Full Speed Ahead NO.55R/57-A Headset
Best durable upgrade for road and mountain bike enthusiasts.
This headset is the reliable backbone your mountain bike needs for precise, predictable steering on rough terrain. While it lacks flashy customization, the sealed angular contact bearings prioritize long-term durability and smooth rotation, effectively locking out trail grit so you can focus on the ride ahead.
$117.00
at
Bikeman
Who it's for
- Cyclists seeking a reliable replacement for modern tapered head tubes
- All-weather riders needing long-lasting performance in harsh conditions
- Performance-oriented riders looking to optimize their handlebar height
Who should skip it
- Home mechanics without access to specialized shop-grade bearing presses
- Weight-conscious racers prioritizing every gram of weight savings
- Custom builders requiring precise angle or reach adjustments
Performance breakdown
Steering Precision
Angular contact bearings deliver crisp, predictable handling on technical trails.
Weather Resistance
Sealed design effectively keeps grit and moisture out of the bearings.
Build Durability
Robust aluminum construction withstands heavy impacts and long-term trail abuse.
Installation Ease
Standard press-fit design requires proper tools for a secure, flush fit.
Bearing Longevity
High-quality internals maintain smooth rotation through multiple seasons of riding.
Compatibility Range
Specific ZS56 sizing limits use to compatible tapered mountain frames.
Key Specs
Headset Type
Threadless
Frame Standard
ZS (Zero Stack)
Steerer Tube Diameter
1.125 inches
Head Tube Inner Diameter
56.0 mm
Crown Race Diameter
40.0 mm
Bearing Type
Angular Contact
Material
Aluminum
Finish Type
Anodized
Sealed Bearings
Yes
Intended Use
Mountain Biking
Know before you buy
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Ask Metto anything about the Full Speed Ahead NO.55R/57-A Headset before you decide.
