Brembo RCS size on R6 calipers

Discussion in 'Tech' started by Junkie, Dec 6, 2017.

  1. Junkie

    Junkie re-tarded

    I run R6 calipers on 320mm rotors on my SV1000 (street with some track rather than track/race, but I doubt that's too relevant).

    I could use a new master cylinder. The Brembo RCS seems like the obvious way to go.

    Who here runs that setup? Do you run an RCS19 or an RCS17? I know the R6 calipers use smaller pistons than most other calipers, so I'm curious as to whether a smaller master than what I tend to see is a good idea (I believe stock R6 master is 16mm, and the current GSXR radial master I have .75" aka 19.05mm, I found the stock R6 a bit mushy no matter how much bleeding I did, so I swapped back to GSXR).

    Also: I've fallen in love with ASV levers, and run them on everything for several years. Sadly, I'm not seeing any options. What good options are available for shorty levers on RCS masters?
     
  2. SPL170db

    SPL170db Trackday winner

    I ran a brembo 19x18 with R6 calipers and liked it quite a bit, which would obviously translate to using the RCS19.

    ASV makes a lever for the regular 19x18 or 19x20 Brembo if you go with that option.
    https://www.revzilla.com/motorcycle/asv-c5-sport-brake-lever-brembo-radial-1920-1918-master-cylinder

    Realistically, as many have said on here, there isn't much purpose in going with the RCS. Its a pain to get repaired if crash damaged, and I've never seen anyone switch back and forth between the 2 lever ratios once installed. Almost everyone sets it on the ratio they like better and leaves it there. I myself have always preferred 19x18.
     
    busa99 likes this.
  3. Junkie

    Junkie re-tarded

    It's a bike that sees mostly street use, so I want a brake light switch. The options that I've seen for the non-RCS brake light switches are either pressure switches (which I'd rather avoid) or expensive enough that I might as well buy the RCS (which comes with a nice one). My understanding is that the standard 19x18/19x20 are a pain to get repaired if crash damaged as well.

    While I don't know that I'll be changing it often, it would be nice to figure out which option I like best.
     
  4. RM Racing

    RM Racing Tool user

    If it's for the street, get the RCS19.
     
  5. dobr24

    dobr24 Well-Known Member

    Why not just run a r6 master? They are pretty good.
     
    418 likes this.
  6. Sweatypants

    Sweatypants I am so smart! S-M-R-T... I mean S-M-A-R-T!

    i ran an RCS19 on a Speed Triple with R6 calipers in the 19x18 setting. you could trail brake lift the rear wheel and one finger brake. it was bonkers good. RCS19 was my favoritest single mod i've ever done to a bike and now i don't think i'll ever have a bike without one.
     

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