MSX Mainstream Panniers and Saddlebag Review – First Impressions

Last Updated on 8 February 2026 by Cycloscope

MSX Mainstream Panniers and Saddlebag Review
First Impressions

For our African bicycle expedition, we wanted the sturdiest and most reliable panniers available. Road conditions here range from terrible to worst, and we don’t want to worry about bags jumping off or being torn apart by the ubiquitous thorn trees.

On our quest for the best bicycle panniers, we came across MSX mainstream bags and thought they might be what we needed. We were already using their handlebar bags and liked them a lot.

We contacted Joachim from MSX Mainstream, and he agreed to provide us with their latest products for testing and review under extreme conditions.

In this blog post, we’ll share our first impressions of these bags and provide technical information and specs.

The New MSX-Mainstream Panniers

Early this year, MSX Mainstream launched its new line of panniers and bikepacking bags. It consists of:

• The SLR 55 MX – Front Controller Bags: 26 liters capacity bike pannier with roll-up magnetic closure
• SL 55 ZX luggage carrier bags: 26 liters capacity pannier with roll-up closure, top flap cover, internal pockets, and front zipper
• Aqualung saddlebag: 18 liters, reducible to 9 liters
• The CLS 55 MX handlebar bag: 8.8 liters, rigid frame

They also manufacture a bikepacking-style handlebar bag and a waterproof backpack, which we won’t treat in this article. All of these products, including the saddlebag and the handlebar bag, are 100% waterproof.

We’ll spend a few words, though, about their interesting Core Backcountry Icon bike shorts, modular and versatile shorts that became a kind of second-skin to us.

Who needs MSX Mainstream products?

You might have noticed there are no traditional small front panniers in this line, the two models of bike panniers available the SLR 55 MX and the SL 55 ZX both have a humongous capacity of 26 liters each! 

The SLR (called the Front Controller) can be reduced to 15 liters by rolling the roll-top closure more times, but it’s still a big (and a bit heavy) pannier. This choice seems to target the long-distance expedition cyclists, those (like us) who live their lives on the road and are glad to swap a few grams more for a sturdy, reliable, and versatile pannier.

At the same time, MSX recently launched its bikepacking line, including a saddlebag and a roll handlebar bag. The saddlebag, in particular, sets itself apart from most manufacturers with a totally waterproof, though versatile design that is probably going to claim an important place in the bikepacking market for itself.

This seems to be the actual brand strategy of MSX-Mainstream, catering to these two segments of the market (bikepacking and long-distance expedition), to those who want the best of reliability for their adventures off-the-beaten-path… no compromises.

MSX Bike Pannier mounting system (and other elements in common)

MSX Panniers have one of the sturdiest-looking mounting systems ever seen in a bike pannier. The bottom clamp can be attached to 3 different points and rotated 360 degrees. Two of these points can also slide into a variety of positions to ensure optimal attachment to any rack. A plastic panel protects this system (named T-BONE) in this particularly stressed area.

The top fastening features the proprietary OneTouch V8 system (OTS-V8 ), allowing one-handed operation of the two upper locking hooks.

This locking system ensures good stability, no torsion, and rattle-free seating on luggage racks. It is compatible with luggage carriers with pipe diameters up to Ø 16,5mm, and it is supplied with adapters to fit rack diameters from Ø 8mm to Ø 11mm.

Both series of panniers also feature two lateral plastic rings that can be used to attach a shoulder belt or even to fasten additional gear on the outside.

The TOP-CENTER closing direction offers the advantage of adjusting the bag packing volume according to the desired number of rolling operations. Fewer rolling operations allow more packing volume – More rolling processes reduce the desired packing volume. An added value compared to bags with a locking direction to the side-down

Our First Impressions on the MSX Panniers Mounting System

Having bike panniers that do not risk detaching and getting tangled up in the spokes was our priority for this African bicycle trip; that’s exactly what happened with our old Crosso Panniers, with Elena risking her life in a serious accident.

Although we haven’t had the chance yet to test the MSX mounting system on really-really-really bumpy roads like those of Lesotho, we did, anyway, hit some very technical single-track this last month… the result was: absolutely no problem! The MSX mainstream panniers feel like they’re glued to the rack, with no rattle whatsoever, let alone coming off.

The One-Touch system is very comfortable for taking the bags on and off the racks, and the adjustments at each mounting point make it perfectly fit our Tubus racks.

Reflective Elements

For this new product line, MSX-Mainstream improved its reflective elements. They are using these cool PLUS/MINUS symbols (recalling the magnetic fastening system), which are very visible at dusk and even in total darkness, ensuring high passive safety in traffic.

With a diameter of 75 mm (on the panniers), this system guarantees a great reflection performance. The same elements are also featured on the handlebar bag and saddlebag.

Our First Impressions of the MSX reflective elements

The reflective elements are big and very bright. During a camping night, you can appreciate how shiny they are by pointing a flashlight at them. We don’t cycle at night, and Africa lacks tunnels, so we haven’t tested them in real-world conditions yet. They seem to make the panniers very visible even in daylight.

The SLR 55 MX – Front Controller Bags

Even though they are called “Front Controller”, these panniers can be used on either the front or rear rack. Despite being huge, they don’t cause problems on the front thanks to the intelligent mounting system (already described above), which is placed in the center of the bag. They’ll have an optimal ground clearance even on 26″ wheels and a low rack.

The closure system is a typical top roller without additional cover components. Instead of the classic buckles, though, they boost an MSX proprietary magnetic buckle, which makes opening and closing operations very easy, even with one hand.

These bike panniers also feature a small zippered inside pocket. Like all MSX bags, they are 100% water and dustproof. 

Construction design

• DIN 60529 Conical Toploader
• reinforced roll-top
• PLUS-MINUS magnet technology
• QuickLock system with one-hand operation
• Three-point mounting OTS-V 8 pipe Ø 8mm to Ø 16.5mm
• Reflective security elements: PLUS-MINUS symbol elements

Height/width/depth: 600 mm / 380 mm / 140 mm

Volume: 26 liters/unit – 52 liters/pair -> reducible to 15 liters/unit – 30 liters/pair

SL 55 ZX luggage carrier bags

The SL 55ZX bicycle panniers are the upscale version of the MSX line. While they feature the same mounting system as the SLR 55 MX (OneTouch + T-BONE), they also have a very robust additional top handle for hand-carrying.

Additional elements are a 100% waterproof zippered front pocket, adding an extra storage compartment, a removable big inner pocket, and a conical top flap cover.

This series features traditional buckles instead of the magnetic system used on the SLR 55 MX.

Construction design:

• Cover flap with design elements
• 100% waterproof (IP67 – DIN 60529)
• Roll closure: Closing direction TOP-CENTER
• Front side extra compartment: Aquaseal 100% waterproof
• Reflective security elements: PLUS-MINUS symbol elements
• QuickLock system with one-hand operation
• Large inner pocket: 1 piece per pair
• Three-point mounting: OTS-V 8
• pipe adapters: Ø 8mm to Ø 16.5mm

Height/width/depth: 600 mm / 380 mm / 140 mm

Max. Pack Volume: 26 liters/unit – 52 liters/pair

Weight: 1250g

Our First Impressions on the MSX Bike Panniers

It’s dry season now in Southern Africa, so we didn’t get to test the MSX Panniers’ waterproofness, although we honestly have little doubt about their effectiveness.

The Front Rollers allow for very easy access to the gear, we are indeed using them to store the stuff we need more often, like food for example. The Luggage Carriers really seem bombproof, and the external pocket is great for storing common-use tools.

About their mounting system, we already gave our opinion in the paragraph above.

MSX Aqualung Saddlebag

MSX just launched its bikepacking series with this seriously competitive saddlebag. Unlike most popular bikepacking brands, the Aqualung saddlebag is 100% waterproof. The material is a TPU-3 abrasion-resistant fabric with lamination on both sides.

Its solid construction features a semi-rigid top reinforcement at the contact point with the saddle, protecting the bag from scratches or cuts. It also has an elastic cord and an additional adjustable strap for attaching gear externally, and is suitable for mounting an optional tail light.

The mounting system consists of two wide, extra-strong HYPALON velcro straps that fasten to the seat post, and two tensioned buckles that attach below the saddle.

The MSX Aqualung saddlebag doesn’t swing or rattle; its mounting system has proven to be solid so far. Closure can be either done top or side-wise. It comes in seven different colors. Suitable for Aero Seatposts and Carbon Seatposts.

Construction Design

• Creative Jet-Wing Design Shape
• Self-supporting anchor construction
• Dimensional stability: Compact, four-sided internal reinforcement
• Position fix Seatpost: 2x extra strong HYPALON Velcro straps
• Material: TPU-2 laminated / PVC-free
• Exposed areas: Double-layer fabric reinforcement in black
• 100% waterproof: IP67 – DIN 60529
• Reflector elements: PLUS-MINUS reflective – Ø65mm

Volume: Max. 18 liters, reducible to 9 liters

Weight: 578 grams

Applications: Offroad / MTB / Touring / Gravel Bike

Our First Impressions on the MSX Aqualung Saddlebag

First time for us to try a bikepacking saddlebag, so we don’t have any terms of comparison. It’s a much more convenient solution than a traditional rolltop dry bag.

The mounting system is very effective, and the saddlebag doesn’t move at all, even on extremely bumpy roads. Keep in mind that, as a good practice, it’s always better to store heavier gear closer to the saddle to avoid any possible swaying.

I’m using the external attach point to store rain gear, which is thus very quickly accessible without opening any bag and risking other gear getting wet.

The CLS 55 MX – 100% waterproof handlebar bag

This revamped version of the MSX-Mainstream Handlebar bag definitely sets itself as one of the best handlebar bags in the market. Stiffened with rigid plastic on all sides, with a reinforced lid and the bomb-proof Clickfix mounting system, this is as sturdy as a handlebar bag can get. It can hold up to 8kg of stuff!

It comes with a flexible internal separator that allows the user to create different compartments as they please. It also has two internal pockets (one on the lid and one on the inner side) and two small external side pockets to ensure everything is stored properly and always on hand. An additional velcro patch on the lid allows you to attach a map case or any other velcro element.

Two side rings to attach the included shoulder strap turn it into a very comfortable “purse” to carry on your walks. The strap is padded and doesn’t hurt even when the bag is fully loaded.

The opening-closing system again features the PLUS-MINUS magnets, the two buttons opening in opposite directions to make it almost impossible for the bag to open up on bumps. This system allows a simple one-handed operation of the bag cover. Moreover, it’s optionally adjustable for right or left-handers.

The Clickfix system comes with 2x clamp modules for handlebars with tube diameters up to Ø 26.0mm (C26) and 2x clamp modules for tube diameters from Ø 26.1mm to Ø 31.8mm (C31.8). An optional Clickfix module for E-bikes is available.

The usual reflective elements, with a diameter of 65mm, provide strong reflection.

Construction design

• Waterproofness: IP56 – DIN 60529
• Lid opening: One-handed operation / left-right-handed
• Lid closure: Self-closing / 4 x neodymium magnets
• Mounting system: KlickFix system module A (series), KlickFix system module E (e-bike)
• Shoulder belt: padded/adjustable length
• Variable compartment division: Flexible divider max. 3 compartments 

Width/height/depth: 256 mm / 235 mm / 154 mm

Volume – load: 8.8 liters / 8 kg /

Weight: 760 grams

Our Impressions on the MSX Handlebar Bag

We got to test the previous version of this handlebar bag during our recent North European tour, and we can guarantee that not a single drop of water gets in, even under a serious downpour like the ones we constantly experienced in Norway.

If properly mounted, the Clickfix system is incredibly stable, and the bag doesn’t move even when heavily loaded. The CLS 55 MX is just perfect as a camera bag or for storing your most valuable items, such as money and passports. It can be quickly detached and carried with you, so you never lose sight of the important stuff.

Back-Country Icon Bike Shorts

With 19 years of history and over 711,000 units sold, the Back-Country Icon Bike Shorts are a flagship product for MSX.

This is again a modular product, comprising a pair of padded cycling shorts that can be connected to the main shorts via a row of pushbuttons.

The padded shorts feature an ergonomically shaped, 7mm-thick seat pad with an ACS system that keeps butt sores away, even on long rides.

The external shorts are great for any outdoor activity. All exposed, stressed areas, like the buttocks and sides, are made of pure RipStop microfibre, making them rainproof. This is an extremely light, but particularly durable fabric.

An adjustable, vertically arranged ventilation system in the front area of the two-leg warmers helps regulate airflow manually during activity, making these shorts comfortable to wear even in extremely hot climates. The shorts have two zipped lower pockets, one zipped back pocket, and two regular side pockets. They are adjusted around the waist through a buckled strap.

Our First Impressions on the Back-Country Icon Bike Shorts

Great shorts, really! Super-comfortable, almost waterproof, ventilated, lots of pockets. The padded bike shorts are good quality (although our Sigr shorts offer more padding).

The vertical zippers for ventilation are a really great idea. Overall, a perfect way to cycle comfortably without looking awkward (in certain areas of the world, cycling clothes can be frowned upon).

Warranty and part replacement

The modular design of each MSX Mainstream product allows all components to be replaced at any time; parts are available from the official MSX Mainstream website.

Warranty for defects resulting from inadequate or defective processing of the materials or components is 5 years from the date of purchase, but includes lifetime technical support.

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