For bikes with integrated headsets (such as the Ritchey Road Logic and Swiss Cross), the WCS Integrated IS Headset stands out from all others. This alloy headset bearing features stainless steel angular contact sealed cartridge bearings with a titanium coating for corrosion resistance, and they are packed with Ritchey high-webbing grease.

Item number 33055337015 EAN 796941332606 Brands Ritchey Inner diameter lower bearing (mm) 34.1 Outer diameter lower bearing (mm) 46.8 Integration method Drop in (Integrated) Headset section Lower Inner diameter head tube bottom (mm) 47 Outer diameter head tube bottom (mm) 52 Bearing angle outer lower bearing (°) 45 Fork steerer diameter bottom (mm) 31.8 Headset size 1 1/4 Inch Bearing angle inner lower bearing (°) 45 Product Description Use:for 1 1/4" lower head tubes combined with 1 1/4" or tapered forks.Specifications:Application:Road, Cross CountryLower Bearings:1 1/4"Steerer Tube:1 1/4" or 1 1/8" - 1 1/4" taperedDesign:integrated (IS)Technical Information:Bearings:cartridge bearings (titanium-coated)Bottom Outer Diameter:47 mmBottom Inner Diameter:33 mmFeatures:series: WCS (World Championship Series)Sealed bearingsStandardized 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:330553337015 Contents:1 x Ritchey WCS drop-in bearing1 x crown race Weight: black | 1 1/8" - 1 1/4" tapered | IS47/33: 35 g Manufacturer: Ritchey Design Inc. 575 Old County Road San Carlos CA 94070 USA [email protected] Distributor: Cosmic Sports GmbH Leyher Straße 47 90763 Fürth Germany [email protected]