1-1/8" drop-in, internal headset bearing, measuring 30.2 × 42 × 7 mm; 45° angle on the ID only.
The bearing races are made from 52100 high-carbon chromium alloy, and the bearing uses Grade 10 balls. It is filled to 90% with high-pressure, waterproof grease.
The primary application for this bearing size is as a direct replacement on some Pinarello bikes.
Features
- Enduro headset bearings are available in two basic performance levels, both exceeding standard bicycle industry specifications.
- Entry-level bearings use premium materials such as Black-Oxide-treated races and come with a two-year warranty.
- Premium bearings have 440C stainless steel races and come with a full lifetime warranty.
- All Enduro bearings use the largest balls possible and feature dual-lip labyrinth seals to protect against sweat and the elements and contain the 90% fill of high-pressure, waterproof grease.
- The Angular Contact (A/C) design of Enduro headset bearings allows all balls in the bearing to engage the load. This spreads the force over a larger surface area, minimizing the possibility of premature wear and extending bearing life.
Static load – 854 lbf / 3.8 kN
Weight – 24.7 g