Cane Creek ZN40-Bearing - 52mm | Zinc Plated
Bearings
Cane Creek ZN40-Bearing - 52mm · Zinc Plated
Cane Creek ZN40-Bearing - 52mm | Zinc Plated
The Cane Creek ZN40 52mm Zinc Plated bearing is the go-to individual replacement for the lower cup on standard threadless headsets. Read the overview
At a glance
- Diameter
- 52mm
- Finish
- Zinc plated
- Type
- Cartridge bearing, single
- Ball Material
- Hardened steel
1 in stock
Free shipping on US orders over $100.
- 30-day returns in new condition. Read the return policy.
- Price matching. Found it for less? See how it works.
Overview
Why Should You Choose the ZN40 52mm Zinc Bearing for Your Build?
The Cane Creek ZN40 52mm Zinc Plated bearing is the go-to individual replacement for the lower cup on standard threadless headsets. Built with a zinc-plated machined steel race and hardened steel balls, this cartridge bearing resists corrosion and maintains consistent steering performance through wet rides, variable weather, and high-mileage seasons. The zinc coating provides meaningful protection over uncoated alternatives, extending service intervals and keeping your headset feeling dialed longer.
At 52mm, this bearing integrates cleanly into the lower cup of a wide range of road and gravel headsets, with confirmed compatibility across Cane Creek 110-, 40-, and 10-Series headsets. When your lower bearing shows wear while the upper is still serviceable, this single replacement lets you address the problem precisely without swapping components that have life left in them. Riders who log serious mileage in the Pacific Northwest or any wet-weather region will appreciate the corrosion protection built into every ZN40 bearing.
All the specs
MPN BAA1132
- Diameter
- 52mm
- Finish
- Zinc plated
- Type
- Cartridge bearing, single
- Ball Material
- Hardened steel
- Race
- Machined steel
Works with
- Cane Creek 110-
- 40-
- and 10-Series headsets
FAQ
Good questions
Get to know Cane Creek

There's more to Cane Creek than this one product. Our Cane Creek page has the full Cane Creek lineup we carry and more about the brand.
Visit the Cane Creek page →Is this a single bearing or a kit?
This is a single 52mm bearing. If you need both upper and lower bearings, consider the ZN40 Bearing Kit which includes both in one purchase.
What position does a 52mm bearing typically fill?
The 52mm size most commonly seats in the lower cup of standard external or semi-integrated headsets. Check your headset documentation or measure your current bearing to confirm fitment.
What does zinc plating actually do for a headset bearing?
Zinc plating forms a sacrificial corrosion barrier over the steel race. It slows rust formation when exposed to moisture, road spray, and humidity, extending the usable life of the bearing compared to bare steel alternatives.
Reviews
What riders say about the Lab
“Paul does a great job. He got my bike I bought from someone there in their town and had it packed and shipped to me in Austin, TX… It got here in perfect condition!”
“Fantastic store. It has everything you may want/need for cycling. Great team. Highly recommend to anyone looking for cycling related things and bike service.”
“I recently got back into biking and wanted to add some things onto my bike. They had most of what I was looking for in shop… I'm really happy to have found them.”
Questions about this one?
Not sure on size, compatibility, or whether this is the right one for you? Ask us. A real person here will answer.
Goes straight to the Lab with the product you were looking at attached. No newsletter signup.

