White Industries ENO Freewheel
The ENO freewheel is a threaded single-speed freewheel that is meant to be serviced rather than replaced. That is unusual: most threaded freewheels are sealed throwaway units, and when the pawls finally give up the whole thing goes in the bin. The ENO comes apart, which is why a lot of them are older than the bikes they are on.
Design and construction
The engagement choice is the one worth thinking about. The standard mechanism gives 36 points of engagement, or ten degrees of crank movement before the pawls catch. The high engagement version doubles that to 72 points - five degrees. On a geared road bike you would barely notice; on a fixed-wheel conversion, a track-style street bike or anything ridden on technical ground, that halved dead spot is the difference between the drive picking up where you expect it to and picking up a moment late.
The other thing riders talk about is the noise. A White Industries freewheel has a crisp, distinct click that owners recognize from across a car park, and it comes from the same place the sharp engagement does - a precisely cut mechanism whose pawls seat cleanly rather than approximately. It is not a specification, but it is one of the reasons people buy a second one.
It threads onto a standard freewheel thread, so it suits single-speed conversions, touring builds and the eccentric ENO rear hub it is named after. The lockring is offered in six anodized colors, which on a deliberately simple bike is often the only piece of color on the drive side.
Doug White started the company in 1978 and it still machines everything in Petaluma, California, in its own shop. Nothing here is a bought-in blank with a logo on it - the part goes from bar stock to finished component under one roof, which is why spares for things White Industries sold years ago are usually still available.
Fit and compatibility
Steel, about 177g. Tooth counts from 16 to 22, so you can tune the gear without changing the chainring. Engagement is your choice of 36-point/10-degree standard or 72-point/5-degree high engagement, and the lockring comes in black, blue, gold, pink, purple or silver.
Buying it from ProWheelBuilder
ProWheelBuilder is an independent wheel builder in Georgia. White Industries designs and manufactures this part; we stock it, we fit it to the wheels we build, and we are happy to talk through whether it is the right one before you buy.
Warranty
Manufacturer's warranty. White Industries warrants this product against defects in materials and workmanship. The duration, conditions and claim process are set by White Industries and can change without notice, so ask us and we will confirm the current terms before you buy.
ProWheelBuilder. Tools and accessories sit outside ProWheelBuilder's one-year wheel warranty, which applies to the wheels we lace. Cover for this item is the manufacturer's.
Full terms are on our Policies & Warranty page.
ENO freewheel questions
What does 72-point engagement actually feel like?
Five degrees of crank rotation before the drive picks up, instead of ten. It is most obvious when you are ratcheting the pedals at low speed or starting on a climb.
Can it be serviced?
Yes - that is the point of it. It is designed to come apart for cleaning and fresh lubricant rather than being a sealed, disposable unit.
Is this the right freewheel for an ENO eccentric hub?
It is the one it was designed alongside. If you are building an ENO hub into a wheel here, say so and we will make sure the freewheel, cog and tools all match.
Is ProWheelBuilder the manufacturer of the White Industries ENO Freewheel?
No. White Industries designs and manufactures it in Petaluma, California. ProWheelBuilder is an independent wheel builder in Georgia that stocks the part and fits it to the wheels we build.
Not sure? Text or leave a voicemail on 470-253-0929 or email info@prowheelbuilder.com — you will be talking to the people who build the wheels.
