Product update: triple bosses on all Alloy rack systems including S, X, and Alloy AeroPacks


We are pleased to announce the release of a key update to all alloy arches used for our rack systems. The new versions of the AeroPack Alloy, S Three Trunk Rack, and X Three Trunk Rack all now incorporate triple cage mounts on the rack. This article gives a rundown of the reason we made the change, and what we hope you’ll enjoy about the new update.

One of the great things about the AeroPack is that it is suitable for all kinds of cycling, including bikepacking, racing, road, singletrack, and more. Having listened to feedback from customers, including demands for greater flexibility, we have added triple cage bosses on both sides of the rack for greater cargo and water capacity. You can fit any brand of cargo cage (although we do recommend our own Cargo Cages of course) or standard water bottle cages.


AeroPack Alloy – with side pannier mounts

The cage bosses use the industry standard of M5 Thread with 64mm between centres to increase the amount of accessories that will fit. That in turn means a greater range of carrying options, with a max load per side of 4.5kg (1.5kg per rivet nut). The main arch of the AeroPack Alloy and S Three rack proves to be the perfect ‘real estate’ as they are well clear of any potential abrasion points. Adding bosses also avoids the need to change any frame components on a bike, making for a cleaner adaptation and putting minimal strain and stress on the frame. We also took the liberty to add triple bosses to our pannier bag compatible ‘X’ alloy arch to give riders the ultimate choice in load carrying.

The industry norm for cage bosses is aluminium rivet nuts. These are cheap and easy to install but in general aluminium threads have their limitations: threads can be easily damaged, especially if being used repeatedly. Our triple bosses utilise stainless steel rivet nuts, for a harder-wearing thread, with a special coating which prevents galvanic corrosion with the aluminium rack arch and galling when using stainless steel screws. The coating is a black organic microlayer topcoat, composed of a highly cross-linked binder system.




All the triple boss versions are available as complete builds for new customers. For those who already own and run the AeroPack or Trunk systems the updated alloy arch is available to purchase as a replacement main rack arch . See the full specifications below.





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