I want to update my Nissin clutch MC. so I bought a set of Brembo 16RCS clutch MC. It came with a cable with a banjo bolt and connector at 2 end. There are too many questions on how to replace the original clutch MC. I have to figure them out one by one.

Anyone had done this before? Can you please help to suggest if I need to get a new clutch line for the upgrade?

My bike is a 2019 ABS version.

I would first install the master cylinder to be sure it clears the dash when you turn the steering full lock. Second, I don't see why you would need to use a new clutch line...unless the threads in the Brembo are a different pitch than the OEM master cylinder.

Did you mean to say the Brembo came with a clutch line having a ring coupling at each end and a banjo bolt? If it has a cable, that would not be for a hydraulic clutch. If the master cylinder came with a new clutch line, you might as well use it if it is the correct length.

* Last updated by: Rook on 10/28/2020 @ 5:56 AM *

I would first install the master cylinder to be sure it clears the dash when you turn the steering full lock. Second, I don't see why you would need to use a new clutch line...unless the threads in the Brembo are a different pitch than the OEM master cylinder.

I had tried to discuss with a Kawasaki dealer. He was not sure if I should replace my clutch line by a new one. There is no clutch line in the package.

Did you mean to say the Brembo came with a clutch line having a ring coupling at each end and a banjo bolt? If it has a cable, that would not be for a hydraulic clutch. If the master cylinder came with a new clutch line, you might as well use it if it is the correct length.

It comes with a cable. I will show you the photo. I am not sure if it's a hydraulic switch. But it looks like it.

If the OEM ring coupling inner diameter fits the banjo bolt for the Brembo master cylinder, I can see no reason you would not be able to use the OEM line.

OH--That thing in your picture is a fluid pressure switch. Those are used to activate a brake light if you remove the rear brake master cylinder brake light switch. This is often done when rearsets are installed on a street bike. The rearsets are not equipped with a bracket to hold the OEM brake light switch so you need to install one of those pressure sensor switches to retain function of the rear brake light.

The OEM clutch master cylinder has a switch. It is a small plastic button that gets pressed in when you pull the clutch lever. When the transmission is in gear, this switch enables you to start the engine ONLY if the clutch lever is pulled. Otherwise, the bike would jump forward on the starter motor and if it started, it would take off into a wall or something. The clutch switch is for safety.

So you must not be able to use the OEM clutch switch with the Brembo master cylinder. The Brembo master cylinder must require this pressure sensor switch to detect fluid pressure when the clutch lever is pulled. The OEM clutch switch is mechanical and this one operates on fluid pressure. The only problem is that I do not think the OEM wiring has a connector you could hook up to the switch for the Brembo. If there is no connector, I imagine you would have to cut the wire to remove the OEM master cylinder. You probably could insert an electrical contacts from the OEM wiring for the clutch switch into the Brembo pressure sensor switch.

A) I would rather not cut OEM wiring unless absolutely necessary.

B) You can use a regular banjo bolt instead of this pressure sensor switch. You will need to remember to never start the bike in gear unless the clutch lever is pulled.

C) How do you disconnect the OEM clutch master cylinder wire so that the master cylinder can be sepparated from the bike? Is it possible to do that without cutting the wires? I don't recall ever seeing a connector for this wire. If there is a connector, chances are good you can just hook the female connector from the wiring harness onto the male connector of the switch that is included with the Brembo.

Does the clutch switch have a wire connector? Have a look.

* Last updated by: Rook on 10/29/2020 @ 7:26 PM *

Yo bro~

Thank you!

The seller told me, just need to modify the connector to connect my original clutch connector. It should work. But He didn't know how to tell Positive and Negative.

Hi Rook, do you know how to check if I connect the correct wire?

If you have a service manual, you can check the wiring diagram. It should tell what color is negative and which is positive. The wiring diagram is very complex but if you study it closely, you should be able to get a very good idea of which wire is + and which is -.

I would use a test light to verify positive. Turn the ignition key on. Hook the lead of the test light to a ground source like the ground screw of the battery which should be located on the RH side of the bike outside the battery box. Touch the probe to each wire. The wire that lights the test light is positive.

I'm sure you could hook the test light to any ground on the frame if the battery is too far away to reach the clutch switch. If neither of the wires touched by the probe lights the test light, that would be because the ground is not making good contact. The battery ground should always be a good source of ground but just about any screw on the frame could be a source of ground. The paint on the frame might insulate some screws from grounding. There's no harm if the ground you select does not make either wire you test light the test light. Just choose a different ground if that happens. As said, if the bike's charging system is working properly, the battery ground screw will definitely be a good source of ground.

Will you need to cut the OEM wires from the clutch switch and splice them to the pressure switch to use the Brembo?

* Last updated by: Rook on 10/31/2020 @ 4:04 AM *

Two wire switch says 50/50 is the either/or:
1. Either works no matter the wire swap.
2. Or blows fuse this one time knowing to...
3. ... Swap wires around.

Buy the male or female ends needed for the OEM side of the harness and sacrifice the aftermarket wires.

Hi Rook, you are right. I need to cut the wires to connect the clutch wire. I am checking with my friend who is an electronic engineer for confirmation.

Hi Hub, thanks for your suggestions. I will go ahead when I get those ends. I have already ordered some of them. :)

Hi Rook, you are right. I need to cut the wires to connect the clutch wire. I am checking with my friend who is an electronic engineer for confirmation.

You will probably find the proper connector to match the one on the Brembo here.

http://www.cycleterminal.com/motorcycle-connectors.html

Or like Hub said, buy matching male and female connectors and replace the one on the pressure switch. Buy an extra one for the OEM clutch switch wires incase you ever want to hook it back up.

http://www.youtube.com/v/_NoW01Qhtnc&NR=1

https://youtu.be/ERXVu8NRJ-0