BX4 Evo

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BX4 Evo

  • Space miracle for every adventure
  • Top comfort even fully loaded
  • Fits everyone perfectly
The space miracle for tours and multi-day alpine adventures. The BX4 Evo has a space for everything needed to for your more epic adventures with its volume of 30 liters. Even fully loaded, the pack provides optimal wearing comfort and can be precisely adjusted to the anatomy of every rider.
Price $ 199.95 (Without VAT**)
€ 199,95 (With VAT**)

Technical Specifications

BX4 Evo
All-Mountain/Trail, MTB-Touring
2000 g*
One Size
approx. 30 Liter l
Nylon, Polyester
Rain Cover
$ 199.95 (Without VAT**)
€ 199,95 (With VAT**)

*Weights may vary in production. **Price can vary by country.


Optimal Storage System Ideally arranged pockets and compartments

For trips tasing multiple days, the organization of your pack is ke! The BX4 Evo has many well thought-out compartments, mesh pockets and dividers for quick access. The organization includes a large front compartment with 3 inner mesh pockets and a key pocket, a small zipped pocket on the front, two large elastic side pockets with tool compartments and pump pocket, two large elastic hip pockets, a map pocket (in the front flap), a loop for the smartphone pocket on the shoulder strap and a pocket with rain cover in the bottom of the backpack. It’s your multi-day pack that has a space for everything!

Ergon backpack BX4 Evo with many practical inside pockets.

Multifunctional Frontflap The slightly different helmet holder

The BX4 features a practical front flap for the helmet or wet clothing. When this flap is not in use, it can be easily folded up neatly and secured with Velcro. This allows you easy access to the lower portion of the divided main compartment at any time.

The front flap of the Ergon BX4 Evo offers additional storage space outside the backpacks.

Back Cushion Comfortable and ventilated

Comfortable padding ensures maximum comfort at the contact points and provides optimal air circulation, which contributes to excellent ventilation of the back.

Ergon backpack BX4 Evo with ventilated back padding.

Hip Belt with Pockets Comfortable load distribution

The wide hip belt distributes the load comfortably and relieves strain on the shoulders. It contains two elastic zipper pockets, perfect for your mobile phone, keys or other small items allowing for easy access at all times. Two thumb loops allow the belt to be easily adjusted with just one hand.

Ergon backpack BX4 Evo with practical hip belt.


  • MountainBIKE
    Even with the highest load, the carrying system of the BX4 Evo offers top comfort.

    – MountainBIKE 05/21

  • BIKE
    With the BX4 Evo, the ergonomics experts are launching their new space miracle for multi-day tours.

    – BIKE 09/2018

  • Mountainbike
    Even with the highest payload, the elaborate carrying system of the BX4 offers top carrying comfort. (…) Perfect organisation and handling thanks to many useful pockets and compartments.

    – MountainBIKE 06/2018, Test winner AlpenCross- backpacks

  • BIKE
    The Ergon BX4 EVO is storage wonder! It offers a total of 22 compartments and subdivisions. The structure of the pack is excellent.

    – BIKE 06/2020, mark: very good


One Size Fits All

With the completely revised 5-way adjustable carrying system, the back length of the pack can be easily adjusted to fit sizes S to XXL.

Ergon backpack BX4 Evo with 5-fold adjustable carrying system.

Adaptive Carrier System

Thanks to the „Adaptive Carrier System“ the backpack fits as one to the body throughout every maneuver on the MTB. The self-adjusting harness support pulls the lower part of the backpack over the shoulder straps closer to the body making the fit ergonomically ideal for every rider. Additionally, the hip belt can be shortened to the desired length as needed.

Ergon BX4 Evo backpack with Adaptive Carrier System.

Ergonomically flexible aluminum rail

The flexible aluminum moulded rail nestles ergonomically against the back. This plate can be easily fine-adjusted at any time.

Ergon BX4 Evo backpack with flexible aluminium shaped rail.

Self-adjusting shoulder straps

The movable, self-adjusting Ergon shoulder straps optimally form to the body shape of each rider. This provides a stable connection of the pack to the rider, even at the lower back. The construction is particularly robust due to its aluminum D-rings.

Ergon BX4 Evo backpack with self-adjusting shoulder straps.


“I don’t care if it rains, if the sun shines or whatever: As long as I ride my bike, I’m the happiest person on earth.”

— Mark Cavendish