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AER Series II



Light As AER

Long recognized as the world’s lightest headset, the AER series offers a hybrid steel and aluminum bearing that provides even greater durability and a 35% weight savings over comparable models. Strategic machining and precision contours provide an optimal balance between weight savings and strength. The AER headset is an ideal headset choice for road and mountain bike applications- a high quality durable headset with durability and lightweight performance in mind.

AER series headsets are available at select retailers

Description

Features

Technical Documents

Additional information

Cups and Covers

7075 T-6 Aluminum, contoured and relieved to minimize weight and maximize strength

Crown Race

Aluminum crown race with integrated low-friction seal

Bearings

Lightweight aluminum/ steel hybrid cartridge bearing

ZS44 will take a 41mm bearing
EC44/40 will take a 52mm bearing
EC44/33 will take a 47mm bearing
ZS56 will take a 52mm bearing
IS41 will take a 41mm bearing
IS42 will take a 42mm bearing
IS47/33 will take a 47mm bearing
IS52 will take a 52mm bearing

All complete Cane Creek AER series headset assemblies (top or bottom) will use a 36×45 degree contact angle bearing, with the exception of our IS47/33 and EC44/33 headset assemblies. IS47/33 and EC44/33 will use a 45×45 degree contact angle bearing.

Complete Assembly Weights

IS41 Tall Cover (H15) Top BAA0956K – 40.6 grams
IS41 Short Cover (H9) Top BAA0957K – 39.2 grams
IS42 Tall Cover (H15) Top BAA2958K – 40.8 grams
IS42 Short Cover (H9) Top BAA0959K – 39.4 grams
ZS44 Tall Cover (H15) Top BAA0962K – 52.4 grams
ZS44 Short Cover (H8) Top BAA0961K – 49.8 grams
EC44 Bottom BAA1029K – 39.6 grams
ZS56 Bottom BAA1030K – 39.4 grams
IS52 Bottom BAA1044 – 28 grams

Bearing Weights

41mm Bearing BAA0925A – 12.8 grams
42mm Bearing BAA0926A – 13 grams
47mm Bearing BAA0930A – 17.8 grams
52mm Bearing BAA0927A – 22 grams

Stack Heights

ZeroStack (ZS) — 8mm or 15mm top, 4mm bottom, Integrated (IS) — 9mm or 15mm top, 1mm bottom

Compression Ring

Cup-in compression ring

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4.6
Based on 159 reviews
5 star
83
83%
4 star
7
7%
3 star
4
4%
2 star
2
2%
1 star
4
4%
Showing 11 of 159 reviews (4 star). See all 159 reviews
Rob E.
Rob E.us
Verified OwnerVerified Owner
4/5

Nice product!

Verified reviewVerified review - view original

4 months ago
Joshua A.
Joshua A.us
Verified OwnerVerified Owner
4/5

Amazing piece of tech that gives me a lot of confidence in the bike to know that a plastic piece has been replaced with an attractive and much more functional metal piece.

A note:
It took a long while to find proper instructions on the install for the piece, which would have been nice to have included in the packaging. I would also recommend having an additional option at checkout to buy a small packet of Green Locktite or whatever recommended product you have for installation as that is a necessary piece for install.

Verified reviewVerified review - view original

4 months ago
SG-2500-3334 Sazali Ahmad Ahmad
SG-2500-3334 Sazali Ahmad Ahmadsg
Verified OwnerVerified Owner
4/5

Comfy but not sure how long can last

Verified reviewVerified review - view original

10 months ago