Headsets

- Forged steel cups with caged 5/32" ball bearings - TH-857 features a alloy top cover - TH Series: External Cup, traditional - S.H.I.S.: EC34/28.6|EC34/30 - Stack: 14.9mm/11mm - Color: Black - Weight: 126g

- 15.2mm/9.7mm CF IS-2-138 - 1-1/8" / 1-3/8", 36°/ 45° ACB - For tapered 45mm / 52mm OD head tube - For 1-1/8" to 1-3/8" tapered fork - Carbon fiber top cover - Angular Contact Bearing (black seal) - Stack Height 16.1mm - 65.4 grams