Quad Lock Stem Cap Phone Mount – 1-1/8" Steerer, Black, Aluminum

The Quad Lock Stem Cap Mount provides a clean, centered mounting solution for riders who want their phone directly above the stem. It replaces your standard top cap and integrates seamlessly with the Quad Lock system for a secure and minimalist cockpit setup.

Key Functional Details

• Direct stem cap replacement for a clean, centered mounting position
• CNC-machined aircraft-grade aluminum construction
• Compatible with all Quad Lock phone cases and adapters
• Includes 5mm headset spacer and 3mm index spacer for fit adjustment
• Reversible design to suit different stem angles (+/- 15° typical)
• Compact, low-profile mounting with minimal cockpit clutter

Technical Specifications

Compatibility & Technical Notes

• Fits bikes with standard 1-1/8" threadless steerer tubes
• Replaces existing stem top cap (requires proper headset preload during install)
• Compatible with all Quad Lock cases and universal adapters
• Best suited for bikes with neutral or moderate stem angles (+/- 15°)
• NOT compatible with threaded headset systems
• NOT compatible with oversized steerer tubes (e.g., 1.25" or 1.5")
• NOT ideal for bikes requiring frequent headset adjustments

Service / Ownership Context

This mount is ideal for riders who want a permanent, centered phone position without handlebar clutter. Installation requires removing the stem cap and correctly setting headset preload, so basic mechanical knowledge is recommended.

Fit & Use Signals

• Good Fit: Road, gravel, and MTB bikes with threadless headsets
• Good Fit: Riders wanting a clean cockpit setup
• Good Fit: Navigation-focused riding (phone centered in view)
• Not A Fit: Bikes with threaded headsets
• Not A Fit: Oversized steerer tubes
• Not A Fit: Riders uncomfortable adjusting headset preload