IRC M5B??????

Katoom

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Just wondering if anyone has ever tried to run one of these on a 19" wheel and how it worked out? It's what I run on my KTM 300 and I love the tire but with the tall lugs I worry that there's not enough clearance from the mud flap/swing arm?
Also, I'm considering swapping to a 18" rear on my MX bike and I'm wondering how that works out?
 
Just wondering if anyone has ever tried to run one of these on a 19" wheel and how it worked out? It's what I run on my KTM 300 and I love the tire but with the tall lugs I worry that there's not enough clearance from the mud flap/swing arm?
Also, I'm considering swapping to a 18" rear on my MX bike and I'm wondering how that works out?
I have 2 mx1.0 bikes with 18” rear wheels.
I bought the second one used, and it came with an 18” M5B with a mousse and it works fine.
But I prefer tubliss with a VE-33S.
I can’t help with any info or experience on a 19”.
 
So I just mounted the M5B on my '25 MX 1.2 and this is the gap I'm seeing, it's pretty tight and concerns me a bit..
PXL_20260313_134742604.jpg


PXL_20260313_134806700.jpg

And he's is the same M5B mounted on my '23 KTM 300 XC, see how much more gap I have...
PXL_20260313_134758513.jpg
 
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