P21 Bicycle Headset Bearing (37 × 49 × 7 mm | 45° × 45°)
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Maintain smooth, precise steering with the P21 Stainless Steel Bicycle Headset Bearing. Precision-engineered from premium stainless steel, this sealed cartridge bearing is designed to provide long-lasting durability, low-friction performance, and excellent resistance to corrosion, making it ideal for all-weather riding.
The sealed design helps keep out water, dirt, and debris, ensuring reliable performance and extending the life of your headset. Whether you're replacing a worn bearing or upgrading your bike, the P21 offers a precise fit and dependable operation for compatible headset systems.
Suitable for road bikes, mountain bikes, gravel bikes, hybrid bikes, and e-bikes.
Features
- Premium stainless steel construction
- Precision-machined for a smooth, accurate fit
- Sealed cartridge design protects against water, dust, and dirt
- Corrosion and rust resistant
- Low-friction operation for smooth, responsive steering
- Durable and long-lasting performance
- Direct replacement for compatible P21 headset systems
Specifications![]()
- Model: P21
- Material: Stainless Steel
- Type: Sealed Cartridge Headset Bearing
- Outer Diameter (OD): 49 mm
- Inner Diameter (ID): 37 mm
- Height (Thickness): 7 mm
- Contact Angle: 45° × 45°
Package Includes
- 1 × P21 Stainless Steel Bicycle Headset Bearing