【Keep the OEM Look, Seamless Gap Mount】Specifically engineered for the Birdy 3, the TRP2395L mounts directly into the clamp gap of your factory Stem Cap—no need to replace the original head cap. Crafted from high-strength aluminum alloy with full CNC machining and an anodized finish, it effortlessly expands your bike's carrying capabilities with TRIGO functionality while preserving the original OEM aesthetic.【Precision Bolt Pitch, Lightweight & Rock-Solid】Tailored for the asymmetric stem cap structure of the Birdy 3, this model is designed for the 28.5mm bolt pitch side. Weighing a mere 23.7g, it provides a remarkably stable yet ultra-lightweight solution—making it the ideal, hassle-free upgrade for riders who prefer to keep their original stem cap.