180mm rotors & XTR discs, think this would work???- Mtbr.com
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  1. #1
    Kam
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    180mm rotors & XTR discs, think this would work???

    So, Anders in the Weight forum ran a FRONT IS mount XTR caliper on the REAR of his Blur and this enabled him to use a 140mm in the rear. So;

    Front XTR caliper + rear IS mount = 140mm rotor. Cool way to save weight.

    Would this mean that if one used a REAR IS mount XTR caliper up front, they'd get the clearance to run a 180mm front rotor???

    I ask this because I'm thining of building a Karate Monkey 29er and would like to run a 180mm front/160mm rear rotor set up with my XT/XTR hydro combo.

    Cheers and thanks in advance for any help or insight on this.

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    Correct, rear IS mount caliper on the front = 180mm or +20mm depending on size.
    Hope discs will fit, 180mm not 185mm older style.

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    Kam
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    Great, thanks...

    Quote Originally Posted by Paul5s
    Correct, rear IS mount caliper on the front = 180mm or +20mm depending on size.
    Hope discs will fit, 180mm not 185mm older style.
    Cool, thank for verifying that thought. I'll try 160mm front and rear. If I feel that more power is really necessary, switching out the front caliper and buying 180mm rotor.

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