Patented dual-stage lock ensures smartphone stays secure on rough terrain
Dual-sided lever head allows flexible phone viewing angles on various stem angles
Ultra-light aircraft-grade CNC-machined aluminum construction for strength without added weight
Quick twist-and-lock mechanism enables fast attachment and detachment
Minimalist design with black hardware and lever for a clean, unobtrusive cockpit
Summarized by Shop
Save space in your bicycle's cockpit with our Quad Lock® Stem Cap Mount or Quad Lock® Stem Cap Mount Adjustable. Both securely install between your bicycle's stem and stem cap, offering compatibility with a large variety of stem angles.
SECURE MOUNTING
These are our lightest and strongest bike mounts. Engineered from ultra-light aircraft-
Material
Aircraft-grade CNC-machined aluminum
Color
Black
Compatible Bike Types
Road, Mountain, Hybrid
Pattern
Solid
Included Spacers
5 mm headset spacer, 3 mm Quad Lock 360 index mount spacer
Fits Stem Diameters
28.6 mm (1 1/8 inches)
Summarized by Shop
4.8
195 ratings
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Worked perfectly on my Trek Domane SL4. Easy to install and no problems using it. Does what I wanted it to, which was to open up my handle bar area for a bag.
Anonymous · June 30, 2026
I've now put a mount on each one of my bicycles, a stem mount and a bar mount and I'm very happy with both. the phone case fits great and the intuitive design of this system makes me feel like anyone could figure this out and benefit from your product. I wanted to take my phone out of my pocket while riding and have the piece of mind that it would be secure to my bike and this system has given me that. Thanks for asking!
J
Jason · June 18, 2026
Great product. Quick and easy install. Clean look on the bike. Super secure and no rattling as you ride down the road!