FSA Orbit Option S Headset
Best geometry tuning tool for mountain bikers seeking custom handling.
Unlock precise geometry tuning with this versatile headset system. It allows riders to easily slacken or steepen their head tube angle, providing a simple way to adapt handling characteristics to specific trail conditions without needing a new frame.
$109.98
More Orbit options
FSA Orbit X Headset
$76.00
FSA Orbit CF-40 Headset
$68.06
FSA Orbit DL Threadless Headset
$29.00
Full Speed Ahead IS-2 Integrated Headset
$30.30
Full Speed Ahead Orbit XL-II
$66.00
Full Speed Ahead Orbit Z
$34.97
FSA Orbit IS Carbon Integrated Headset
$90.00
FSA Orbit Z Internal Headset Lower
$34.00
FSA Orbit Option Tapered Angle Adjust Headset
$88.00
FSA SX Internal Threadless Headset
$68.00
Full Speed Ahead Orbit DL Headset
$34.00
Full Speed Ahead Orbit Integrated Headset
$34.99
Orbit MX
$34.00
FSA Orbit Equipe Headset
$53.00
Full Speed Ahead Orbit IS-2
$90.00
Full Speed Ahead Orbit Headset
$66.00
Full Speed Ahead Orbit Bearing
$83.00
Full Speed Ahead Orbit X
$90.00
Full Speed Ahead Orbit Headset
$142.00
Full Speed Ahead Orbit IS Headset
$43.00
Full Speed Ahead Orbit Headset
$53.00
Full Speed Ahead Orbit Headset
$76.00
Full Speed Ahead Orbit MX Headset
$74.50
Full Speed Ahead IS-2 Integrated Headset
$83.00
Full Speed Ahead Orbit DL
$34.00
Orbit XL-II
$76.00
FSA Orbit C-40 Headset
$65.00
Full Speed Ahead Angular Cartridge Bearing
$53.00
Full Speed Ahead Orbit-Z Upper
$40.00
Full Speed Ahead Orbit C-40 Integrated Headset
$61.00
Full Speed Ahead IS-2 Headset
$19.00
Full Speed Ahead Orbit Carbon Series Headset
$22.00
Full Speed Ahead Orbit-C Internal Headset
$29.00
Full Speed Ahead Orbit Headset
$90.00
Full Speed Ahead Orbit MX Headset
$78.00
Full Speed Ahead Orbit C-33 Integrated Headset
$72.00
FSA Orbit MX Headset
$31.90
FSA Orbit Z Headset
$34.97
Full Speed Ahead Orbit DL 1.5R Headset Ball Bearing Retainer
$65.00
Full Speed Ahead Orbit CF-33
$36.97
FSA Orbit Option T1 Headset
$66.99
Full Speed Ahead Orbit IS-2 Headset
$78.00
Full Speed Ahead Orbit MX Headset
$34.00
FSA Orbit CF Headset Bearing
$92.00
Full Speed Ahead Orbit DL Headset
$34.00
Full Speed Ahead Orbit CF-40 Integrated Headset
$106.00
Who it's for
- Aggressive mountain bikers seeking to optimize their bike's handling characteristics
- Enduro riders requiring durable components for demanding trail environments
- Home mechanics looking for a versatile geometry-adjusting solution
Who should skip it
- Inexperienced bike builders without specialized shop tools
- Low-maintenance riders who prefer a simple set-and-forget setup
- Weight-conscious cross-country racers prioritizing the lightest possible build
Performance breakdown
Geometry Tuning Range
Offers significant flexibility to slacken or steepen your bike's handling profile.
Build Durability
CNC-machined 6061 T6 alloy provides a robust, long-lasting structural foundation.
Installation Complexity
Requires precise alignment and mechanical skill to set up correctly.
Compatibility Breadth
Specific to 55mm head tubes, limiting use to select modern frames.
Steering Precision
Maintains tight tolerances for responsive, predictable handling on technical trails.
Weight Penalty
Adjustable components add slight mass compared to standard, fixed-angle headsets.
Key Specs
Headset Type
ZeroStack
Steerer Tube Diameter
1.125 inches
Head Tube Inner Diameter
49.57 mm
Material
6061 T6 alloy
Stack Height
13.9 mm
Angle Adjustment
+/- 0.5, 1.0, 1.5 degrees
Frame Standard
55mm OD head tube
Know before you buy
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