MID
Heavy Duty Headsets
PT-F21 / PT-F20
ZS44/31.8 | ZS56/40
1-1/4" Upper / 1.5" Bottom
Ø31.8 * ID44 * ID56 * 39.8
Height: 12.7+ 2.8= 15.5mm
Weight: 102g
Bearings: Sealed AC bearings
41.8 * 6 * 45° (R443)Upper
52 * 7 * 45° (R413)Lower
Material: AL6061-T6 cups w/ 7075 crown race
Finish: Anodized
Options PT-F20: Ø31.8 * ID44 * ID55 * 39.8
PT-F20 Lower cup OD 55mm
PT-F21 Drawing download