Cannondale OEM SL Headset Expander Plug w/ 5mm Top Cap

Cannondale SL Headset Expander Plug w/ 5mm Top Cap

OEM Compression Plug | 1-1/8″ Steerer | K35058

The Cannondale SL Expander Plug (K35058) is a genuine factory replacement compression plug designed for 1-1/8″ steerer tubes, including carbon and alloy forks. Featuring an integrated 5mm top cap/spacer, it simplifies cockpit setup while ensuring proper headset preload and secure stem clamping.

Clean setup. Precise preload. OEM performance.

Integrated Top Cap Design

• Built-in 5mm top cap spacer
• Eliminates need for separate spacer under stem
• Clean, streamlined cockpit appearance
• Simplifies installation

Proper Headset Preload

• Ensures accurate bearing preload
• Improves steering smoothness and alignment
• Increases clamping surface inside steerer

Essential for maintaining headset performance and longevity.

Designed for Carbon & Alloy Steerers

• Compatible with 1-1/8″ steerer tubes
• Ideal for carbon fork applications requiring compression plugs
• Safe and secure alternative to star nuts

OEM Cannondale Replacement

• Factory-correct fit and function
• Designed for modern Cannondale road and performance bikes
• Reliable long-term durability

Specifications

• Brand: Cannondale
• Product: SL Expander Plug with Top Cap
• Steerer Compatibility: 1-1/8″
• Top Cap Height: 5mm (integrated)
• Application: Headset preload / compression
• MPN: K35058

What’s Included

✔ Expander plug
✔ Integrated 5mm top cap
✔ Installation bolt

Ideal For

✔ Carbon fork setups
✔ Road bike cockpit builds
✔ Headset service or replacement
✔ Clean cockpit configurations

Why Choose Cannondale SL Expander Plug?

• OEM Cannondale quality
• Integrated 5mm spacer design
• Ensures proper headset preload
• Compatible with carbon and alloy steerers
• Clean, simplified cockpit setup

The Cannondale SL Expander Plug w/ 5mm Top Cap (K35058) delivers a clean, reliable solution for headset preload and cockpit setup — designed to match modern performance bike standards.