Рульова колонка ZS headset призначена як запасна частина рами Trek 1500 Replacement part for many Trek road bikes 1 1/8" (28.6mm) ZS headset Steerer outer diameter 28.6 mm (1-1/8") Crown race inner diameter 30 mm Cup Insertion OD Semi-integrated Headtube ID 41 mm Stack height 9 mm Bearing type Sealed