Hi all, I have a newer diverge (expert) with Roval Terra C wheels. The bike was spec’d with an 11-50 SRAM NX cassette. I want to upgrade the cassette to something lighter, but I know I need to change the freehub body. According to Specialized’s website, the Terra C wheels have a DT 370 hub with the “new star ratchet system,” whatever that means. Which XD driver do I need to purchase to upgrade the cassette on this bike? Thanks for the help.
You need the one called “Ratchet LN.”
Looks like they can be hard to find…
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Mikes bikes is showing one in stock for order FYI.
Also, AFAIK there is no disadvantage to going for an XDR freehub (vs. XD) for an application like this right, since one can use an XD cassette with a spacer.
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Good call, XDR might even be better in case you ever want to use the wheels with a road cassette
Thanks for the info. Would any XDR freehub body work, or is a specific one needed?
It needs to be the DT Swiss Ratchet LN
Here’s the XD from Mike’s. I can’t find any XDRs
Aluminum, XDR Road (Fits Ratchet LN Pre-Converted 12x142mm TA Road Hubs)
Our Item #
99570-267319
Mfg #:
HWYABX00S7711S
EAN:
7613052299044
Other #s:
DT0283
$94.80
Please check with DT to confirm, but I believe this would be the XDR freehub for your wheels
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So I bought the one from Mike’s Bikes and it came today. It’s obviously used, which isn’t really an issue, but the threads on it are kinda thrashed and one of the bearings is gritty/ crunchy. I’ll have to send it back.
Wtf?
Resurrecting this one for a little different question. I’ve been running Conti RaceKing 2.2s on my Lauf Seigla’s ethirteen XCX alloys but would love to use my Terra C wheel set. Specialized says the recommended tire size is 28-47mm. Understanding that tire shape will not be optimal, is there any reason not to put 2.2s on the Terra Cs? IW is 25mm vs 24mm on the ethirteens…
its fine