NITTO UI-12 (Ahead) | A steel ahead stem that beautifully complements chromoly bikes

A beautiful TIG-welded stem unique to NITTO, designed for compatibility with chromoly frames.

If you're looking to combine an ahead system with a classic chromoly frame, NITTO's UI-12 is a natural choice.

Unlike typical aluminum machined stems, it features a unique design crafted from chromoly pipes with TIG welding. It pairs well with slender frames and steel forks, bringing a cohesive look to the entire bike.

Beyond its aesthetic appeal, it boasts high rigidity and durability. By adopting a modern 31.8mm handlebar clamp, it maintains a classic feel while accommodating a wide range of handlebar choices.

From touring bikes and gravel bikes to commuters, this ahead stem embodies NITTO's characteristic functional beauty.

Features

• Ahead stem designed for compatibility with chromoly frames
• TIG-welded construction using chromoly material
• Slender, beautiful, and classic silhouette
• Compatible with modern 31.8mm handlebars
• Achieves both high rigidity and durability
• Ideal for touring, gravel, and commuter bikes
• High-quality Made-in-Japan finish, characteristic of NITTO

SPEC

• Model: UI-12
• Material: Chromoly (TIG welded)
• Handlebar Clamp Diameter: 31.8mm
• Steerer Clamp Diameter: 28.6mm (1-1/8 inch)
• Angle: 80°
• Stack Height: 46mm

If you're combining an ahead stem with a chromoly frame, this is one of the top candidates.

While a typical aluminum stem can sometimes give a slender frame a somewhat sterile impression, the UI-12 has a soft presence unique to steel, maintaining the overall aesthetic of the bike.

It balances a classic look with modern standards, making it recommended for customizing touring bikes and gravel bikes. This is a stem for those who pay attention to every detail.