Vision Metron 4D Handlebar

The Vision Metron 4D uses a standard 31.8 mm clamp diameter, which is compatible with the vast majority of modern road stems on the market.

The compact drop design features a shallower 125 mm drop and 80 mm reach, making it easier to transition between the hoods and the drops without needing extreme flexibility. It is designed to keep you in a more comfortable, sustainable position for longer rides.

Internal routing does require more patience than external routing, especially when threading hydraulic hoses or electronic wires through the bar. We recommend having a professional mechanic handle the installation if you are not experienced with internal cable management.

The round top profile provides a traditional, familiar grip that is easy to wrap with bar tape and comfortable for riders who prefer resting their hands on the tops during climbs or steady efforts. It avoids the sometimes polarizing feel of flat, aero-profile bars.

While the Metron 4D is engineered primarily for road cycling performance, its carbon construction is durable. However, it lacks the flared drops typically found on dedicated gravel bars, so it may not offer the same stability on loose or technical terrain.