ROCKBROS
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ROCKBROS Bike Trunk Bag 17L-45L Bike Rear Rack Bag Waterproof
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ROCKBROS Bike Trunk Bag 17L-45L Bike Rear Rack Bag Waterproof
Large Capacity, Versatile, Sturdy Construction, Easy to Install, Compatible with Taillights & Water Bottle Holder.
ROCKBROS Bike Trunk Bag 17L-45L Bike Rear Rack Bag Waterproof
Item #: 56914256

ROCKBROS Bike Trunk Bag 17L-45L Bike Rear Rack Bag Waterproof

Item #: 56914256

NZD 174

Price Details

Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )

*All items will import from US

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Order now and get it around Wednesday, August 26
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Large Capacity, Versatile, Sturdy Construction, Easy to Install, Compatible with Taillights & Water Bottle Holder.
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What Stands Out

Versatile Capacity
Expandable from 17L to 45L, this bike trunk bag adapts to your needs, providing ample storage for short rides or long tours without compromising space.
Waterproof Design
Crafted with waterproof materials, the ROCKBROS trunk bag ensures your belongings stay dry during unexpected weather, making it perfect for all-season cyclists.
Easy Installation
Designed for quick installation on any rear rack, this bag allows you to seamlessly attach and detach, enhancing convenience for daily commuters and weekend adventurers alike.

Product Details

Browse a wide range of ROCKBROS Bike Panniers and accessories for your bicycle. Find the perfect cargo carrier bag for your travel needs at Ubuy Cook Islands.
Compatible with Vehicle TypeBicycle
Mounting TypeRack Mount
Strap TypeAdjustable
Capacity45 Liters
Closure TypeZipper
Handle TypeShoulder Strap
Number of Compartments2
Pocket DescriptionCargo Pocket
Automotive Fit TypeUniversal Fit
Wheel TypeUniversal
ColorBlack Grey
PatternSolid
Style NameTravel
Material TypePolyester
Shell TypeSoft
Size17-45L
Item Dimensions L x W x H12.99"L x 9.45"W x 8.66"H (33 x 24 x 22 cm)
Item Weight893 Grams
Brand NameROCKBROS
ManufacturerROCK BROS
UPC791966419127
Manufacturer Part NumberA6-03BK-6/US
Model NumberA6-03BK-6/US
Unit Count1 Count
BrandROCKBROS
MaterialPolyester
Vehicle Service TypeBicycle

Who Should Buy?

Suitable For
  • Commuters

    Ideal for daily riders needing a waterproof, spacious bag for carrying essentials like laptops and work gear.

  • Touring Cyclists

    Great for long-distance cyclists requiring extra storage for clothes and gear while maintaining waterproof capabilities.

  • Weekend Adventurers

    Perfect for casual cyclists who want a durable and easily accessible bag for day trips or picnics.

Not Suitable For
  • Mountain Bikers

    Not suited for aggressive trails due to potential instability and design not focused on rugged off-road conditions.

Product Description

ROCKBROS Bike Trunk Bag 17L-45L Bike Rear Rack Bag Waterproof

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the capacity range of the ROCKBROS Bike Trunk Bag?

    Answer: The ROCKBROS Bike Trunk Bag has a versatile capacity that can be adjusted from 17 liters to 45 liters. This flexibility makes it ideal for various biking activities, whether you’re going on a short city ride or embarking on a longer journey. The expandable design allows you to pack more for weekend trips while maintaining a compact size for daily commutes. This adaptability ensures that your essentials are always secure and easy to bring along.
  • Question: Is the ROCKBROS Bike Trunk Bag waterproof?

    Answer: Yes, the ROCKBROS Bike Trunk Bag is designed to be waterproof, which means it can withstand rain and various weather conditions. This feature is essential for cyclists who often ride in unpredictable climates or during light showers. The waterproof materials used help to keep your belongings dry, ensuring that your gear, such as electronics or clothing, remains protected while on the go.
  • Question: How do I attach the ROCKBROS Bike Trunk Bag to my bike?

    Answer: Attaching the ROCKBROS Bike Trunk Bag to your bike is straightforward, thanks to its user-friendly design. The bag comes with adjustable straps and hooks that securely fasten it to your bicycle's rear rack. This ensures a stable and secure fit, even on rough terrains. When you're ready to ride, simply position the bag on the rack, tighten the straps, and you'll be set for your adventure with confidence.
  • Question: Can I use the ROCKBROS Bike Trunk Bag for carrying groceries?

    Answer: Absolutely! The ROCKBROS Bike Trunk Bag is an excellent choice for transporting groceries. Its spacious inner compartment allows ample room for bags of produce, groceries, and other shopping items. The waterproof feature also means that you can ride without worrying about spills or unexpected rain, keeping your groceries safe and dry until you reach home.
  • Question: What materials are used in the construction of the ROCKBROS Bike Trunk Bag?

    Answer: The ROCKBROS Bike Trunk Bag is made from high-quality, durable materials designed to withstand the rigors of cycling. Its outer fabric is not only waterproof but also tear-resistant, which enhances its longevity. Additionally, the interior features padded compartments to protect your items from impacts and abrasions. This build ensures that the bag performs well, whether navigating city streets or hitting rugged trails.
  • Question: Is there a reflective feature on the ROCKBROS Bike Trunk Bag?

    Answer: Yes, the ROCKBROS Bike Trunk Bag includes reflective elements designed to enhance visibility during low-light conditions. This safety feature is vital for cyclists who ride early in the morning or after sunset. The reflective strips or patches catch light from car headlights, making you more visible to drivers and enhancing your safety on the road.
  • Question: What types of items can I store in the ROCKBROS Bike Trunk Bag?

    Answer: The ROCKBROS Bike Trunk Bag is versatile and can store a variety of items. You can safely carry everything from a change of clothes and cycling gear to snacks, tools, or electronics. Its adaptable size means it works for daily commuting or longer trips when you might need additional items. This capability makes the bag suitable for a wide range of cycling scenarios, including touring, errands, or leisure rides.
  • Question: Does the ROCKBROS Bike Trunk Bag have any internal compartments?

    Answer: Yes, the ROCKBROS Bike Trunk Bag is equipped with internal compartments to help organize your gear. These compartments allow you to separate tools from personal items, ensuring that you can find what you need quickly during your ride. This organizational feature is especially useful during longer rides, where keeping everything orderly can enhance your overall experience.
  • Question: How can I clean the ROCKBROS Bike Trunk Bag?

    Answer: Cleaning the ROCKBROS Bike Trunk Bag is a hassle-free process. Most of the surface dirt and grime can be wiped off with a damp cloth. For deeper cleanings, handwashing with mild soap and water is effective. Avoid using harsh detergents, as they can damage the waterproof coating. Regular cleaning helps maintain the bag’s appearance and functionality, ensuring it continues to serve you well on your rides.
  • Question: Where can I buy the ROCKBROS Bike Trunk Bag in Cook Islands?

    Answer: You can purchase the ROCKBROS Bike Trunk Bag conveniently from Ubuy in Cook Islands. Ubuy offers a wide selection of biking accessories, including this trunk bag, making it easy to find and order online. With reliable service and customer support, Ubuy ensures an excellent shopping experience for all your biking needs.

ROCKBROS Panniers & Rack Trunks A6-03BK-6/US Editorial Review

The ROCKBROS Bike Pannier for Bicycle is an excellent solution for carrying cargo or gear on the back of a bicycle or e-bike. Made with high-quality materials, including durable and sturdy zippers, this pannier has several compartments including two side cases that unzip for additional storage. It also features a waterproof rain cover with reflective details that provide enhanced visibility and keep the contents dry during inclement weather. With its adjustable straps and bungee cord system, the ROCKBROS Bike Pannier attaches securely to most bicycle rear racks. The interior dividers in the main compartment are removable, making it versatile enough to carry a variety of items. The main compartment expands from 7 inches to 9 inches, offering ample space for storage, clothes or gear. Moreover, the bag is machine washable in case it gets dirty but a soft brush will suffice for cleaning. Overall, the ROCKBROS Bike Pannier is an outstanding choice for cyclists who need extra storage space. It is versatile, durable, and stylishly designed to meet any users' demands.

Customer Reviews & Ratings

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Pros

  • Durable and sturdy material
  • Waterproof rain cover with reflective details
  • Removable interior dividers
  • Expandable main compartment
  • Adjustable straps and bungee cord system
  • Easy to clean (machine washable)

Cons

  • Some users might find the hook and loop straps difficult to use

Platform Trust & Buyer Confidence

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“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”

23 July 2026 · via Trustpilot
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“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”

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“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”

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“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”

22 July 2026 · via Trustpilot
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“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”

23 July 2026 · via Trustpilot
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Important information

  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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NZD 174

Order now and get it around Wednesday, August 26

QTY:

Secured transactionsecured transaction

PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.

Our Top Logistics Partners
  • fedex
  • dhl
Fastest cross-border delivery

Features & Benefits

  • Large Capacity - can hold bike tools, shoes, extra clothing, and large cameras.
  • Versatile & Portable - expandable double side bike panniers hidden by zippers, with shoulder and hand straps.
  • Sturdy Construction & Durable - made with strong material, good stitching, and smooth zippers.
  • Easy To Install & Stay In Place - solid straps securely fix the bike trunk in place.
  • Compatible with Taillights & Water Bottle Holder - spot for a tail light, high visibility stripes, and a water bottle pocket with a cord.
  • Bright and reflective rain cover included for extra protection.

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