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

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    • #370145

      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!

      BONUS

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

    • #371378

      Technically you don’t really need 200+mm rotors on the back. My Evil had 180 front and rear with no adapter on the rear, so I added adapters to both ends for 200m rotors. I have SRAM brakes.

      Seeing you said 203mm I assume you have Shimano brakes and this should work on the fork. https://www.jensonusa.com/Shimano-F203PPM-Disc-Brake-Adaptor

      If you have Avid/SRAM brakes you can only go 200mm and I believe it would be a 20mm post mount for the fork and a 40mm post mount for the rear. Not sure if it is the same for Shimano brakes.

      If you have an adapter on the rear for the 180mm is probably a 20mm and could be moved to the front for the larger front roter.

    • #375117

      Before you spend a lot of money on 200mm rotors try these things first.

      1.  Are your brakes are well bled?  Even a tiny bit of air in brake lines diminishes braking power.  Brakes on new bikes are often poorly bled straight from the factory.

      2.  Are you using metallic pads?  Many bikes come from the factory with organic pads which have about half the stopping power of metallic pads.  Changing to metallic pads makes a huge difference.

      3.  If bleeding and metallic pads don’t solve your poor braking, consider only changing the front rotor.  You will get 90% of the benefit from using a larger rotor on the front brake.  Change the front rotor first and try it for a while.  Only change the rear rotor if you still don’t have enough braking power.  However, you’re not going to get much benefit from changing the rear rotor and you might want to consider getting some more powerful brakes before changing the rear rotor.

      I’ve had a couple of bikes that had poor braking.  Bleeding and metallic pads solved 95% of my braking problem both times.  However, in my opinion, all Trail/Enduro bikes should come with 200mm rotors, metallic pads, and powerful stoppers.  I’ve never owned a bike that I thought had too much stopping power.

    • #375211

      Great points! Thanks guys.

      My brakes are SRAM and I have learnt now that SRAM likes 200mm. I’m actually going to go up to 220mm in the front and 200 in the rear. My current brakes work great but my riding will benefit from additional braking power and it’s a relatively cheap upgrade for a major safety / functionality improvement.

      Cheers!

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