Assuming you're talking about an 1195 X01 X-Dome cassette I have the same issue with the steel cogs being very resilient and the aluminum big cog wearing out much faster.
If I already had an X01 cassette that was in great working shape except for the big alloy cog then I'd buy the 44t OneUp X-Cog and be happy with a 10-44t setup.
Buying a new cassette, I'd save ~$100 up front by buying the e13 and the one piece \(3-cog\) alloy cluster costs ~ the same as one a OneUp X-Cog when it comes to replacement time.
I will say I think the X-Dome cassettes are brilliant and as much as I'm known for being cheap I think they present a really good value for people who have their bike geared \(assuming kinematics work\) low enough or otherwise live in places where you aren't in the alloy big cog all the time. I know of a guy on his FOURTH aluminum big cog \(including the original\) on an XX1 cassette where the 10x steel cogs still shift as new.
I've had less positive results with the non-X-Dome cassettes from SRAM and would certainly purchase the e-13 every time over an HG-1175 cassette.
May 1, 2018, 9:35 p.m. - Andrew Major
Assuming you're talking about an 1195 X01 X-Dome cassette I have the same issue with the steel cogs being very resilient and the aluminum big cog wearing out much faster. If I already had an X01 cassette that was in great working shape except for the big alloy cog then I'd buy the 44t OneUp X-Cog and be happy with a 10-44t setup. Buying a new cassette, I'd save ~$100 up front by buying the e13 and the one piece \(3-cog\) alloy cluster costs ~ the same as one a OneUp X-Cog when it comes to replacement time. I will say I think the X-Dome cassettes are brilliant and as much as I'm known for being cheap I think they present a really good value for people who have their bike geared \(assuming kinematics work\) low enough or otherwise live in places where you aren't in the alloy big cog all the time. I know of a guy on his FOURTH aluminum big cog \(including the original\) on an XX1 cassette where the 10x steel cogs still shift as new. I've had less positive results with the non-X-Dome cassettes from SRAM and would certainly purchase the e-13 every time over an HG-1175 cassette.