"upgrading" calipers on 999R - Ducati.ms - The Ultimate Ducati Forum
 
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Old Aug 21st, 2019, 6:35 pm Thread Starter
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"upgrading" calipers on 999R

I've thought about changing out my stock radial calipers a number of times on my 03 999R. I'll be the first to admit I like the looks of a monobloc set like the less expensive Brembo M4s and that is one reason for the upgrade. My stock radials are basically silver in color and the word "Brembo" are raised letters also silver in color, while the M4 Brembo name is recessed and painted red, I like that detail. The second need is the possibility of better braking performance, paying particular attention I like to trail brake so a brake that gives a softer feel on initial compression and then bites harder is what I'm most looking for. I know the master cylinder plays a role and also the pads, so I'm looking for some advice or recommendations to what kind of pads I should consider.

About nine years ago I changed out the brake and clutch masters to Brembo billet 19x18 brake and forged 16x18 clutch. They aren't the high end ones and I also installed Rizoma reservoirs. If the M4s/MCs are compatible, they should be, if not, I have no plans to change them out and will pass on the caliper upgrade if the clutch and brake masters aren't a good fit. Another consideration afterwards (I just changed the brake and clutch fluids) is to update the reservoirs with Rizomas that have the bigger fluid level windows.

A used pair of M4s is a good possibility if the condition and price are right. I'm pretty anal about the bike, so the looks of the M4s plays a big role when considering used.

RECAP:
1. Looking for better initial compression feel when trail braking.
2. Recommendation on pads, if I buy the calipers new, are the supplied pads optimum or is there something better?

Thanks all!

Present:08 1800 Goldwing,03 999R#189,Past:03 FLHRI Road King, 09 1125CR Buell, 07 1100S MTS, 04 999S, 95 916, 01 900SS, 05 600RR, 05 600RR totalled, 66 650 BSA, 68 Honda DOHC

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Old Aug 21st, 2019, 7:21 pm
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Old Aug 21st, 2019, 10:05 pm
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You will never notice a change in calipers.

Experiment with different brake pads.

But thereís nothing wrong with a little bling!
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Old Aug 22nd, 2019, 3:22 am
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I agree hole heartedly with trussdude here but what you are looking for can be achieved with a smaller bore master as well. A radial 18 or 17 bore with a 20mm pivot would be ideal. The problem with pads and street riding is the operating temperature range is huge and your speed and requirements will be different to someone elseís on a given piece of road. Over the years Iíve never really found much better than what stock pads offer. Their good over a lot of temperatures and are good enough for track days and some racers.
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Old Aug 22nd, 2019, 3:16 pm
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I don't know if you mean track use, I guess you do since you're talking about trail braking...

I never had any issues racing on those stock Brembo calipers, stock master cylinder or Brembo 19x18 GP master cylinder.

Pretty much always ran Ferodo XRAC pads racing but I prefer more initial bite. One thing to consider is if you go to M4 calipers, you're going from 4 pad to 2 pad so that will perhaps change the initial bite / feel somewhat.

On street bike with M4 calipers and 19 RCS with occasional track use I run Ferodo SinterGrip but it's just personal preference.

Clean your rotors (rotor hone) when changing pad compound.
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Last edited by corsemoto; Aug 22nd, 2019 at 3:22 pm.
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Old Aug 22nd, 2019, 5:25 pm
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Donít clean the rotors just for the sake of it. Some pads deposit a coating on disc the help the pad work. Some new pads have a layer that cleans the surface as well. Read the instructions on the packet. Corsemoto is correct, 4 pad caliper has more instant bit than the two pad. And yes, the Ferodo sintergrip is a brilliant pad.
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Old Aug 22nd, 2019, 5:44 pm
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Yeah, that's why I said clean rotors when changing pad compound and when doing so I just prefer to start with a fresh surface.
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Old Aug 22nd, 2019, 7:42 pm
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This all depends on what you want, need & like--I race Vintage Bikes in AHRMA I race a 1972 BMW R75/5 with a 1975 BMW R90S front end & brakes, I have dual ft disks & single piston swinging calipers. The way I have it set up I have all the brakes I need & out brake the majority of people in my class-( I race 750 Formula & BEARS) --Your Bike is probably lighter then my race bike. I dont know if you are just running on the street or on the track -But this I know for sure--Your brakes are FAR better then mine will ever be, If it's just a look you are looking for--so be it--If its better braking you need to look at your riding style, Better brake pads may solve your issue if better braking is your concern --sintered metallic pads WILL offer better stopping power but they will eat your rotors alot faster---But here is a test if you can grab a handful of ft brakes and lift the rear tyre off the tarmac-----you have everything you need

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Old Aug 23rd, 2019, 2:05 am
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Quote:
Originally Posted by rennsportmotorrad View Post
This all depends on what you want, need & like--I race Vintage Bikes in AHRMA I race a 1972 BMW R75/5 with a 1975 BMW R90S front end & brakes, I have dual ft disks & single piston swinging calipers. The way I have it set up I have all the brakes I need & out brake the majority of people in my class-( I race 750 Formula & BEARS) --Your Bike is probably lighter then my race bike. I dont know if you are just running on the street or on the track -But this I know for sure--Your brakes are FAR better then mine will ever be, If it's just a look you are looking for--so be it--If its better braking you need to look at your riding style, Better brake pads may solve your issue if better braking is your concern --sintered metallic pads WILL offer better stopping power but they will eat your rotors alot faster---But here is a test if you can grab a handful of ft brakes and lift the rear tyre off the tarmac-----you have everything you need
I think heís explained what feel and power he wants.
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Old Aug 24th, 2019, 12:50 pm Thread Starter
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Quote:
Originally Posted by trussdude View Post
You will never notice a change in calipers.

Experiment with different brake pads.

But there’s nothing wrong with a little bling!
Absolutely! Without coming out an admitting it, the force of the bling factor is strong. I knew pads would be a topic to look into, looks like two pad vs four is a good option for what I want.

Thanks everyone for the excellent remarks, I now understand the situation better!

Present:08 1800 Goldwing,03 999R#189,Past:03 FLHRI Road King, 09 1125CR Buell, 07 1100S MTS, 04 999S, 95 916, 01 900SS, 05 600RR, 05 600RR totalled, 66 650 BSA, 68 Honda DOHC

Ducati-Owners-Group of Sacramento region.

Last edited by John; Aug 24th, 2019 at 12:56 pm.
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