Specialized Headset No.42
Specialized
Specialized

Specialized Headset No.42

4.5

Best reliable replacement for cyclists seeking smooth and durable steering performance.

This replacement headset restores steering precision and smoothness to mountain and electric mountain bikes. It includes all necessary components for a complete overhaul, ensuring a reliable fit and consistent performance on the trail.

$31.99

Out of stock
Steerer Tube Diameter Inches 1.5

Who it's for

  • Specialized owners seeking a guaranteed factory-spec fit
  • All-weather cyclists requiring reliable performance in harsh conditions
  • Performance riders prioritizing sharp and predictable bike control

Who should skip it

  • Custom builders working with non-standard or older frame geometries
  • Budget-conscious mechanics looking for the most affordable replacement parts
  • Home mechanics without access to professional-grade workshop tools

Performance breakdown

Steering Precision

Angular contact bearings deliver crisp, predictable handling on technical terrain.

Excellent

Build Durability

Rugged aluminum construction withstands the rigors of aggressive mountain biking.

Excellent

Installation Ease

Complete kit design simplifies the process for home mechanics.

Excellent

Bearing Smoothness

High-quality seals ensure consistent, friction-free rotation over time.

Excellent

Compatibility Range

Perfect fit for specific Specialized models, but limited to proprietary frames.

Good

Weight Efficiency

Lightweight aluminum build keeps the front end nimble without sacrificing strength.

Excellent

Key Specs

Material

Aluminum

Upper Bearing

TH MR121 1-1/8 45°x45° K9

Lower Bearing

TH MR170 1.5 45°x45 J9

Weight

70.87 grams

Compatibility

1-1/8 inch to 1.5 inch

Bearing Type

Angular Contact

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Specialized Headset No.42

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