The Enduro 6808 Angular Contact Bearing is a high-performance steering component designed specifically for the 1.5" lower headset position of modern tapered forks. While the 6808 size is a common industry standard, this specific model features a hybrid 36° internal and 45° external chamfer. This precise geometry is critical for certain high-end framesets that utilize a 36-degree crown race interface, ensuring the bearing seats with absolute precision to eliminate "creaking" and front-end play.
Constructed with 52100 High-Carbon Chromium Steel races and Grade 10 high-precision balls, this bearing is engineered to withstand the massive leverage and impact forces exerted on the lower head tube. Whether you are navigating technical rock gardens on a mountain bike or high-speed descents on a road machine, the 6808 ACB provides a stable, "indexed-free" steering feel that restores your bike to its factory-fresh performance.
36° x 45° Hybrid Geometry: Specifically engineered with a 36-degree internal angle to mate perfectly with specialized crown races, and a 45-degree external angle to fit standard head tube seats.
52100 High-Carbon Steel: Vacuum-degassed chromium steel construction provides a harder, smoother surface that resists pitting and wear significantly better than budget steel bearings.
Grade 10 Precision Balls: Features balls that are spherical within 10/1,000,000", ensuring perfectly even load distribution and reducing internal friction for a light steering feel.
Dual-Lip Labyrinth Seals: Equipped with high-contact seals that create a robust barrier against road spray, dust, and moisture while locking in the essential factory lubricant.
High-Fill Marine Grease: Factory-packed with a specialized waterproof grease designed to stay in place under high-vibration conditions and resist wash-out during cleaning.
ABEC 3 Precision: Manufactured to ABEC 3 tolerances, ensuring a higher level of roundness and smoothness than standard industrial bearings.
| Feature | Specification |
| Dimensions | 40mm (ID) x 52mm (OD) x 6.5mm (W) |
| Contact Angle | 36° Internal / 45° External |
| Material | 52100 High-Carbon Chromium Steel |
| Bearing Type | Angular Contact (ACB) |
| Seal Type | Dual-Lip High-Contact |
| Compatibility | 1.5" Tapered Lower Headsets |
Owners of Specialized Tapered Forks: If your crown race is cut at a 36-degree angle, this specific hybrid bearing is a mechanical necessity for a play-free fit.
Restoring Steering Precision: Ideal for riders looking to eliminate the "notchy" or loose feel in their steering caused by worn-out or lower-quality original equipment.
Aggressive Riders: Built to handle the high-torque loads of modern long-travel forks and aggressive gravel riding geometries.
Standard 45° x 45° Headsets: This is a 36° internal bearing. If your crown race is a standard 45-degree model, this bearing will not seat correctly and will cause immediate headset play.
Extreme Corrosive Environments: While highly durable, this is a steel bearing. For riders who train heavily indoors or live in coastal areas, the Enduro Stainless Steel version of this size is the preferred choice.
The 36° internal angle is the "secret sauce" of this bearing—always check the laser-etched markings on your old bearing or measure your crown race before installation. When fitting the bearing, apply a generous layer of waterproof assembly grease to the chamfered edges and the internal head tube seat. This creates a "hydrostatic seal" that prevents water from pooling in the lower cup and stops the metal-on-metal creaking that often plagues carbon frames. Adjust your top cap just until the play disappears; a properly set ACB bearing should feel weightless!
