S40F IS42/IS52 Tappered Headset
Best tapered headset for cyclists upgrading their bike's steering precision.
Elevate your cycling experience with the First S40F IS42/IS52 Tapered Headset. Engineered for superior steering performance, this headset features a robust alloy construction and smooth-sealed bearings for enduring reliability. Its design is optimized for tapered steerer tubes, ensuring a stable and responsive connection between your fork and frame. Perfect for new bike builds or as a dependable upgrade, the S40F provides a solid foundation for confident handling and an enhanced ride, blending durability with precision for a superior cycling journey.
$37.00
Owner Satisfaction
4.5
/ 5
Category Rank
670
/ 2104
#670 in Components
Price vs Category Average
-64%
Below average
Material
Alloy
/ Alloy
Who it's for
- Aggressive riders seeking precise steering and handling stability
- Commuters wanting low-maintenance components for all-weather riding
- Home mechanics needing parts compatible with modern frame standards
Who should skip it
- Owners of frames with potentially worn or damaged bearing seats
- Weight-conscious racers looking for the lightest possible build
- DIY builders working with frames lacking precise manufacturing tolerances
Performance breakdown
Steering Precision
Tapered interface delivers a stiff, responsive feel through technical corners.
Bearing Smoothness
Sealed cartridge system maintains consistent rotation even in gritty conditions.
Build Durability
Robust alloy construction withstands high-impact riding without premature wear.
Installation Ease
Standardized dimensions ensure a straightforward fit for most modern frames.
Weather Resistance
Effective seals provide reliable protection against moisture and trail debris.
Weight Efficiency
Solid alloy build prioritizes long-term reliability over ultra-lightweight racing specs.
Key Specs
Material
Alloy
Bearings
Sealed
Steerer Compatibility
1-1/8″ to 1.5″ Tapered
Top Nut Size
1-1/8″
Bearing Outer Diameter
41.8/51.8 mm
Crown Cone Size
39.8 mm
Height
8.6 mm
Features
- Durable alloy construction for strength
- Sealed bearings for smooth performance
- Optimized for tapered steerer tubes
- Ensures reliable steering control
- Enhances bike handling precision
- Built for consistent quality
- Easy integration into bike builds
What customers say
The S40F Tappered Headset earns high praise for its exceptional reliability and sustained performance. Users consistently note the steering action is remarkably smooth, thanks to high quality sealed cartridge bearings that effectively resist dirt and moisture. This design leads to impressive longevity, often described as a fit and forget component requiring minimal maintenance. Reviewers appreciate the precision machining, which ensures a tight, creak free interface crucial for confident riding. While the initial cost is higher, the consensus is that the superior durability and consistent performance make this headset an excellent long term value for serious cyclists.
Know before you buy
The S40F is designed for standard tapered steerer tubes, specifically 1-1/8″ at the top and 1.5″ at the crown. As long as your fork matches these dimensions, it will be compatible.
You should verify that your frame is compatible with IS42/IS52 integrated headsets. This refers to the 41.8 mm top and 51.8 mm bottom bearing outer diameters required for the cups to seat correctly.
This headset uses sealed bearings, which are designed to be low-maintenance and resistant to the elements. While they are not typically serviceable, they are durable and easily replaced as a unit if they eventually wear out.
Yes, the S40F includes the crown race, which is sized at 39.8 mm to fit the 1.5″ base of your tapered steerer tube.
This headset has a total stack height of 8.6 mm. You should account for this measurement when determining your total steerer tube length and spacer requirements.
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Ask Hayley anything about this product before you decide.
Ready to buy?
$37