Author Topic: Front disc pads and pistons  (Read 1064 times)

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Offline Dion

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Front disc pads and pistons
« on: January 06, 2015, 12:03:06 PM »
Hi guys, need a bit of help here.
I’m trying to order some parts for my CR replica from David Silver.
I need front disc pads and pistons.
It appears as if there are two different sizes. And David Silver is unable to find any info about the 43 mm unit
38 mm and 43 mm piston diameters.
The brake units look exactly the same, except for the piston size.

Can anyone help with a part number or info for the 43 mm piston?

Offline napoleonb

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Re: Front disc pads and pistons
« Reply #1 on: January 06, 2015, 02:44:25 PM »
As far as I know the only calipers looking alike are the CB500 (smallest) and CB750K7 (largest).
The Original racers used CB750K0 brake calipers, but everything from K1 to K6 will do if you want it to be "close".
Bear in mind that your brake pump is up for the job if you choose large displacement brake pistons.

Offline scottly

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Re: Front disc pads and pistons
« Reply #2 on: January 06, 2015, 08:42:34 PM »
Nap is correct that the 43mm pistons (actually 1 11/16") were used on K7 and K8 750s. There are aftermarket pistons available in stainless steel or phenolic.
Don't fix it if it ain't broke!
Helmets save brains. Always wear one and ride like everyone is trying to kill you....

Offline Dion

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Re: Front disc pads and pistons
« Reply #3 on: January 08, 2015, 09:00:22 AM »
Thanks guys , sorted

Offline 01Thomas

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Re: Front disc pads and pistons
« Reply #4 on: January 09, 2015, 01:55:49 PM »
Dion, If you need brake parts mail me and let me know what you need. I have a whole selection.
1971 Honda CB750 Four K1 [Engine: CB750E-1113521 / Frame: CB750-1113838]
1977 Seeley Honda CB750F (F1) [Engine: CB750E-2551214 / Frame No: SH7-655F]

'96 Yamaha YZF750SP & '81 Moto Guzzi SP1000 & '80 Moto Guzzi 850 LeMans II & '82 Bimota KB-3 [Frame No 49] & '66 Ducati 50 SL/1 & '53 Miele K-50 & '38 Miele 98