FSA Compressor SL Expander Plug
Best lightweight and secure compression for carbon steerer tubes.
A critical upgrade for carbon steerers that replaces harsh star nuts with a gentle, secure expansion system. It provides the necessary preload for headset bearings while ensuring the structural integrity of the fork remains uncompromised.
$33.00
at
The Bike Line
More Headset Compressor options
Who it's for
- Cyclists with carbon forks seeking to protect their steerer tubes
- Home mechanics and riders who frequently adjust their cockpit
- Weight-conscious riders and competitive cyclists optimizing their bike
Who should skip it
- Budget-conscious builders or those seeking basic functionality
- Builders with non-standard steerer tubes or specific brand requirements
- Novice mechanics or those without a reliable torque wrench
Performance breakdown
Carbon Safety
Expansion mechanism applies gentle, uniform pressure to protect fragile steerer tubes.
Installation Ease
Straightforward design makes swapping out star nuts a quick, frustration-free task.
Build Quality
Durable alloy construction ensures long-term reliability under high-torque headset preload.
Weight Efficiency
Lightweight materials keep your front end agile without sacrificing structural integrity.
Aesthetic Integration
Included alloy top cap provides a clean, professional finish to cockpits.
Compatibility
Standard 1.125-inch sizing fits the vast majority of modern road bikes.
Key Specs
Material
Alloy
Part Type
Compression Plug
Component Application Area
Steerer Tube
Diameter
28.6mm
Steerer Tube Diameter
1.125 inches
Quantity Per Pack
1
Tool Compatibility
Hex Key
Bike Type Compatibility
Road, Mountain
System Type
Compression plug
Know before you buy
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