MPart Ahead Stem Adapter Shim  £3.99

A split aluminium shim that fits over a 25.4 mm (1 inch) steerer tube changing the outer dimension to 28.6 mm (1-1/8 inch).

• Allows the use of a stem designed to fit 1-1/8 inch steerer tubes where greater choice is available.
• Black anodised finish with laser etched detail.