Home / 1.0 Degree Angle Headsets / 1.0 Degree EC44-ZS55 Angle Headset - To Suit Tapered Steerer Tube 1.0 Degree EC44-ZS55 Angle Headset - To Suit Tapered Steerer Tube £69.99 £58.33 (ex. VAT) RRP: £69.99 1.0 Degree EC44-ZS55 Angle Headset - To Suit Tapered Steerer Tube £69.99 £58.33 (ex. VAT) RRP: £69.99 Stock Status: In Stock Headtube Length: SET 1 90-99mm SET 2 100-109mm SET 3 110-119mm SET 4 120-129mm SET 5 130-139mm SET 6 140-149mm Reducer Crown for 1 1/8" Fork?: Not Needed Please Include (+£7.99) Add to your Wish List Description Specifications: Fits headtube internal diameter: Upper - 44mm: EC44 Fits headtube internal diameter: Lower - 55mm: ZS55 Upper cup insertion depth: 9mm Lower cup insertion depth: 11.5mm Upper cup Stack height: 11mm - Total upper stack height including bearing cover: 16mm Lower cup Stack height: 2.5mm Upper Bearing: 41mm OD, 45 x 45 Degree AC sealed bearing Lower Bearing: 52mm OD, 45 x 45 Degree AC sealed bearing Upper cup is external (EC) - will fit frames using ZS44 (ZS) upper headcup as standard. To suit tapered forks. If you are running a 1 1/8" fork you will need to purchase the reducer crown from the drop down menu - this headset comes as standard with a crown race to suit tapered forks. Split type 7075-T6 aluminium crown race for simple, tool free installation Headset comes complete with top-cap (star-nut included), bearings and crown race - all parts required for fitment.Simply order the correct headset from the list of available head tube lengths below, if your frames head tube length is not listed please contact us. We use the 'SHIS' standard to label our headsets - the numbers refer to the internal diameter of the headtube and the letters refer to the type of headcup: EC = 'External Cup' and ZS = 'Zero Stack' - For more SHIS info please refer to the Park Tools information page - Standardized Headset Identification System | Park Tool Use our angle headset guide for information and guidance on choosing the right angle headset for you: Angle Headset Guide For installation instructions > Click Here < Attributes GTIN: 5060894511230 Colour: Black To Suit: Tapered Forks Upper Cup Size: 44mm Lower Cup Size: 55mm Brand: Works Components Product Code: WCH4455-1D-1 Weight: 0.14kg Related Products 1.5 Degree EC44-ZS55 Angle Headset - To Suit Tapered Steerer Tube £69.99 £58.33 (ex. VAT) Bearings - Tapered Steerer Tube Headsets £14.99 £12.49 (ex. VAT)