FSA is proud to introduce the Premium Series, featuring high quality headsets and bottom brackets meticulously designed to meet the demanding needs of today’s bike builders and customers. Precision CNC products and high quality bearings are the key points of the brand new Premium Series, developed to provide increased durability and the highest level of performance. FSA’s proven know-how and knowledge in headset and bottom bracket manufacturing are the foundation of the new premium range. FEATURES: Integrated, semi integrated and external cup headset. Premium quality seals Premium quality stainless steel bearings, for greater durability and reliability. Laser etched graphic to easily identify the headset spec plus provides a higher quality look 44mm Internal HS ITA Upper Assembly 1 1/8 HEADSET TYPE: Threadless Internal Cup STEERER TUBE: Tapered, 1 1/8" MATERIAL: Alloy UPPER CUP: 44mm Internal Cup UPPER BEARING: 1-1/8" 36° x 45° ACB Sealed Bearing(Grey seal) 44mm External HS ITA Lower Assembly 1.5 HEADSET TYPE: Threadless External Cup STEERER TUBE: Tapered 1.5" MATERIAL: Alloy LOWER CUP: 44mm External Cup LOWER BEARING: 36° x 45° 1.5" ACB Sealed Bearing 51.8mm OD (grey seal) 56mm ZS Lower Assembly - Orbit IS HEADSET TYPE: Threadless Zero Stack STEERER TUBE: Tapered 1.5" MATERIAL: Alloy LOWER CUP: 56mm Flush Cup LOWER BEARING: 36° x 45° 1.5" ACB Sealed Bearing 51.8mm OD (grey seal)