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SRAM Guide 203mm rear

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SRAM Guide 203mm rear

Old 09-11-19, 10:30 AM
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Upstaterider510
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SRAM Guide 203mm rear

I own a 2015 Specialized enduro expert 29 carbon that I bought used. It comes factory with a 180mm rear rotor with SRAM guide brakes. From my current understanding of mountain bike brakes the frame has post mounts that are meant for 160mm. From the factory I guess it comes with the 20mm adapter bracket to fit 180mm with the Guide brakes. I'm trying to go to 203mm rotor in the rear and can't find an adapter bracket for this application that fits the Sram guide brakes. Any help would be greatly appreciated. Thanks.
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Old 09-11-19, 12:08 PM
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qclabrat
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Originally Posted by Upstaterider510 View Post
I own a 2015 Specialized enduro expert 29 carbon that I bought used. It comes factory with a 180mm rear rotor with SRAM guide brakes. From my current understanding of mountain bike brakes the frame has post mounts that are meant for 160mm. From the factory I guess it comes with the 20mm adapter bracket to fit 180mm with the Guide brakes. I'm trying to go to 203mm rotor in the rear and can't find an adapter bracket for this application that fits the Sram guide brakes. Any help would be greatly appreciated. Thanks.
Give Specialized a call, its a good chance that the larger rotors won't fit the frame. Most of my bike's stays wouldn't clear a rotor that size in the rear.
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Old 09-11-19, 01:06 PM
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Upstaterider510
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Thanks. I'll look into it.
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Old 09-11-19, 08:04 PM
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Bandrada
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I was going to say, you don't really need that much rotor on the rear. On the front, maybe, if you are a bigger individual and like to ride fast. Even then, I run 170 fr/rr on my Enduro 29 (same year)

BTW, I have a yoke that I'm not using that would convert that to 27.5 if you are interested. Just be aware that you will need to purchase offset shock hardware to avoid making frame contact upon full compression.
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Old 09-16-19, 10:59 PM
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SRAM only makes adapters for 200mm rotors, if you want a 203mm adapter, get a Shimano adapter.

Shimano 160 to 203mm adapter: http://www.bikeman.com/BR8914.html

SRAM 160 to 200mm adapter: http://www.bikeman.com/BR2041.html

Give Specialized a call, its a good chance that the larger rotors won't fit the frame. Most of my bike's stays wouldn't clear a rotor that size in the rear.
It wouldn't be too hard to tell if it would fit, the radius of a 203mm rotor is only 11.5mm more then the radius of a 180mm rotor.
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