99 $ 44.99
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Finaflex Mass 550

Finaflex Mass 550 is the most pivotal advancement in lean muscle acquisition ever introduced. MASS 550™ contains two of the most innovative and exotic bodybuilding ingredients available today. The novel combination of Letrosterone™ and Maslinic acid creates an anabolic environment that promotes lean muscle growth, increased protein synthesis, and a reduction in overall estrogen in the body.*

Letrosterone works to help reduce circulating androgens in the body that can covert into estrogen. Higher estrogen levels mean lower testosterone production in the human body. Reducing estrogen levels in the body allows athletes to maximize natural testosterone levels, boosting levels above their normal or baseline level.

MASS 550™ is built with Letrosterone™ a potent natural ingredient gaining popularity as a sports supplement. Letrosterone™ is a unique extract of Brassaiopsis glomerulata standardized for 10% dehydrololiolide and 20% n-benzoyl-l-phenylalanine methyl ester. Research has shown Letrosterone™ to posses effective anti-aromatase characteristics. Further research has isolated the existence of the two alkaloids dehydrololiolide and n-benzoyl-l-phenylalanine methyl ester that posses the anti-aromatase properties.

FINAFLEX® chemists have worked for over two years to not only isolate the two alkaloids that make Letrosterone™ effective as a sports supplement but to find an extraction method that allows the percentage of these extracts to be increased from the plant. Over the last two years FINAFLEX® chemists were able to increase the purity of Letrosterone™ up to 20 TIMES GREATER than the average Brassaiopsis glomerulata extracts currently being used by other sports nutrition companies. These results are verified by an independent 3rd party cGMP and DEA registered dietary supplement testing facility.

Imagine an ingredient that signals the body to increase protein synthesis, protein turnover, body mass, and muscle tissue all at once? Meet Maslinic acid, the naturally occurring ingredient that has a structure similar to steroid hormones and a proposed mechanism of action in cell signaling similar to testosterone. Maslinic acid has been shown in cell based studies and animal studies to produce a powerful anabolic effect by increasing whole body growth rate, regulating blood glucose, nitrogen retention, and increasing the synthesis of DNA and protein.

Protein turnover rate is the ratio of protein synthesis versus protein degradation. When your body is in an anabolic state (think growth state) you have more protein synthesis versus protein breakdown. If you have more protein breakdown than protein synthesis your body is in a catabolic state, literally destroying itself. In one recent study, Maslinic acid was shown to increase protein synthesis rate by more than 80%! This is exciting for all athletes looking to enhance sports performance.

MASS 550™ contains D-Aspartic Acid (DAA), Fenugreek, and Vitamin D3, all heavily researched ingredients shown to increase baseline natural testosterone levels.*

5.0 / 5.0
3 Reviews
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1 Star
Mass 550 - 60ct. | Finaflex
So far the supplement has help increase endurance strength throughout the work out. I don�?t seem to lose the strength like I usually do more towards the end of the workout.
I will be using this again.

Eric Lynn
June 10, 2014
What a great product excellent
What a great product excellent results
June 2, 2015
Helped me make good lean
Helped me make good lean muscle gains, all around a good product
March 31, 2015
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 3 questions Browse 3 questions and 3 answers
Is this a pro hormone?
A shopper on Feb 1, 2017
BEST ANSWER: Thats a question for the manufacturer
does this product help you gain weight?
A shopper on Jul 27, 2016
BEST ANSWER: It should help yes. It is a test booster.
Does this product mean i have to take liver repair from finaflex? if so when would i take that? when would i take that? would i stack it along with mass 550 or after? or is it not needed? i will be taking 1 cycle of this.
A shopper on Mar 11, 2016
BEST ANSWER: the main ingredient in this product is D-Aspartic Acid (DAA), and Fenugreek. you do not need to take liver care while taking this product. you can take it any time of day or before you work out.


As a dietary supplement take 2 capsules 1-2 times daily with food. Take Mass 550 every day, including non-training days. Increase protein intake during cycle of Mass 550 to maximize lean muscle and strength gains. For extreme results use 2-3 bottles of Mass 550 consecutively over a 40-90 day period. Do not use Mass 550 for more than 90 days consecutively.


Maltodextrin, Gelatin, Silica, Magnesium Stearate, Titanium Dioxide, FD&C Blue #1.

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* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
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