4kg protein powder

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Whether it’s whey protein concentrate or isolate, 4kg is the perfect size to get you through your entire fitness routine. It provides enough servings for even the most intense workout regimens and will last a long time before needing to be replenished.

However, with so many options available, it’s a challenge to find the perfect protein powder for your needs. So to help you out, here are our best 4kg protein powders available in our store.

1kg protein powder

Rule 1 Whey Blend Protein

RRP: $49.95 - $259.95

3kg protein powder

MAXS Absolute MASS

RRP: $89.95 - $139.95

3kg protein powder


RRP: $99.95 - $159.95
RRP: $89.95 - $159.95

4kg protein powder

BSN Syntha-6

RRP: $89.95 - $239.95
Out of stock

1kg protein powder

Rule 1 Whey Blend Protein 1lb

RRP: $39.95

Our best 4kg protein powders

International Protein Heavy Weight Mass Gainerr (4kg)

If you’re looking to put on some weight and pack on the muscle, International Protein Heavy Weight Mass Gainer is what you need. This mass gainer supplies an impressive 1050 Calories per serving, comprised of over 80g of protein and 160g of carbohydrates.

All these nutrients are optimally utilised with the addition of DigeZyme, a patented blend of digestive enzymes that ensure efficiency with absorption. The best part? You don’t even have to sacrifice flavour as this supplement comes in both chocolate and vanilla options that can be incorporated into a smoothie or stand-alone. Get ready for a heavyweight gain!

Max’s Absolute Mass (4.54kg)

Gaining mass can take a lot more effort and calories than normal whey protein use, but with Max’s Absolute Mass, it doesn’t have to. Packed with an impressive 1180 calories per serve when made with 500ml of milk, this mass gainer contains 60g of quality protein to ensure muscle protein synthesis and growth.

Even easier is the delicious taste of the two flavours – Vanilla Ice Cream and Choc Mud Cake – that makes this shake impossible for you not to finish! Make sure your gains are maximum with Max’s Absolute Mass.

Max’s Clean Mass (4.54kg)

When it comes to lean bulking, Max’s Clean Mass provides a great solution. With each serving giving you only 460 calories when mixed with water, you get the protein and carbs that your body needs for muscle gains but without all the unnecessary fat.

Its 2:1 ratio of carbohydrates to protein ensures that your macronutrient intake remains balanced and contains no added sugars, so you don’t have to worry about loading up on unhealthy ingredients. That, coupled with its ability to act as a meal replacement or calorie booster, makes Clean Mass an ideal choice for anyone looking to gain mass gradually.

BSN Syntha 6 Edge (3.8kg)

BSN Syntha-6 Edge is a next-level post-workout supplement blended for supreme protein performance. This innovative formula has increased its protein content with more muscle-building power and fewer carbs and fat, guaranteeing that signature’s great taste and flawless mixability.

Get ready to fuel up with 24g of protein per serving thanks to the blend of whey concentrate, isolate and hydrolysed whey protein. You will also have six delicious flavours to choose from, including Cookies & Cream, Banana, Chocolate and Salted Caramel – so you can start getting creative in the kitchen.

Upgrade your fitness journey today and grab a tub of BSN Syntha-6 Edge – your muscles won’t regret it!

Rule 1 Whey Blend (4.5kg)

Rule 1 Whey Blend is a high-quality complete source of protein, and it provides an impressive 24g of protein per serving. It stands out because of its amazing flavour and its smooth texture. This product also contains whey protein isolate, which makes it a highly bioavailable source of protein.

In addition to the natural flavours, they offer unique flavours like Pumpkin Spice, Toasted Cinnamon Cereal, and Café Mocha that distinguish it from other ordinary whey proteins. So if you’re looking for a tasty way to get some post-workout goodness, Rule 1 Whey Blend is definitely one to consider.

Other protein powder sizes we stock

We also stock a range of other protein powder sizes, including 1kg, 2kg, 3kg and 5kg tubs. So no matter what your weight gain or muscle-building goals are, you will be able to find the perfect supplement for you in our selection.

Protein powder flavours we stock

We have a huge range of different protein powder flavours available to choose from.

Shop protein powder by diet

Have specific dietary requirements? Not a problem, check out our different ranges below.


What is the best protein powder for gaining mass?

It really depends on your individual needs and preferences. For example, if you’re looking to gain mass quickly with high-calorie shakes, then Max’s Absolute Mass is a great option. On the other hand, if you’re trying to gain lean muscle slowly, then clean mass or Rule 1 Whey Blend will be more suitable for you. Ultimately, it’s up to you to decide what works best for you!

Is whey protein good for gaining mass?

Yes, whey protein is an effective way to gain muscle mass as it contains all the essential muscle-building amino acids your body needs. It is also easily digestible and rapidly absorbed into your system, making it ideal for post-workout recovery.

What is the best time to take protein powder?

The best time to take protein powder is post-workout, as your body needs a supply of amino acids and other nutrients for optimal muscle growth and repair. However, it can also be taken before or even during workouts for an extra boost of energy. Additionally, you can also integrate it into your daily diet for a slow release of energy and to promote muscle growth.