FSA SX Pro No.55 Semi Integrated Headset

Was £54.95
From £32.99
Save 39.96%
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Tweeks Cycles
£32.99
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Price last checked: 18/05/2026

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FSA SX Pro No.55 Semi Integrated Headset

The FSA SX Pro No.55 Semi Integrated Headset is for tapered 50mm/61mm OD head tube with forged alloy and CNC machined upper and lower cups.1.1/8" / 1.5", 36°×45° ACBFor tapered 50mm / 61mm OD head tubeFor 1.1/8" to 1.5" tapered forkForged alloy upper cup with CNC machined alloy lower cupUpper: 36°×45° ACB (blue seal)Lower: 1.5" 36°×45° ACB (black seal)Stack height: 18.8+2.4=21.2mmWeight: 110.2gSparesTop Bearing: TH873E (160-0014000000)Bottom Bearing: TH073E (160-6761)Crown Race: H6078 (160-5537)

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About: FSA

FSA (Full Speed Ahead) is a leading manufacturer of bike components and accessories, including handlebars, stems, cranks, and bottom brackets. Founded in 1994, FSA has been dedicated to producing high-quality products that improve performance and provide an exceptional riding experience. Their components are used by professional cyclists and amateurs alike, and their innovative designs have won numerous awards. FSA is committed to using the latest technology and materials to create products that are durable, lightweight, and stylish. Whether you're a road racer or a mountain biker, FSA has the components you need to take your riding to the next level.

About: Tweeks Cycles

Tweeks Cycles is a renowned retailer in the cycling industry, providing a comprehensive range of products and services for cycling enthusiasts. With a focus on delivering high-quality bikes, components, accessories, and apparel, Tweeks Cycles caters to cyclists of all levels and disciplines. The company is known for its commitment to customer satisfaction, offering expert advice and personalized service to help customers make informed decisions about their cycling gear. Tweeks Cycles also boasts a user-friendly online platform, making it convenient for customers to browse and purchase products. Whether you're a road cyclist, mountain biker, or commuter, Tweeks Cycles has established itself as a reliable and customer-centric destination for all things cycling-related.

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