Hello, So I’m using my mountain bike for a gravel ride in a couple of months. It’s got the sram eagle 12 speed 10-50 cassette and a 32 tooth chainring. I don’t figure I’m going to need much more than a 1:1-ish ratio and would like to find something like a 10-36 or maybe 10-40 or 42 instead of carry…

Get a bigger chainring for the gravel ride if you can instead. That is a cheaper and better option than a smaller cassette.

One option is switch to a 34 or 36 front chainring.

[image] stevemz: That is a cheaper and better option than a smaller cassette. 100% with you but the frame will only accept a 32, unfortunately!

SRAM Road 12 speed cassettes use the XDR driver, and the SRAM Eagle stuff uses the XD driver. The XDR is 1.85mm longer than XD so you can’t use an XDR cassette on an XD driver; you can go the other way (XD cassette on XDR driver) with use of a spacer.

OK, XDR is wider, XD mountain bike cassettes can go on XDR wheels with a spacer but not vice versa. Thanks :slight_smile: Are you saying 10X50 is my option here?

Not sure about your price range but e*thirteen makes a 9-46 tooth 12 speed cassette that fits on an XD driver. I’ve never used it so I don’t know how well it works though.

The Eagle Chain doesn’t work with the road cassette. The flat top chain probably won’t work with your Eagle ring. I’d do a SRAM 11-42 Cassette on a Shimano driver. It’d be cheaper than a 10-36 anyway.

The flat top road chain does not work with the eagle RD. I’m pretty sure the eagle MTB chain does work with the road stuff though. I’m pretty sure I’ve run it, but not positive. My gravel bike has force AXS with the power meter dub crank. If I have a particularly “pitchy” gravel event, I can pul…

[image] jfranci3: I’d do a SRAM 11-42 Cassette on a Shimano driver. It’d be cheaper than a 10-36 anyway. I don’t think sram makes a 12 speed cassette that fits a shimano driver…do they?

[image] grwoolf: My gravel bike has force AXS with the power meter dub crank. If I have a particularly “pitchy” gravel event, I can pull my Eagle AXS RD and 10-50 cassette off my MTB and pair it with my force AXS shifters. My wheel has the XDR driver. I also swap out the front chain ring for 40.…

"Road" cassette for mountain bike running eagle 12 speed

Equipment

mcneese.chad April 21, 2021, 1:42pm 16

Yes, they offer the 2 cassettes (12-spd, 11-50) for the old Shim/SRAM driver:

PG-1210 Eagle Cassette | CS-PG-1210-A1 | SRAM
PG-1230 Eagle Cassette | CS-PG-1230-A1 | SRAM

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"Road" cassette for mountain bike running eagle 12 speed

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