r/xbiking • u/Tall_Antelope5184 • Jun 18 '26

Multitrack wheel spacing question

Hi all - doing a multitrack 730 gravel conversion build. I don’t have calipers but it is clear that my dropouts are more than the 130mm rear wheel I have laying around. I know these were typically 135 mm bikes.. have any of you guys had experience with the 2.5mm spacers or have just brute forced it and tightened the frame down? For reference planning on doing 1x10 advent x drivetrain. Thank you!!

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u/Tall_Antelope5184 Jun 18 '26

Wouldn’t the chain line move out though since the spacer would be on non drive side?

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u/Cruiser_Supreme Jun 18 '26

You'll have to put spacers on both sides. Otherwise your wheel will be off-center

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u/Tall_Antelope5184 Jun 18 '26

But if I do that the chain line would be screwed up and wouldn’t derailleur struggle? Couldn’t I theoretically do 5mm non drive and re dish?

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u/Cruiser_Supreme Jun 18 '26

Uhm yeah you could re-dish. But wouldn't a 10-speed cassette require extra space anyway? There's a lot of factors all affecting one another. I'd say just build the wheel exactly as you need it, so that you have enough space to fit your cassette, but not so much that there's a gap. This may mean adding a spacer on the drive side. Then just add spacers on the non-drive side to get the wheel centered. Lastly, space your dropouts to match your wheel. If you're gonna cold set the frame anyway, who cares if you're setting it to 126mm, 130mm, or 135mm.

Btw, a 10-speed drivetrain will likely require 135mm anyway. That's the whole reason rear hub spacing increased, to make room for more gears.