Expander Kit HC-08 , 1-1/8″ Carbon Steerers

Secure & Precise – CNC Alloy Expander Plug for Carbon Forks

Designed specifically for carbon steerer tubes, this CNC-machined aluminum expander plug provides a safe and reliable alternative to traditional star nuts. It ensures even pressure distribution, protects the fork’s inner wall, and delivers consistent preload for your headset system.

Compatible with 1-1/8″ threadless steerers (ID 22.2–23.6mm), the plug expands smoothly and locks firmly in place—perfect for high-performance road and MTB setups. The lightweight CNC alloy top cap adds a clean, premium look to your cockpit.

Key Features:

• Ideal for carbon fork steerer tubes

• Fits 1-1/8″ threadless steerers (ID 22.2–23.6mm)

• CNC-machined aluminum top cap – lightweight & corrosion-resistant

• Safe, damage-free installation – no hammering required

• Smooth expansion and secure fit for optimal headset preload

Ride with confidence—this expander plug ensures your cockpit stays tight and responsive mile after mile.