Author Topic: New Brembo P4 30/34s @ 90 EUR Ea.  (Read 713 times)

Offline ksoholm

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New Brembo P4 30/34s @ 90 EUR Ea.
« on: October 22, 2019, 05:00 »
One more find during my RGS brake upgrade research - Italy's Carpimoto has a great deal on Brembo P4s - fantastic outfit to do business with:
https://www.carpimoto.it/en-US/Brand_Brembo/4292_20516568-Brembo-P4-30.htm

Kristian
1984 RGS 1000
1995 Moto Guzzi Sport 1100

Offline helicopterjim

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Re: New Brembo P4 30/34s @ 90 EUR Ea.
« Reply #1 on: October 22, 2019, 05:07 »
They have great deals and their shipping to Canada is really quite cheap.
74 SFC
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79 (81) Formula Mirage 1200
Various Ducati's, Guzzi's, Puch's ... a BSA Sloper and maybe even an R90
I don't have a 1977 Honda XL 175 but I do have a Chang Jiang CJ750 with a sidecar.

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Offline mcfly998

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Re: New Brembo P4 30/34s @ 90 EUR Ea.
« Reply #2 on: October 22, 2019, 12:03 »
Great call - Thanks for letting us know. 

Just ordered a pair in titanium colour for delivery to the UK. 

Offline sideshow

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Re: New Brembo P4 30/34s @ 90 EUR Ea.
« Reply #3 on: October 28, 2019, 15:40 »
Can you use these on an 81 Jota as an upgrade? Excuse me if thats a stupid question

Offline Grant

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Re: New Brembo P4 30/34s @ 90 EUR Ea.
« Reply #4 on: October 28, 2019, 16:04 »
Yes, once you fit caliper adaptors.
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Offline sideshow

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Re: New Brembo P4 30/34s @ 90 EUR Ea.
« Reply #5 on: October 28, 2019, 16:19 »
Hi grant, can you point me in the direction of the correct adaptors?
Do I need to change the original Brembo master cylinder for this?

thanks in advance

Todd

Offline Grant

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Re: New Brembo P4 30/34s @ 90 EUR Ea.
« Reply #6 on: October 28, 2019, 16:52 »
You can buy adaptors on Ebay or others are available.
Attached is a photo of the adaptors on my bike.
I went with a 16mm m/c compared to a 15mm as standard.

2019-10-28 10.22.50 by Grant Duguid, on Flickr
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Offline lawrence

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Re: New Brembo P4 30/34s @ 90 EUR Ea.
« Reply #7 on: October 28, 2019, 17:30 »
I would suggest that you try the 4-pot calipers with the original master cylinder before committing to buy one with a larger bore.  I like the feel/action of the original master just fine when combined with the new calipers. 
Idaho, USA

Offline sfcpiet

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Re: New Brembo P4 30/34s @ 90 EUR Ea.
« Reply #8 on: October 28, 2019, 17:32 »
You can buy adaptors on Ebay or others are available.
Attached is a photo of the adaptors on my bike.
I went with a 16mm m/c compared to a 15mm as standard.

The stock M/C may be nominally 15mm, but the piston is actually 15.8mm, just about exactly 5/8", as is commonplace in hydraulics.  Lever geometry can make a big difference.

piet
180s feel quick, 120s are...      If it ain't broke, fix it till it is.

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Offline sideshow

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Re: New Brembo P4 30/34s @ 90 EUR Ea.
« Reply #9 on: October 28, 2019, 18:30 »
Thanks so much for all your help


Offline ksoholm

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Re: New Brembo P4 30/34s @ 90 EUR Ea.
« Reply #10 on: October 31, 2019, 16:34 »
Lads,

The PS16 is *just* right with 2 P4s; a very common set-up on many 1990s Italian bikes, and I have it on my Moto Guzzi Sport 1100. I am happy with it, no chance of lever getting too close to the bar, but I would not use a smaller MC. Many upgrade their twin-P4 setups with Brembo RCS19s for more positive lever feel.

Kristian
1984 RGS 1000
1995 Moto Guzzi Sport 1100

Offline sideshow

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Re: New Brembo P4 30/34s @ 90 EUR Ea.
« Reply #11 on: November 09, 2019, 21:51 »
As I just bought the bike, and was doing project planning, I wanted to know my options, Having now  found the master cylinder welded from a previous accident, the decision was easy , I just ordered a PS16 to replace the original   in the photo, so that with new callipers and discs, things should go pretty well, thanks for all your help,  New P4-30 Calipers are on the way, now I just need to find the mounting brackets. All original parts are heading for catalogued storage.