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Shimoda Designs L25 RST Core Unit for Mirrorless Cameras

BH #SHCORUM25RST • MFR #520-452
3 reviews
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Shimoda Designs L25 RST Core Unit for Mirrorless Cameras
Key Features
  • Insert for Action X25 Backpacks
  • Rear, Side & Top Camera Access
  • Customizable Interior Divider Set
  • EVA Protective Shell
This L25 RST Core Unit for Mirrorless Cameras from Shimoda Designs features padded, adjustable dividers that cushion and organize your camera equipment and accessories, while also providing fast and easy access on the fly. The insert fits in Action X25 backpacks, making it possible to conveniently organize your camera equipment apart from other travel essentials on location or during storage and transport.
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$119.95
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Shimoda Designs Core Unit Overview

This L25 RST Core Unit for Mirrorless Cameras from Shimoda Designs features padded, adjustable dividers that cushion and organize your camera equipment and accessories, while also providing fast and easy access on the fly. The insert fits in Action X25 backpacks, making it possible to conveniently organize your camera equipment apart from other travel essentials on location or during storage and transport.

This Core Unit includes a lightweight and water-resistant multipurpose skin that functions as a storage case for when your gear is at home and not in use. It keeps the Core Unit sealed and protects against dust. It can also be used as a packing cell and filled with clothing or other common items to be tucked into your backpack or carry-on roller.

Rear, Side, and Top Access
  • The rear, side, and top access integrates seamlessly with the side access of Shimoda's Action X25 backpack. It also allows top camera/lens access through the zipper at the base of the expandable roll top, plus standard rear access to the entire camera system.
Compatibility
  • Action X25 backpacks
UPC: 816779026123

Shimoda Designs Core Unit Specs

Color
Black
Carry/Transport Options
Handle
Type of Closure
Zipper
Interior Type
Insert with Adjustable Dividers (Hook & Loop)
General
Dimensions
Exterior
17.7 x 10.2 x 5.1" / 45 x 25.9 x 13 cm
Interior
16.9 x 9.4 x 4.7" / 42.9 x 23.9 x 11.9 cm
Weight
1.2 lb / 0.5 kg
Packaging Info
Package Weight
1.895 lb
Box Dimensions (LxWxH)
20.2 x 9.6 x 5.3"

Shimoda Designs Core Unit Reviews

Got it for R6Mii mounted to RF 200-800

By Sheri
Rated 5 out of 5
Date: 2026-02-28

I purchased this cube so I could have my RF200-800 mounted and ready to use in field. I also purchased the Shimoda Action25 at the same time. I needed a bag and pack that I could also put under my plane seat. With this cube in, I am fairly certain it won't fit with the 17" max on the plane I'm taking, but without the large cube in it, the bag will fit. Assembled for in field use, I can easily one handed pull out my camera and lens by the tripod collar and access the 70-200 2.8 or the 1.4 tc from the side access pocket. I will be shooting from boats, kayaks and just hiking walking. I needed top access with small footprint for my main lens/body combo. The best part is I can have the lens hood mounted and ready to go. The R6mii sits about a 1/2" inch higher than the cube with the hood mounted.

Holds a holly trinity and one extra body

By L25 RST From a DSLR to Mirrorless Transition
Rated 5 out of 5
Date: 2025-12-01

I got this unit because the RST that the Action X25 V2 comes with is too small for my needs. I was worried that it would not fit everything I had but I still gave it a try. I am very happy to share that the L25 RST can hold a holly trinity (mix of old and new lenses) with space to add a detach battery grip and other accessories or a DSLR body on its own. In the pictures you will see a R5 Mark ii with a 24-70 2.8 attached, 70-200 2.8 (version 1), and on the top right corner a 16-35 2.8 version 3. On the top left you can fit a detach battery grip with caps and the EF-R adapter or a 7D mark ii DSLR or equivalent camera. Sadly, you can't store the camera with the grip attached. But that is not a deal breaker. If you have newer R lenses, the available space will be more. But for a mixture of old and new lenses, this is perfect. It took me several tries to get the set up correct. But once I got it to where I felt I could bring everything I needed, it was perfect. I can bring everything I need for a soccer or basketball game, as well as all the equipment I need for astro or deep sky astrophotography and landscape photography. I am looking forward to have adventures with my Action X25 and this RST.

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