Precisely machined from nickel chrome steel. Chrome plated for extra durability.
The outside diameter of the threaded portion is 26.0 mm.
We suggest using a Park Torque Wrench, for the most accurate installation. Campagnolo recommends tightening the lockring to 50 Newton Meters (N.m) or 36.9 foot pounds.
Note how these lockrings are stamped with the words "9 Speed" which can be confusing. A lockring is matched to a specific cassette body and a first position cog only. The number of cogs is not important. Therefore you may use this lockring with an 8, 9 or 10 speed cassette as long as the body and first position cog are correct.
26.0 mm lockrings used to come in two flange sizes: One with a 38.5 mm flange for cassettes that start with a 12 tooth or larger cog. Another with a 35.2 mm flange that is for cassettes with an 11 tooth first position cog. These lockrings are NOT interchangeable! You must match the flange size to your first position cassette cog. The 11 tooth first position 26.0 lock ring was discontinued. You may grind or mill down the flange on a 12 tooth one to 35.2 mm and it will work fine.
The 38.5 mm flange diameter lockring is available only in chromed steel.
These lockrings are designed to fit the original Campagnolo 9 speed hubs that first appeared in 1997. They also fit 1996 Campagnolo 8 speed titanium hubs.
I would just like to say that Campy lockring compatibility issues sure can be confusing. Even the Sheldon Brown site that generally explains everything, mostly skips over this issue. I have several types of Campy 8-spd cassettes where the last cog is 11T, 12T, and 13T. I tried the lockring made for the 12 and 13T cassette on the hub when the 11T cog is mounted and I can see that it is too large in diameter, where it would interfere with the chain fully landing in the bottom of the sprocket troughs. I can also see how it could easily be ground down on a grinding wheel to give more clearance without ruining the lockring, although it would be nice to have the right one. I actually have some extra Campy lockrings but they are all too small to fit on a Campy Chorus 8-speed hub body. I received them with 8-speed cassettes, and was told they were also 8-speed. I would really like to read more about what size 8-speed hubs are available out there in both Campy Record and Chorus. Apparently, Campy lockrings come in 3 sizes (26, 27 and 29mm). I don't know which sizes I have. Someone should really put up a website that shows all of the various 8-speed hubs and lockrings and try to clarify all of this. I understand the Campy 8-speed titanium hubs were also a different size. With replacement lockrings costing about $40-$50, one needs to figure this stuff out before ordering.
Bottom LineYes, I would recommend this to a friend