KustomCaps laser-etched headset caps are designed to fit 1 1/8" headsets and measure 1 1/4" (32mm) in diameter. This is the most common size on modern bicycles. (We also have caps in black only for larger 1 1/4” headsets.)
Our traditional domed caps weigh 9 grams and flat caps weigh 5 grams. They are both made of 6061 aluminum. Our headset bolts are made of 7075 aluminum are M6 x 30mm in size and weigh 3 grams.
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