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Orbea Wild H10 2024 chainring replacement
- Thread starter Manaster
- Start date
Right, @Manaster, this is a question that comes up fairly often with Orbea Wild owners, and the answer depends on which motor system your 2024 Wild H10 is running.
The 2024 Orbea Wild H10 uses a Bosch CX motor, and the stock ethirteen chainring on these bikes runs a 55mm chainline. If you fit an ethirteen Espec Direct Mount chainring specced at 52mm chainline, you'll be pulling the chain 3mm inboard, which will affect your chainline and could cause noise, increased wear, or poor shifting at the extremes of your cassette.
Additionally, the search results clear this up nicely. Here's the situation, @Manaster: Your 2024 Orbea Wild H10 runs a Bosch Performance CX Gen4 motor with an ethirteen direct mount chainring.
The stock spec is an ethirteen espec Direct Mount 34T Boost chainring, and Orbea specs this bike with a 55mm chainline (you can see the chainguide is listed as
"ethirteen Plus Bosch CX Gen4 CL 55 32-36t" on their builds).
Now, the good news is that ethirteen actually make this fairly straightforward. Their Helix Core espec direct mount chainring for Bosch is designed with an adjustable 13.5-15.5mm offset via spacer, providing adaptability to both 53 and 55mm chainlines for Bosch CX and SX motor systems.
So if you buy the Bosch version of the Helix Core espec, depending on which side you place the spacer, it generates a 53mm or a 55mm chainline.
You'd just fit it with the spacer positioned for the 55mm chainline to match your stock setup. If you're looking at the Helix Race espec instead (the aluminium one), pay attention to the offset.
The Bosch variant comes in 13mm offset for 53mm chainline on CX Gen4/SX, and 15mm offset for 55mm chainline on CX Gen4/SX. You'd want the 15mm offset version to keep your 55mm chainline correct without needing additional spacers.
So to directly answer your question: a 52mm chainline ring would not be correct for your bike. But you don't need to bodge spacers together either. Just make sure whatever ethirteen replacement you buy is either the adjustable Helix Core (spacer set to 55mm) or the Helix Race with the 15mm offset. Both will bolt straight on and give you the correct chainline.
@Durrti found that Wolf Tooth chainrings are significantly more durable than ethirteen on the Wild, so that's worth considering if longevity is your priority, though you'd need to verify Wolf Tooth offer the correct Bosch direct mount with 55mm chainline for your setup.
@Manaster, in theory yes, a 3mm spacer between the chainring and the motor spline would push the ring outboard and get you closer to 55mm. In practice, it's a bit more fiddly than it sounds.
The Bosch CX Gen4 direct mount interface has a splined shaft with a lockring, and adding a spacer changes how deep the chainring sits on those splines. You'll have fewer threads engaged on the lockring, which is already a fairly thin alloy piece. There's also the matter of the sealing rings between the chainring and motor body: on the Gen4 CX there's a brass O-ring and two thin plastic O-rings in there, and a spacer can interfere with that seal, potentially letting muck into the motor interface.
It can be done, and people have bodged it successfully, but given that ethirteen make chainrings specifically for the 55mm chainline in both the Helix Core (adjustable via included spacer) and Helix Race (15mm offset version), you're better off just buying the correct part. The Helix Race espec in 55mm chainline for Bosch CX Gen4 bolts straight on with no faffing about, and you know the lockring engagement, sealing, and chainline are all correct from the factory.
Short version: can you spacer it? Probably. Should you? Not when the right part exists and costs the same. Save yourself the headache.
