FSA 1 (i.e.) ZS49 28.6 - EC49 40 Headset

Product Description FSA 1 (I/E) is a headset for a bolted 1.5" head tube in combination with a tapered steerer tube (1.5" - 1 1/8"). Use: Designed for 1.5" upper and lower head tube diameters combined with 1 1/8" - 1.5" tapered forks. Specifications: Application: Enduro, All Mountain Top Cup: 1.5" Bottom Cup: 1.5" Steerer Tube: 1 1/8" - 1.5" tapered Design: zero stack (ZS), external cup (EC) Technical Information: Material: aluminium Bearings: angular contact ball (36°/ 45° ACB, upper), CBB Ø 7/32" x20 (lower) Upper Insert Depth: 10.7 mm Lower Insert Depth: 20 mm Top Stack Height: 7.1 mm Bottom Stack Height: 11.7 mm Top Outer Diameter: 49 mm Top Inner Diameter: 28.6 mm Bottom Outer Diameter: 49 mm Bottom Inner Diameter: 40 mm Seals: blue seal Top Cap: aluminium Features: for head tube inner diameter 49.57 mm = head tube outer diameter 55 mm forged top headset cup CNC-machined bottom headset cup total stack height: 18.8 mm Standardized Headset Identification System (S.H.I.S.): In order to clarify and bring uniformity to a sea of headset standards, manufacturers Acros, Cane Creek, Hope, Race Face, Reset Racing and Ritchey have agreed upon using a shared nomenclature, which will likely include more participating companies in the future. This system takes into account a combination of frame and fork dimensions. Both the top and bottom parts of the headset are marked by two alphanumeric identifiers. The first identifier indicates the type of headset (External Cup, Zero Stack, Integrated) and head tube diameter. The second identifier - separated from the first by a backslash - indicates the diameter of the steerer tube. When referring to a complete headset, the specifications of both top and bottom parts must be combined. Nomenclature: EC: Bearings contained within headset cups that are located outside of the frame (External Cup) ZS: Bearings contained within pressed-in headset cups where the cup and bearings rest inside the frame (Zero Stack) IS: Bearings that fit directly into a bonded or machined interface that is integrated into the frame (Integrated) Manufacturer Number: ZS49/28.6 - EC49/40: 130-0018N Contents: 1 x FSA 1 top headset cup incl. bearings 1 x FSA 1 bottom headset cup incl. bearings 1 x FSA headset cap 1 x compression ring 1 x FSA Ahead cap 1 x star nut with aluminium bolt 1 x crown race Weight: black | 1 1/8" - 1.5" tapered | ZS49/28.6 - EC49/40: 151 g Manufacturer: F.S.A. S.R.L. Via Francesco Petrarca. 4 20123 Milan Italy info@fullspeedahead.com