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  1. #21
    Tora I linked to the article to help explain what the numbers mean on a master cylinder, not start an argument about hydraulic clutch master cylinders.

  2. #22
    Any ideas about clearance issues with radial master cylinders?

  3. #23
    Senior Member Treachery's Avatar
    Join Date
    Nov 2014
    Western NC
    Just now read through the thread. Thanks to the contributors. Have to decide whether to save up for a Brembo or pennytech an R6.

  4. #24
    Quote Originally Posted by Treachery View Post
    Just now read through the thread. Thanks to the contributors. Have to decide whether to save up for a Brembo or pennytech an R6.
    I was planning on saving for a Brembo RCS but landed up snagging a great deal on an OE Brembo unit. Look on eBay for Ducati Master Cylinders, that's what I did. Almost bought a cheapo Chinese set, but then got cold feet... I've used a "Brombo" unit in the past on my ninja 250, but it broke while I was transporting the bike, so I replaced it with a used R6 unit, which refused to bleed... lol So now I have a new rebuild kit waiting to go on.

    This is what I bought - ducati multistrada 1100 brembo fronte brake master cylinder new

  5. #25
    Quote Originally Posted by DCMoney View Post
    Buy the RCS15 if you're inclined to buy an aftermarket MC.


    RCS15 is the best MC for Single Caliper Sets.

    We run them on all our bikes.

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  6. #26
    Senior Member ToraTora's Avatar
    Join Date
    Nov 2014
    San Francisco

    Cool The RSC14

    I recently found out about another nice master. The RCS can be found in a 14. For calipers that have four pistons the the 15 would be the best choice. But if you have a single front caliper with two pistons then the 14 would be a better choice. KurveyGirl has these on sale for $250, that's $100 less that the 15 goes for, and she includes a really nice titanium banjo bolt. We just ordered one for my friends GPR. (yeah we are still working out the brake line.)

    Here's what I posted on the Aprilia Foro.

    I found out that there's a 14 RSC too. The 14 was produced for single discs running a caliper with two pistons. Just like most of the GPR and RS50 bikes. Kurvey Girl has these on sale for $250. You still need to pay shipping, and find a reservoir, but that's a damn fine price for an RCS.

    Quote Originally Posted by Brembo
    The brand new 14 RCS master cylinder from Brembo allows riders to choose between heavy or gradual braking depending on road conditions and weather, personal taste and the overall feeling of the motorcycle. The 14 RCS, with a 14 mm diameter floating piston can be used on most single disc braking systems with 2-pistons fixed or floating calipers. The RCS system (Ratio Click System) is the pioneering adjustment that enables the rider to achieve his ideal riding style. With the new 14 RCS pump it is like to have two master cylinders in one product. The 14x18 mm enables more gradual braking and requires a longer lever stroke while the 14x20 mm generates a more classic road riding feeling.

    However, the configuration can be changed in a matter of seconds by setting the ratio distance between values of 18 or 20 by simply turning the regulator on the front face of the steering arm 180 degrees with a screwdriver. The cam system (red marking when set to 18 mm, black marking when set to 20 mm) adjusts the distance between the pivot point and mounting point on the lever pushrod by 2 millimeters. This redistributes the braking force without altering performance.

    In common with all RCS master cylinders, the 14 RCS also features a microswitch kit for the brake light actuation and a special connection fitting for the hydraulic hose.

    This new master cylinder can be used on the most popular scooter with single 2-piston fixed caliper, or floating, with single disc, ensuring top performance for this category.


    I checked in with Kurvey to see if there was a short lever option. Currently the 14 is only available with the long lever. This is a shame since the MC is aimed at scooters and smaller bikes. You can buy the short lever separate for a little over $50, but at that point there's not much savings.

  7. #27
    A friend has the Nissins that come on the ZX14R I believe. Rode his bike through the canyons the other day and the feel has improved but stopping ability has not whereas his rear custom made NITRON suspension was simply awesome. The bike is so planted and the rear gets a ton more grip now!

    Clearance issue with the screen..he simply reduced the turning radius of the steering

  8. #28
    How can I find out what bore is my OE brembo master cylinder? Thanks in advance guys

  9. #29
    Quote Originally Posted by Muckabucka View Post
    I have the RCS15 on my 390, and it's got great feel and feedback.
    May I ask is your brakes lever on Brembo hit the windscreen when you fully turn to the left?

  10. #30
    Found out, it's 16x18, but the clutch master is still a mystery...



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