Most of the common front forks on the market are 28.6MM. Most stems also have 28.6MM installation specifications. However, there are very few 25.4MM front forks. In order to install 28.6MM style stems, a 25.4-28.6 conversion kit is required.
Zanthicia Road Bike Headset Spacers Premium Bike Headset Spacer Sturdy Durable Easy Installation Lightweight Fork Tools Are Easy To Install Just To Fix Nut Front Fork
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INOOMP 4pcs Bicycle Headset Spacers for Road Bike Front Fork, Aluminium Alloy, Black, 1.5 Inch Tapered Fork Base, Enhanced Strength with Easy Installation, for Mixed Terrain Usage
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