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Discussion Starter · #1 ·
I'm currently using a 180mm rotor with 20mm adapter and want to upgrade to 220mm.

Anyone knows what adaptor I can use from 160 to 220mm?
I couldn't find any PM to PM 60mm from SRAM :(
 

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Discussion Starter · #3 ·
Is the fork rated to use a 220mm rotor?

Unless you make your own adapter, the only way to do it would be to mount a 20mm adapter onto a 40mm adapter, if you do this check the pad alignment with the rotor, the pads should full contact with the rotor and never overhang it.

Similar discussion: https://forums.mtbr.com/brake-time/225mm-pm-pm-adaptor-1079481.html

Just checked and Fox states "max 203mm rotors" are supported :(

Wondering how high is the risk to brake it...
 

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Discussion Starter · #9 ·
2017 FOX Factory 34 Float, FIT4 3-position damper, E2 tapered steerer, Kashima Coat, Boost110, G2 Geometry, 51mm offset

I weight 240 pounds and ride enduro pretty much in the Alps, looking for some more surface for cooling down the discs in the long downhills we have here...
 

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It seems that there is one adapter from a company called Alligator,
Although in the picture it shows PM 160 -> 180mm:

https://www.ridewill.it/p/en/alliga...37-front-adapter-pm-from-160-to-220mm/599420/

Will call them tomorrow to check.
Alligator don't mention this XQ37 adapter and there doesn't seem to be any photos of this adapter anywhere.

https://www.alligatorcables.com/category-Caliper-Adapter-Caliper-Adapter.html

The only place that mentions that adapter is that Italian shop which also lists it on ebay.

I don't think this adapter exists.
 

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Just checked and Fox states "max 203mm rotors" are supported :(

Wondering how high is the risk to brake it...
2017 FOX Factory 34 Float, FIT4 3-position damper, E2 tapered steerer, Kashima Coat, Boost110, G2 Geometry, 51mm offset

I weight 240 pounds and ride enduro pretty much in the Alps, looking for some more surface for cooling down the discs in the long downhills we have here...
I don't think there would be a problem with a 220mm rotor on that fork, I've got a old Manitou fork with a QR axle, it says it has a maximum rotor size of 210mm.

There's only 8.5mm difference in the radius of a 203mm rotor and a 220mm rotor.
 

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I'm assuming you have tried the most common solutions, such as finned metallic pads, ICE rotors and 203 mm? These work fine for me, and I weigh 270 lb.

I'd not try to guess too much on the braking department, specially if you demand them too much.
 

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Galfer SB003 160 to 223 SB003 adapter

Galfer has a 160-223. I use it on a Rockshox Pike with their Wave disc, no Problems.
I couldn't find the Alligator version anywhere in the US. Here's a link to the Galfer SB003 +63mm adapter that I just ordered from their US site for a whopping $27. As a note I don't have Hope brakes. An adapter is an adapter as long as it clears my Saint caliper.

https://galferusa.com/store/hope-all-v4-bracket-sb003
 
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