Description

Upgrade Your Ride with Precision-Built Headset Bearings
Engineered for cyclists who demand reliability without compromise, these cartridge bearings deliver smooth performance across diverse terrains—from urban commutes to rugged trails. The 40-Series Black Oxide Bearings combine military-grade corrosion resistance with precision engineering to extend component lifespan by up to 30% compared to standard steel variants.*

Key Features:
Tri-Series Compatibility: Seamlessly fits 10-, 40-, and 110-Series headsets (common in Threadless MTB/road bikes)
Optimized Geometry: 36° contact angle + 45° chamfer design reduces friction during aggressive steering maneuvers
Industrial-Grade Construction: Black oxide-coated chrome steel races withstand moisture exposure better than untreated alternatives
Rigorous QC: Each bearing undergoes 10-point inspection for radial play <0.005″ tolerance

Ideal For:
▸ Performance-oriented mountain bikers
▸ Road cyclists maintaining peak steering responsiveness
▸ Bike shops stocking universal headset solutions

Why Choose This Series?
| Specification | 40-Series | Competitor A | Competitor B |
|————————-|———–|————–|————–|
| Weight (g) | 87 | 102 | 95 |
| Max Load Capacity (lbs) | 1,200 | 900 | 1,050 |
| Sealing Standard | IP65 | IP54 | IP55 |
| Warranty Period | 2 Years | 1 Year | 18 Months |

Laboratory tests show average wear reduction vs untreated bearings in salt spray environments.

Designed for hassle-free installation using standard headset tools (no specialized equipment required), these bearings feature self-aligning races that compensate for frame flex during high-speed descents. Upgrade your bike’s rotational efficiency today—perfect for rebuild kits or replacing worn components in Shimano/SRAM-compatible systems.*

Specifications validated against ASTM B311 standards.

Related Products