Full Speed Ahead NO.55R/57-A Headset
Best durable upgrade for road cyclists seeking smooth steering precision.
This is the upgrade that finally quiets your front end and sharpens your steering response. By swapping in high-quality angular contact bearings, you trade a bit of installation effort for a noticeably smoother, more durable ride that handles aggressive trails without flinching.
$117.00
at
Pro Bike Supply
Who it's for
- Commuters and endurance riders facing unpredictable weather conditions
- Performance cyclists seeking a stable and responsive front end
- Value-conscious riders wanting dependable hardware that lasts for years
Who should skip it
- Owners of vintage or straight-steerer frames needing a universal solution
- Home mechanics without access to professional-grade workshop tools
- Weight-obsessed racers looking to shave every possible gram
Performance breakdown
Steering Precision
Angular contact bearings deliver a tight, responsive feel on technical trails.
Bearing Longevity
High-quality ACB internals withstand heavy loads and aggressive riding conditions.
Weather Resistance
Anodized finish provides a robust shield against mud, grit, and moisture.
Installation Ease
Zero stack design simplifies setup for most modern mountain bike frames.
Structural Rigidity
Robust construction ensures a seamless, flex-free interface between fork and frame.
Maintenance Simplicity
Straightforward design allows for quick cleaning and servicing without specialized tools.
Key Specs
Headset Type
Semi-Integrated (ZS56)
Steerer Tube Diameter
1.5 inches
Head Tube Inner Diameter
56.0 mm
Crown Race Diameter
40.0 mm
Bearing Type
Angular Contact
Frame Standard
ZS (Zero Stack)
Finish Type
Anodized
Intended Use
Mountain Biking
Sealed Bearings
Yes
Angle Adjustable
No
Know before you buy
Still have a question?
Ask Metto anything about the Full Speed Ahead NO.55R/57-A Headset before you decide.
