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    20kg Bulk Box - Wagyu Sirloin Whole SB 8-9

    $2,120.00

    20kg Wagyu sirloin SB 8-9, 320 day grain finished. Extreme marbling, melt-in-your-mouth tenderness and elite eating quality for premium steak programs.

    Pickup available at Peter Augustus Store Camp Hill

    Usually ready in 24 hours


    Buy Diamantina 20kg Bulk Box - Wagyu Sirloin Whole SB 8-9

    Our Diamantina's 20kg Bulk Box of Wagyu Sirloin Whole SB 8-9 offers an elite steak experience with unmatched tenderness and flavor. Our Wagyu Sirloin, with a marble score of 8-9, showcases a beautifully intricate marbling that ensures a rich, buttery texture and savory flavor. Grain finished for a minimum of 320 days, the beef develops a consistent taste profile that reflects the high-end quality of Australian-sourced Wagyu. Our whole cut is versatile, performing exceptionally well in various cooking methods, ensuring each serving remains fresh and flavorful.

    Buyers seeking premium beef often choose our Wagyu Sirloin for its superior marbling and texture, ideal for both gourmet chefs and cooking enthusiasts. This cut appeals to those who appreciate the nuance of a well-marbled steak, offering a consistent dining experience. Diamantina's commitment to quality is evident in our breed and feeding program, making this an excellent choice for those desiring top-tier beef. Secure your purchase to enjoy the unparalleled quality of our Wagyu Sirloin Whole SB 8-9.

    Product Overview

    • 20kg bulk box of Wagyu sirloin whole (SB 8-9)
    • Grain finished for a minimum of 320 days
    • Highest-tier Wagyu with extreme marbling
    • Designed for premium wholesale and food service use
    • Australian family-owned

    Why Choose 20kg Bulk Box - Wagyu Sirloin Whole SB 8-9?

    Choose our 20kg Bulk Box - Wagyu Sirloin Whole SB 8-9 for its unmatched tenderness and rich flavor that promises a high-end steak experience.

    • Marble score SB 8-9 ensures superior marbling.
    • Grain finished for at least 320 days.
    • Sirloin cut in whole form for versatility.
    • Wagyu breed known for elite quality.
    • Originates from trusted sources in Australia.

    Performance & Quality

    • SB 8-9 grading for exceptional marbling intensity
    • Luxuriously tender, melt-in-your-mouth texture
    • Rich, buttery mouthfeel with outstanding juiciness
    • Deep, full-bodied Wagyu flavour profile

    Wholesale Advantages

    • 20kg bulk format for high-volume kitchens
    • Ideal for premium steak cutting and fine dining service
    • High yield with minimal trimming loss
    • Consistent top-tier quality across every box

    Delivery & Storage

    Our Wagyu Sirloin Whole SB 8-9 is securely packed for transit to ensure you receive it in optimal condition. 

    • Vacuum sealed for freshness 
    • Insulated thermal packaging with ice packs 
    • Refrigerated transport ensures cold chain integrity 
    • Refrigerate or freeze on arrival to maintain quality

    Who Should Choose This 20kg Bulk Box - Wagyu Sirloin Whole SB 8-9?

    Our 20kg Bulk Box - Wagyu Sirloin Whole SB 8-9 is ideal for catering professionals or restaurant owners seeking premium quality. This Wagyu sirloin is perfect for special occasions, enhancing any menu with its elite taste.

    • Home chefs preparing for large family gatherings 
    • Caterers looking to offer high-end steak experiences 
    • Restaurants aiming to feature gourmet-level beef dishes 
    • Food enthusiasts interested in bulk buying for events 
    • Retailers stocking premium Wagyu options

    Best Cooking Methods for Sirloin

    Our Wagyu Sirloin Whole SB 8-9, with its high marble score, excels in fat rendering and requires precise cooking methods to achieve optimal tenderness and flavor. When preparing our Wagyu Sirloin, consider these methods to enjoy the best steak experience:

    Pan Sear: Use medium-high heat for 3-4 minutes per side. Allow the natural marbling to render, enhancing the taste.

    Grill: Set to high heat, cook 4-5 minutes per side. Direct flames bring out the sirloin’s deep flavors, with a perfect char.

    BBQ: Maintain a medium heat, cook for 5-6 minutes each side. This method locks in juices, maintaining the Wagyu's signature tenderness.

    Oven: Preheat to 180°C, roast for 10-12 minutes. Finish with a high-heat sear to the crust while keeping the inside succulent.

    Enable your culinary skills to shine by selecting the Wagyu Sirloin Whole SB 8-9, ensuring each meal is a memorable delight.

    Striploin

    Striploin, also known as Sirloin, New York Strip, or Porterhouse (when bone-in), is a premium cut prized for its bold flavour and balanced tenderness. It comes from the short loin of the cow and features a fine grain with a satisfying bite. It's a favourite among chefs and home cooks alike for its generous marbling and robust, beefy taste.

    Frequently Asked Questions

    Our Beef

    Where does our beef come from?

    All of our beef is from our parent company Stanbroke Beef. This is important as the quality of the beef and ultimately your eating experience is determined by the care that has been shown to the animal during each stage of the production process. Any undue stress the animal experiences at any stage of its life is detrimental to the beef it will produce.

    As Stanbroke owns and operates each stage of the production process, strict best practices are followed to ensure the animals always receive the highest of care and that’s why at Peter Augustus we can guarantee the quality of our product each and every time.

    SB Marble Scores

    What is an SB Marble Score?

    The SB Score measures intramuscular fat (the white flecks in the meat). Higher scores mean more marbling, which results in superior tenderness, juiciness, and a richer, buttery flavour.

    Which score should I choose?

    • SB 0–2: Leaner, traditional beef flavour with a robust texture.
    • SB 3–5: Our "everyday premium" level; a perfect balance of flavour and tenderness.
    • SB 6–10: The indulgent peak, featuring extreme marbling for a melt-in-your-mouth experience.

    Meat Quality & Colour

    What is vacuum sealing and how does it extend shelf life?

    Vacuum sealing removes air from the packaging, slowing oxidation and bacterial growth to extend freshness and shelf life. When stored correctly at 0–4°C, you can expect the following guide:

    • Beef primals & whole cuts: up to 28 days
    • Beef (steaks): up to 21 days
    • Beef (bone-in): up to 14 days
    • Lamb: up to 28 days
    • Pork: up to 10 days
    • Ham: up to 30 days
    • Sausages: up to 9 days
    • Chicken (frozen): up to 12 months
    • Salmon (frozen): up to 12 months
    • Smoked salmon: up to 30 days

    For longer storage, keep products frozen at -18°C, where vacuum sealed meat can last 1 to 3 years depending on the cut and consistency of temperature.

    Once opened, the shelf life reverts to that of standard fresh products, so we recommend consuming promptly.

    For longer delivery routes, some items may arrive partially or fully frozen to ensure they remain within safe temperatures during transit.

    Why is my steak dark in the vacuum pack?

    Our beef is vacuum sealed to lock in freshness and extend shelf life by removing oxygen. This can cause the meat to appear darker or slightly purplish due to natural myoglobin, which is completely normal.

    Once opened, simply let your steak rest out of the packaging for 10 to 20 minutes. As it’s exposed to air, it will “bloom” back to its natural rich red colour. Rest assured, your beef is fresh and perfectly safe to enjoy.

    Is it safe to eat?

    Yes. If the “Use By” date is within range your meat is fresh. Any colour variation from vacuum sealing is normal and will return to its natural red once opened and allowed to bloom.

    Delivery & Packaging

    What are your delivery fees?

    We offer a range of pickup and delivery options to suit you:

    • Free pickup is available from our Camp Hill store in Brisbane. Simply select pickup at checkout.
    • Free shipping is available on subscription-only orders.
    • Free shipping is automatically applied to orders over $200.
    • Refrigerated delivery starts from $30 (including GST), with final pricing based on your location, order size, and weight. Enter your address at checkout to calculate the exact rate.

    All delivery orders are packed in a food-safe, insulated chilled box with ice packs to maintain safe temperatures throughout transit.

    Can I request custom cutting instructions?

    Yes, our butchers are happy to accommodate custom cutting requests where possible and safe to do so. For example, you may like a rump cap portioned into steaks. Simply specify your preferred thickness or weight per piece, such as approximately 2.5cm or 300g portions.

    You can add these instructions in the “View Cart” section before checkout using the notes box or send them through to us via email.

    How is my order kept cold?

    We use specialist refrigerated courier partners to keep your order within the cold chain from dispatch to delivery. Each order is packed in a thermal carton lined with VISYCELL® sustainable insulation, a food-grade, biodegradable material designed to maintain a consistent chilled temperature throughout transit.

    We also include large 1kg ice gel packs in every box to help keep your products at optimal temperature. Our packaging has been tested to maintain safe temperatures for a few hours after delivery when left in a shaded area.

    My box arrived looking a bit scuffed. Is the meat okay?

    While the outer carton may show signs of handling during delivery, the internal insulation is specifically built to protect the contents and preserve freshness.

    What should I do if I have concerns?

    If you detect any issues with the temperature or seal of your products upon arrival, please contact our team immediately so we can find a solution for you.