Race Face Headset Spacer Kit Find the perfect height for your bike's cockpit with the Race Face Headset Spacer Kit. The Race Face Headset Spacer Kit includes four aluminum alloy spacers and a top cap, all of which are anodized black and have Race Face logos. The spacers included are one 2mm, one 5mm, one 10mm and one 15mm spacer. Features Kit includes 4 different sized spacers and a top cap (1) 2mm, (1) 5mm, (1) 10mm, (1) 15mm spacers Size1-1/8"Made out of aluminum alloy | Race Face | Headset Spacer Kit | Black | 1 1/8" | Aluminum