Threaded to ahead adapter 1″
Clean way to convert your threaded 1″ fork / headset to ahead to use clamp style stems.
You can measure which size you need by measuring the width of stem part that goes into your frame / headset, this is either this size, 25.4 mm (1″) or 28.6 mm (1 1/8)
— for the best result use a the BMX stem with a 15 mm spacer
— converts / extends the inside of your fork / headset (22.2 mm) to 1″ / 25.4 mm
— please note that you need a shim that goes from 1″ to 1 1/8″ to make a modern ahead stem work
— clean looking top cap solution that fits nicely on the top of your stem