Specification AgeRangeDescription : Adult Brand : Ritchey BulletPoint : NoThreadSet 1-1/8 Sotto Voce Black Upper: EC34 / 28.6 Lower: EC34 / 30 Headset Traditional A-HEAD Headsets For over 40 years the CHRIS KING NoThreadSet has been providing unrivaled heavy duty, smooth rotation headsets for many world champions, Grand Tour winers and avid riders around the world. The result is the synonymous with high quality headsets. ChrisKing will continue to provide the proven reliability of smooth rotation and overwhelming durability for many motorcycles that travel around the world. Regularly pour love (i.e. cleaning and grease up). Easy to maintain, ChrisKing bearings will last for an incredible long period of time. Features Consistently Manufactured in Portland, USA Manufactured in our own factory Shield Bearings boasting extremely durable and smooth rotation, Unique GripLock system that maintains high performance even in extreme conditions Includes silver logo "Bold" and "Sotto Voce" settings (Sotto Voce is available in Black, RED, NAVY, GOLD, and 3D Violet only) Compatible Fork Column Sizes: 1-1/8" Headsets (S.H. I.S. Notation): Up. per: EC34 / 28.6 Lower: EC34 / 30 BulletPoint1 : For 1-1" steerer BulletPoint2 : Alloy Cups BulletPoint3 : Bearing: Sealed cartridge, Ti-coated BulletPoint4 : 45/45 degree angular contact bearing BulletPoint5 : Titanium coated for corrosion resistance Color : Silver CompatibleDevices : Bicycles CompatibleWithVehicleType : Bicycle ConnectivityTechnology : Wired ControlMethod : remote Department : unisex EarpieceShape : Circle ExteriorFinish : Alloy Steel ExternallyAssignedProductIdentifier : 4938402706311 ExternallyAssignedProductIdentifier1 : 796941332613 ExternallyAssignedProductIdentifier2 : 0796941332613 ExternallyAssignedProductIdentifier3 : 00796941332613 ExternallyAssignedProductIdentifier4 : 04710636251337 GpsrSafetyAttestation : 1 HeadphonesFormFactor : On Ear HeadphonesJack : 3.5 mm Jack IncludedComponents : 1x Headset ItemDisplayDimensions_Height : 5 centimeters ItemDisplayDimensions_Length : 7 centimeters ItemDisplayDimensions_Width : 5 centimeters ItemDisplayWeight : 0.5 kilograms ItemName : Ritchey 2015 WCS Headset Lowers Drop in 52-56 mm IS52/40 ItemPackageDimensions_Height : 9.4 centimeters ItemPackageDimensions_Length : 3 centimeters ItemPackageDimensions_Width : 6.8 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : bike-headsets-and-accessories LeagueName : Cycling LoadIndex : 100 Manufacturer : Ritchey Material : Alloy Material1 : Stainless Steel Material2 : Aluminum MaximumWeightRecommendation : 200 grams ModelName : Star Nut Assembly 1.5 ModelNumber : RT306 NoiseControl : none NumberOfItems : 1 OemEquivalentPartNumber : 33-300-276_1,5" PackageLevel : unit PartNumber : 33-300-276_1,5" Pattern : Solid PitchCircleDiameter : 20 centimeters ProductDescription : Backed by a 110-year warranty and constructed in Fletcher, NC, the 110-Series headset is designed with no compromises in quality, durability, or finish quality. Zero stack uppers press into head tube with very little stack height. Lowers are either zero stack or external cup.Aluminum dual seal crown race protects lower bearingSealed stainless steel bearingsInterlok spacer compatibleCarbon-friendy compression ring captured in top cover, keeping shims in place110 year warrranty7075 T-6 aluminum cups machined in Fletcher, NCCompatible with tapered 1-1/8 to 1-1/2 steerer tubes, or straight 1-1/8 steerers with a conversion crown race (sold separately)Item SpecificationsColorBlackCrown Race40Bearing TypeCartridgeDefined ColorBlackS.H.I.S UpperZS44S.H.I.S LowerZS56S.H.I.S. Stem Clamp Diameter28.6 ThreadlessLower Stack Height4Upper Stack Height8 ProductSiteLaunchDate : 2015-07-01T13:54:30.962Z Size : 1,5" SpecialSizeType : HT 44-50mm ZS44/30 SpecificUsesForProduct : Cycling Style : Star Nut Assembly 1.5 SupplierDeclaredDgHzRegulation : not_applicable TargetAudience : Unisex TargetGender : unisex UnitCount : 1 UnspscCode : 43191609 WebsiteShippingWeight : 0.05 kilograms