Rail (750Wh) 220 mm rotor adaptors 2022 Trek Rail 9.8 XT. xl frame

Bam104

Member
Jul 2, 2022
9
2
Livermore ca
Hey everyone
I am looking for some more braking power for my XT brakes. I want to go with Magura MDR-P 220 mm rotors. Could someone help me with what adaptors I need. Going from 203 to 220.
Front - ??
Rear - ??
Trying this first before switching to MT7 pro set up

I am a bigger rider this is way I want some more braking power
6’3” tall. 250 pounds

Thanks in advance
 

Doug Stampfer

Well-known member
Jul 7, 2018
736
752
NZ
I bought a 180-220 for my rail 7 2020 though the original discs were 203mm.
I can't remember why but there must have been some maths involved.

I have noticed a lot more ting ting noises since swapping to bigger rotors
 

Ade.Richards

Member
Apr 10, 2023
7
17
Cornwall
Fitted 220mm front and rear on mine. Used a magura qm45 adapter mount on the rear of mine. 15quid of eBay.Made one hell of a difference. Using hope disc. I already had a 220mm disc up front so unsure what mount it was to gain the right positining.
 

coregrind

Well-known member
Dec 16, 2020
95
80
BEAVERTON, OREGON USA
Magura caliper adaptor part numbers for 220mm rotor install on Rail frame with Zeb fork:
• QM 45 rear
• QM 40 front

Trek states 203mm is MAX for the Rail frame.
 

Whitby Chris

Active member
Subscriber
Jul 13, 2021
145
84
Whitby
Magura caliper adaptor part numbers for 220mm rotor install on Rail frame with Zeb fork:
• QM 45 rear
• QM 40 front

Trek states 203mm is MAX for the Rail frame.
I have 220 on the front of mine as standard and 200 on the back, I have spoken with the shop I purchased the bike from and they have stated there is no problem going 220 on the rear as I am currently changing to MT7's and MDR-P rotors220 front and back,
 

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