FSA Headset No.57CF. 1 x 1 1/8" Upper Bearing (TH873E). Also known as: MH-P03K, MR122, MR054 p03k TH873E, MR122, MR054, MR115, HSS20130K, PT-R401, AC3041 R2. 1 x 1.5" Lower Bearing (TH073). FSA Orbit 1.5 ZS Headset No.57 (Tapered steerer fork 1/ 1/8th and 1.5).
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UPPER - MR040 (TH873DJ) - 30.15 x 41 x 7.3 - 36/45. LOWER - MR019 (TH073DJ - 40 x 51.8 x 7.5 -36/45. FSA Headset Bearings. Headset bearings. Headset Bearing Kits. Individual Headset Bearings. Acros Headset Bearings. ).
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7075 aluminium crown race. - For head tube ID: 34mm. - Weight: 119g (include Alloy top cap). - Alloy top cover. - Stack Height 18.7+13.4=32.1mm. - Color: Black (as pic. WFS × XOUX. ).
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For 50mm OD head tube. Alloy top cover. Stack height: 15.8+2.1=17.9mm. 1.1/8" steerer.
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FSA Orbit UF 1-1/8 Threadless Sealed Bearing Headset , Black
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FSA Premium Headset Half ORBIT ITA - NO.9M/CUP/CC/12B/44-A 1.5 44.0mm Lower Grey FSA Premium Headset Half ORBIT ITA - NO.9M/CUP/CC/12B/44-A 1.5 44.0mm Lower Grey. Compatible with ID: 44.0mm head tube and 1.1/8" to 1.5" tapered fork.
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7075 aluminium crown race. - For head tube ID: 34mm. - Weight: 119g (include Alloy top cap). - Color: Gold (as pic. - Alloy top cover. - Stack Height 18.7+13.4=32.1mm. designed by. - For 1"1/8 steerer fork. ).
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Model: Orbit C-40. - For tapered 46mm/56mm OD headtube (= 42mm/52mm ID headtube). - For tapered fork steerer 1.5in to 1-1/8in. - 1.5in 36 degrees/ 45 degrees ACB Lower (compatible with carbon or alloy headtubes).
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