Specialized Headset Bearing 49.5x40.5mm OEM Campy 45x45

Specialized OEM Headset Bearing – 49.5 × 40.5mm (45° × 45°)

This genuine Specialized factory replacement headset bearing features a custom 49.5 × 40.5mm size used across a wide range of Specialized road, gravel, and XC performance bikes. Manufactured to OEM specifications, it delivers precise steering, smooth rotation, and long-term durability when replacing worn or damaged headset bearings.

Designed with a Campagnolo-style 45° × 45° angular contact interface, this bearing ensures proper headset preload, correct stack height, and factory-correct fitment.

Features & Benefits

• Genuine Specialized OEM replacement part
• Custom bearing size specific to Specialized headset systems
• Campy-style 45° × 45° angular contact design
• Smooth, precise steering feel
• Steel construction for durability and long service life
• Maintains correct headset preload and geometry

Bearing Specifications

• Outer Diameter (OD): 49.5mm
• Inner Diameter (ID): 40.5mm
• Thickness: 6.5mm
• Interface: Campagnolo-style 45° × 45°
• Material: Steel
• Quantity: 1 bearing

Recommended Use

• Headset bearing replacement during routine service
• Restoring smooth steering and precise handling
• Maintaining OEM headset stack height and geometry

OEM Compatibility (Selected Models)

This bearing is used on many Specialized integrated headset systems, including but not limited to:

Tarmac

• Tarmac SL8 (Pro, Expert, S-Works, LTD & Framesets) – 2024–2025
• Tarmac SL7 (Comp, Expert, Pro, S-Works & Framesets) – 2022–2025

Aethos

• Aethos (Comp, Expert, Pro, S-Works & Framesets) – 2022–2025

Crux

• Crux (Comp, Expert, Pro, DSW, 10r & S-Works) – 2022–2025

Epic / Epic World Cup / Epic 8

• Epic World Cup (Pro, Expert) – 2023–2025
• Epic 8 (Comp, Expert, EVO, Pro & S-Works) – 2024–2025

Allez

• Allez Sprint (Comp, LTD) – 2023–2025

⚠️ Fitment Note

This bearing uses Specialized-specific dimensions and is not a universal headset bearing.
Always confirm compatibility by measuring the original bearing or verifying your exact bike model before ordering.

Why Buy OEM Specialized Headset Bearings?

Using genuine Specialized bearings ensures:

• Exact factory dimensions and fit
• Smooth, quiet steering performance
• Correct angular contact alignment
• Long-term durability
• Preserved ride quality and resale value

A precision OEM headset bearing built for race-level performance, reliability, and factory-correct integrationacross Specialized’s modern road, gravel, and XC platforms.