Dropper Post Collar

With the dropper post adapter from Apidura, you can also securely attach your saddle bag to dropper seat posts. It is designed to limit the suspension travel to prevent damage to the post or the bag. The adapter fits mountain bike seat posts with 30.9, 31.6 and 34.9 mm lower diameter and is light to fit. It is made of injection-molded, glass fiber-reinforced polyamide and the shims are made of silicone. It fits all saddle bags that are attached with a maximum 25 millimeter wide strap.