MK III rear caliper

Thomasa · Sep 9, 2022

I want to upgrade my MKIII rear brake. Is there a caliper that will bolt onto the stock mount and use the stock disc? I have looked at Norvil and RGM and AN and come away confused. Since the factory calipers are the same I would expect that at least some of the front calipers on offer would do the trick but I'm at a loss to find which one.

EstuaryBoy · Sep 9, 2022

Not a direct answer I'm afraid, but I'm sure the rear brake must be at some sort of mechanical disadvantage over and above the simple 'weight transfer' explanation...
I put 13mm master cylinders front and rear, and whilst the transformation on the front was like night and day, the rear was more like night and perhaps one in the morning

cliffa · Sep 10, 2022

Thomasa said:
I want to upgrade my MKIII rear brake. Is there a caliper that will bolt onto the stock mount and use the stock disc? I have looked at Norvil and RGM and AN and come away confused. Since the factory calipers are the same I would expect that at least some of the front calipers on offer would do the trick but I'm at a loss to find which one.

There are only two manufacturers that make a direct fitment front caliper. ( I.e. without an adapter) Harrison Billet and Pretech ( who I beleive are no longer in business) the Harrison caliper is a 6 pot device which I don’t think would be suitable for a rear brake. I think your only option would be to make a new carrier to suit.

EDIT : CNW do a conversion at a price !!

cNw Rear Mk3 Brembo Brake System

Small and extremely light weight Brembo master cylinder Unique CNC machined aluminum cover to house the master cylinder System uses a small (15 cc), remote, reservoir that is tucked out of the way but easily accessed for service The remote reservoir has a bracket that locates it on the inside...

coloradonortonworks.net

marinatlas · Sep 10, 2022

Norvil Motorcycles - Product Photo

www.norvilmotorcycle.co.uk

I have no idea what caliper could fit , may be a grimeca/ AP sort of ; but ask them ............

Thomasa · Sep 11, 2022

Thanks for the suggestions. cNw is far more money than I want to spend. I don't want to stop in THAT much style. The Norvil product looks like it has possibilities if I can find out what fits it.

JimNH · Sep 13, 2022

Do you really need it? I ground the hard chrome off and found it adequate. We know the front brake is the more important and where to spend the money. My personal preference is a rear that's not easy to lock even though I can lock it and have during a panic stop.

Thomasa · Sep 14, 2022

Well, I must admit that I broke off the bleed screw in the factory caliper a while back and while it's still possible to bleed it, at some point I'll have to do something about it. So it's either another Locheed caliper or something better.

gortnipper · Sep 14, 2022

You should start with the resleeving the MC and some EBC pads and see how that goes.

EBC FRONT or REAR Disc Brake Pads Fits NORTON 750 / 850 COMMANDO (1973 to 1975) | eBay

EBC Brakes Organic OE quality replacement motorcycle brake pads are manufactured in the UK using high technology ECO friendly brake pad compounds that deliver fingertip stopping power. These organic brake pads are now ECE R 90 brake safety test approved and fully TÜV tested. Motorrad Magzine...

www.ebay.com

MK III rear caliper

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