The FSA TH-970E MR168 headset bearing embodies Full Speed Ahead's technical excellence in the field of ACB (Angular Contact Bearing) bearings. Designed for headsets with tapered tube 1"1/8 to 1"1/4 (34 mm inner diameter, 46.8 mm outer diameter), this sealed cartridge bearing guarantees smooth, precise and durable rotation in all riding conditions — demanding road, gravel or cross-country MTB.

ACB technology and optimal sealing

FSA's ACB (Angular Contact Bearing) technology is based on high-precision stainless steel balls, held in an optimized cage to reduce friction and increase longevity. The black double-lip seal effectively protects against water, mud and dust penetration, preserving internal lubrication and minimizing maintenance. This sealed cartridge design ensures consistent performance even during rides in the rain or severe off-road conditions.

Geometry and compatibility

• Precise dimensions: Inner diameter 34.0 mm, outer diameter 46.8 mm (IS47 standard), height 7.0 mm
• Contact angles: 45° inner / 45° outer — Campagnolo / Cane Creek 45/45 standard, ensuring optimal distribution of axial and radial loads
• Wide compatibility: Fits Campagnolo IS47 Drop-In headsets, as well as frames accepting a 1"1/4 (47 mm) head tube
• Verified applications: Giant Overdrive (except Overdrive 2) in lower position, Bianchi Sprint, Cannondale SuperSix Evo 2016, Specialized (ref. S130600001), and other modern road/gravel frames

Performance and technical characteristics

• Featherweight: Only 26.8 grams, contributing to reduced unsprung weight and improved steering responsiveness
• Stainless steel construction: Increased resistance to corrosion and wear, for extended service life
• Frictionless rotation: Machining precision and ball quality guarantee ultra-smooth and responsive steering
• Reduced maintenance: Thanks to the sealed cartridge system, the bearing retains its original lubrication and requires no regular adjustment
• Simple installation: Bearing sold individually, compatible with standard headset installation tools

Technical highlights

• Code MR168 / MH-P17 / TH-970E: Official FSA reference 160-0018000000, guaranteeing authenticity and traceability
• High-performance black seal: Maximum sealing efficiency for all-conditions protection
• IS47 standard: Perfect integration in modern frames equipped with this head tube standard
• Road/gravel/XC versatility: Suitable for high-performance road bikes as well as demanding gravel and cross-country MTB mounts

Why choose the FSA TH-970E MR168?

This headset bearing is the ideal choice to replace a worn bearing or upgrade an existing headset to a more reliable and high-performance solution. Whether you are an amateur cyclist seeking reliability or a competitor demanding ultra-precise steering, the FSA TH-970E MR168 ACB offers excellent value for money, Full Speed Ahead's reputation and proven compatibility with many high-end road and gravel frames.