Arundel Sideloader and OtherSideloader Cage $60
For dual-suspension mountain bikes, carrying two water bottles can be difficult if not impossible. A side-loading cage can help. Arundel’s Sideloader is the best cage of this type I’ve used. Many side-loading cages don’t work that well in reality. The Arundel does and looks great at the same time.
For the most part I used the Sideloader mounted on my 29er seat tube. This makes it a right side (drive side) entry. The OtherSideloader is a left side (when on seat tube) version.
It made carrying a large bottle possible, if only just, and allowed much better access when I carried a small bottle. I never lost a bottle and the 32-gram weight certainly isn’t heavy.
The dual mounting holes help make tight fits more workable. At $60, the Sideloader isn’t cheap, but it does fill a special need category in a lightweight, highly functional cage.