AER Series II

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Long recognized as the world’s lightest headset, the new AER now offers a hybrid steel and aluminum bearing that provides even greater durability and a 40% weight savings over comparable models. Strategic machining and precision contours provide an optimal balance between weight savings and strength. The new AER headset is now an ideal headset choice for road and mountain bike applications- a high quality durable headset with durability and lightweight performance in mind. For an ultralight “Race Day” application, road riders can outfit their AER with a Norglide composite bearing.


The AER-Series hybrid Steel/Aluminum maintains the quality and durability our bearings are known for, while shaving 35% of the weight.



Cups and Covers
7075 T-6 Aluminum, contoured and relieved to minimize weight and maximize strength
Compression Ring
Cup-in compression ring
Crown Race
Aluminum crown race with integrated low-friction seal
Top Bearing
41mm or 41.8mm Cane Creek Aluminum Bearing
Bottom Bearing
47 and 52mm Cane Creek Aluminum Bearing
"Race Day" Top Bearing
Interlok® spacer compatible
PTFE composite bearing (Road Only / Sold Separately)
Stack Heights
  ZeroStack (ZS) — 8mm or 15mm top, 4mm bottom Integrated (IS) — 9mm or 15mm top, 1mm bottom