Publicado Por En julio 30, 2026 The PROMAX adjustable stem is a high-quality bicycle component made of aluminum, designed for various bike types including city, hybrid, mountain, and road bikes. The quill stem type has a 25.4mm clamp diameter and steering tube diameter, with a length of 9 inches and a weight of 443 grams. This sleek black stem comes with a set that includes the stem itself, offering a comfortable and ergonomic ride for cyclists looking to upgrade their bike's performance.