Threadless headset Enduro Bearings 1-1/8" Stainless Steel

HDK-0008 – a threadless stainless steel headset bearing kit for framesets with a 34mm (1-1/8) head tube inner diameter. For a 28.6 mm steerer; listed dimensions: 28.6/34/30 mm. The kit includes a fork crown race, upper split ring and cap. Stainless steel cups and bearings.

This kit eliminates the external headset bearing cup: the bearing presses directly into the head tube for a low-profile setup.

Enduro uses only 440C stainless steel balls and races for long service life and corrosion resistance in demanding conditions. 440C has the highest strength, hardness and wear resistance of all standard 440-series stainless steel alloys with high carbon content. It is also the most expensive alloy in the 440 series, and achieving its superior mechanical properties requires multiple rounds of heat treatment and cryogenic treatment. Although stainless steel has 20% less load capacity and is slightly softer than the standard 52100 chromium steel used in most Enduro bearings, it is an excellent alternative in wet conditions, if you wash your bike often, or where sweat can be a problem. These bearings also use LLB-type seals and CRC Marine Grease for additional protection against water and the elements.

The Enduro headset bearing range starts with chromium steel bearings with a Black Oxide finish and A/C design, and extends to 440C stainless steel at the top of the range. The bearings are engineered with the largest balls possible and dual-lip seals running in a micro-groove for protection against sweat and the elements. They are filled 90% with high-pressure waterproof grease. In Enduro Angular Contact (A/C) bearings, the balls engage to spread force over a larger surface area, reducing pressure, water intrusion and wear.