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 Post subject: GP Mk.1 caliper
PostPosted: Tue Oct 17, 2017 12:39 pm 
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FYI.


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 Post subject: Re: GP Mk.1 caliper
PostPosted: Tue Oct 17, 2017 1:12 pm 
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Location: Vermont, USA
I'd say that's more likely due to the quick release feature and lack of an outer dirt seal, not from the body possibly being made from magnesium.
Does anyone on here know for an actual fact that any of the P432A GP Mk.1 caliper bodies either were or weren't made of magnesium?


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 Post subject: Re: GP Mk.1 caliper
PostPosted: Tue Oct 17, 2017 4:34 pm 
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I've always wondered about this Bill, they seem light but not mag light. I think this is why we believe they are mag. This is from the old Slater Bros. catalog. Lou

P432A
“GP Mk.1” (4 x 32mm Pistons/40mm mount centers/Cast magnesium body. ‘QD’ = ‘QUICK-DETACH’ PIP-PIN CALIPER MOUNTING)

20.4425.10* LH ‘QD’ GOLD LINE
20.4425.20* RH ‘QD’ GOLD LINE (SHOWN)
20.4425.30* LH GOLD LINE (40mm mounting lugs as P432D)
20.4425.40* RH GOLD LINE (40mm mounting lugs as P432D)

Yet another Brembo ‘first’, this is the caliper that started the revolution in truly high-performance braking for motorcycles in 1983. Fitted to numerous GP winners and series champions in the 80’s and still seeing service on many club racers. OE on some 80’s Bimotas and Ducatis. Out of production, but repair parts are readily available.


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 Post subject: Re: GP Mk.1 caliper
PostPosted: Tue Oct 17, 2017 5:36 pm 
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Location: Vermont, USA
I know, and I agree they don't feel magnesium light. It's hard to argue with the Slaters, but I don't think they are. Cranky doesn't either. We need to do some sort of a burn test to nail this down, and I got a buck that says they're not.


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 Post subject: Re: GP Mk.1 caliper
PostPosted: Tue Oct 17, 2017 8:56 pm 
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Joined: Sat Feb 25, 2017 11:51 am
Posts: 191
Hi,
Not to take us off the GP Mk.1 track, but my 87 F1 bike has MK.2 on it. When were these first introduced?

Thanx,
Clay


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 Post subject: Re: GP Mk.1 caliper
PostPosted: Tue Oct 17, 2017 9:40 pm 
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Just a guess, I would say 1986. 83-85 for the Mk1's. Those are so nice, I think the early ones were straight gold and the later ones had the 'Brembo' name painted red. Lou


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 Post subject: Re: GP Mk.1 caliper
PostPosted: Tue Oct 17, 2017 9:50 pm 
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ducttf1 wrote:
Just a guess, I would say 1986. 83-85 for the Mk1's. Those are so nice, I think the early ones were straight gold and the later ones had the 'Brembo' name painted red. Lou


Thanx for the info!!


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 Post subject: Re: GP Mk.1 caliper
PostPosted: Fri Nov 03, 2017 10:30 am 
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Joined: Sat Feb 25, 2017 11:51 am
Posts: 191
https://www.ebay.com/itm/DUCATI-SUPERBI ... 0033.m2042

Saw this on ebay.....See if this link works....$1900 for a pair?? is that a real price?

Clay


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 Post subject: Re: GP Mk.1 caliper
PostPosted: Fri Nov 03, 2017 3:49 pm 
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Posts: 428
Wow, that's a lot of $$, and they sold!


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 Post subject: Re: GP Mk.1 caliper
PostPosted: Fri Nov 03, 2017 4:59 pm 
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Location: Vermont, USA
Pricey, kinda, but when was the last time you saw an nos pair of those for sale? I think the titanium listed under material was referring to the non-period pad keeper pins.


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