Fox Air Shaft Assembly
Best upgrade for mountain bikers customizing their suspension travel and performance.
This essential internal component allows for precise travel adjustments and routine maintenance of high-performance suspension forks. It is the reliable choice for riders looking to fine-tune their setup or restore factory-level responsiveness to their mountain bike's front end.
$66.00
at
Red Rock Bicycle
More Air Shaft Assembly options
Who it's for
- Aggressive trail riders seeking precise 150mm fork geometry
- Riders prioritizing reliable, factory-spec compatibility and durability
- Performance-focused cyclists wanting a smooth, tunable air spring
Who should skip it
- Novice mechanics lacking specialized suspension tools and experience
- Riders who might want to adjust travel length later
- Budget-conscious cyclists avoiding premium official replacement parts
Performance breakdown
Travel Precision
Maintains exact factory-spec travel for consistent, predictable suspension behavior.
Installation Complexity
Requires specific tools and mechanical knowledge for a proper, safe install.
Build Tolerance
Engineered to rigorous standards ensuring a perfect fit within the stanchion.
Damping Consistency
Restores the plush, controlled feel expected from high-end Fox suspension.
Weight Efficiency
Minimal mass addition keeps your front end light and responsive.
Durability
Robust construction withstands the high-pressure demands of aggressive trail riding.
Key Specs
Stanchion Diameter
38mm
Suspension Travel
160mm
Part Number
820-02-570-KIT
Spring Type
Air
Weight
91 grams
Bike Type Compatibility
Mountain Bike
Component Application Area
Fork
Model Year
2021
Part Type
Air Shaft Assembly
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Ask Metto anything about the Fox Air Shaft Assembly before you decide.