Profile Design Threadless Converter
Best adapter for cyclists upgrading vintage bikes with modern stems.
This is the bridge between vintage frames and modern geometry. It sacrifices the classic aesthetic of a quill stem for the superior adjustability and stiffness of a contemporary threadless setup, making it an essential upgrade for anyone looking to modernize their ride’s cockpit.
$23.50
Who it's for
- Vintage bike owners upgrading to modern, lightweight cockpit components
- Cyclists seeking precise ergonomic tuning for a more comfortable ride
- Performance riders wanting a stiffer, more responsive front end
Who should skip it
- Minimalist builders prioritizing a sleek aesthetic and low bike weight
- Novice mechanics uncomfortable with precise measuring and cutting tasks
- Commuters who frequently adjust handlebar height for different riding styles
Performance breakdown
Compatibility Range
Seamlessly bridges the gap between vintage forks and modern stem standards.
Structural Integrity
Aluminum construction and chromoly hardware provide a secure, flex-free cockpit connection.
Installation Simplicity
Upgrading your front end requires only basic tools and minimal mechanical effort.
Adjustment Versatility
Offers significant height range to dial in your ideal riding position.
Weight Efficiency
Lightweight alloy keeps the front end nimble without sacrificing necessary strength.
Cockpit Modernization
Instantly unlocks access to a wider variety of contemporary handlebar setups.
Key Specs
Compatibility
Converts 1-inch threaded steerer to 1-1/8 inch threadless
Material
Alloy shaft, with steel hardware
Fork Size
1" (Threaded)
Stem Size
1-1/8" (Threadless)
Quill Size
22.2mm or 25.4mm
Stack Height
40mm
Adjustability
80mm above minimum insertion line
Total Length
153mm
Weight
184g (1"- 1-1/8th), 189g (1-1/8th - 1 1/8th)
Know before you buy
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Ask Metto anything about the Profile Design Threadless Converter before you decide.