Giant Contact OD2 Stem

OverDrive1 refers to a standard 28.6mm (1 1/8 inch) steerer tube, while OverDrive2 is Giant’s proprietary 31.8mm (1 1/4 inch) system. This stem is designed to accommodate both, making it a versatile choice if you are upgrading or swapping components between different Giant frames.

Yes, the stem includes titanium hardware for the faceplate and clamp. Using titanium helps keep the overall weight down while maintaining the necessary strength for a secure connection.

The recessed top cap and integrated upper spacer are designed to create a seamless, flush transition between the stem and your headset. This setup provides a cleaner aesthetic than traditional stems, though it requires careful alignment during installation to ensure the fit is flush against the steerer tube.

While it is engineered primarily for road cycling performance, the 3D forged 7075 aluminum construction is robust enough for light gravel use. However, its design focus is on stiffness and weight savings for road handling rather than the heavy-duty impact resistance required for aggressive mountain biking.

The faceplate width is 46mm. This is a standard width that provides a secure clamping surface for most modern road handlebars, ensuring even pressure distribution to prevent stress points on carbon or aluminum bars.