Thomson Stem Ahead X4 1 1/8 Inch 31.8Mm 110Mm Black

The Thomson X4 A-head stem is a premium threadless stem designed for 1 1/8 inch steerers and 31.8 mm handlebars, providing a stiff, precise front-end feel for confident control. Engineered for reliable clamping and long-lasting durability, it’s an excellent choice for upgrading a worn stem or enhancing cockpit fit on MTB, trekking, and performance-oriented bikes where solid steering response is essential.

- Thomson X4 threadless stem for 1 1/8 inch steerers
- 31.8 mm handlebar clamp fits common modern oversized bars
- Strong, stiff design supports precise steering and confident control
- Reliable clamping helps keep bar alignment secure on rough rides
- Ideal upgrade when replacing worn or flexy stems
- Suitable for MTB, trekking, and performance bike cockpit setups
- Clean finished look pairs well with modern handlebars and forks

Specifications
Brand: Thomson
Model: A-Head
Type: Stem
Diameter: Ø 1 1/8"
Steering Head: Ø 31.8 mm
Handle Length: 110 mm
Color: Black