---
product_id: 229322391
title: "Bike Trunk Bag 17L-45L Bike Rear Rack Bag Waterproof"
brand: "rockbros"
price: "877 Lei"
currency: RON
in_stock: true
reviews_count: 8
url: https://www.desertcart.ro/products/229322391-bike-trunk-bag-17l-45l-bike-rear-rack-bag-waterproof
store_origin: RO
region: Romania
---

# 45L expandable capacity Waterproof with reflective rain cover Secure adjustable straps Bike Trunk Bag 17L-45L Bike Rear Rack Bag Waterproof

**Brand:** rockbros
**Price:** 877 Lei
**Availability:** ✅ In Stock

## Summary

> 🚴‍♂️ Elevate your commute with the ultimate all-in-one bike trunk bag!

## Quick Answers

- **What is this?** Bike Trunk Bag 17L-45L Bike Rear Rack Bag Waterproof by rockbros
- **How much does it cost?** 877 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/229322391-bike-trunk-bag-17l-45l-bike-rear-rack-bag-waterproof)

## Best For

- rockbros enthusiasts

## Why This Product

- Trusted rockbros brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Safety-First Design:** Integrated taillight mount and high-visibility stripes keep you seen on every ride.
- • **Rock-Solid Stability:** Crisscross adjustable straps ensure your bag stays firmly fixed on any bike type.
- • **Maximize Your Ride Storage:** Roomy 17-45L capacity with adjustable dividers for ultimate organization.
- • **Versatility Meets Portability:** Expandable side panniers plus shoulder and hand straps for off-bike convenience.
- • **Ride Confidently Rain or Shine:** Durable waterproof polyester with a bright reflective rain cover for night safety.

## Overview

The ROCKBROS Bike Trunk Bag offers a versatile 17-45L expandable capacity with adjustable dividers, crafted from durable waterproof polyester. Designed for all bike types, it features secure mounting straps, reflective safety elements, and convenient carrying options, making it perfect for daily commutes, day trips, and urban adventures.

## Description

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

## Features

- Max 45L Large Capacity: ROCKRBOS trunk bag has roomy cushioned interior can hold a lot of stuff, such as bike tools, shoes and extra clothing. Adjustable dividers making it conceivable to carry large cameras. 16L-45L capacity, many options for expansion.
- Versatile & Portable: Expandable double side bike panniers are hided by zippers and available when needed. You can unzip the expansion and fit clothes and shoes in the trunk bag. There are also shoulder and hand straps for carrying the rockbros bike bag with you.
- Sturdy Construction & Durbale: Well made and compact, strong material, good stitching and zippers function smoothly. Hold plenty for daily commuting and a day trip, handy for shopping at the store.
- Easy To Install & Stay In Place: Go straight across or crisscross the solid straps make the bike trunk to fix your bike rack firmly. Suitable trunk bag for mountain bikes, road bikes, leisure bikes, ebikes, etc.
- Compatible with Taillights & Water Bottle Holder: A spot in the rear bike rack bag to attach an tail light and high visibility stripes on the side, increase safety at night. Outside water bottle pocket with a cord to tighten which is helpful over rough roads. Come with a bright and reflective rain cover to throw over the whole bike bag.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Color | Black Grey |
| Size | 17-45L |
| Brand | ROCKBROS |
| Material | Polyester |
| Vehicle Service Type | Bicycle |
| Product Dimensions | 12.99"L x 9.45"W x 8.66"H |
| Item Weight | 893 Grams |
| Pattern | Solid |
| Mounting Type | Freestanding |
| Strap Type | Adjustable |
| Capacity | 45 Liters |
| Closure Type | Zipper |
| Handle Type | Shoulder Strap |
| Number of Compartments | 2 |
| Shell Type | Soft |
| Manufacturer | ROCK BROS |
| Automotive Fit Type | Universal Fit |
| UPC | 791966419127 |
| Item Package Dimensions L x W x H | 14.45 x 10.79 x 7.91 inches |
| Package Weight | 1.5 Kilograms |
| Item Dimensions  LxWxH | 12.99 x 9.45 x 8.66 inches |
| Brand Name | ROCKBROS |
| Number of Items | 1 |
| Part Number | A6-03BK-6/US |

## Product Details

- **Color:** Black Grey
- **Size:** 17-45L
- **Brand:** ROCKBROS
- **Material:** Polyester
- **Vehicle Service Type:** Bicycle

## Images

![Bike Trunk Bag 17L-45L Bike Rear Rack Bag Waterproof - Image 1](https://m.media-amazon.com/images/I/81MVlbWgcRL.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ We would buy this bag again!
*by D***G on May 18, 2025*

Summary: We would buy this bag again!Great rear storage bag for our Lectric brand electric bike. The center top pouch area holds six plastic bottles easily (water and diet soda in our case). The side pouches open and extend to larger side pouches, but we found we don't need the extra space. The side pouches easily hold the bike repair kit, charger, and bag rain cover. The bag easily attaches securely to the flat rear rack on our ebike via the bag's sewn on velcro straps.

### ⭐⭐⭐⭐⭐ Very good quality
*by A***R on June 17, 2025*

Very well constructed bag. I thought that the main storage compartment would be bigger but it will work fine for what I need.

### ⭐⭐⭐⭐⭐ It’s a good product
*by C***T on June 12, 2025*

It looks good on my bike man!

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**Shop now:** [https://www.desertcart.ro/products/229322391-bike-trunk-bag-17l-45l-bike-rear-rack-bag-waterproof](https://www.desertcart.ro/products/229322391-bike-trunk-bag-17l-45l-bike-rear-rack-bag-waterproof)

---

*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-20*