Upgrading 2019 Norco Sight C1 From 180mm Rotors to 203mm- Mtbr.com
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  1. #1
    mtbr member
    Join Date
    May 2020

    Upgrading 2019 Norco Sight C1 From 180mm Rotors to 203mm

    Hey all!

    I have a 2019 norco sight c1 with 180mm rotors front and back.

    Upfront on the fox 36 the brake caliper mounts directly to the fork. In the back there is already an adapter/spacer.

    What adapters / bits do I need to get so that 203mm rotors will fit properly? Thank you!


    Thoughts on tweaking 150mm of travel to 170mm with the fox 36 fork?

  2. #2
    B A N N E D
    Join Date
    Apr 2007
    Without knowing what adapter is on the rear, you should be able to work out what you need from the following.

    20mm adapter / 160 to 180mm & 180 to 200mm = Shimano SM-MA-F180P/P2 adapter

    23mm adapter / 180 to 203mm = Shimano SM-MA-F203P/PM adapter

    43mm adapter / 160 to 203mm = Shimano SM-MA-F203P/P adapter

    40mm adapter / 160 to 200mm = SRAM 40mm POST adapter

    Shimano adapters can be used with other brands like SRAM.

    180 to 203mm installation instructions: https://si.shimano.com/#/en/SI/0146A
    180 to 200mm installation instructions: https://si.shimano.com/#/en/SI/8170A

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