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Old 14-07-21, 02:42 AM
Geoff Dowdle Geoff Dowdle is offline
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Join Date: Jul 2008
Location: Sydney, Australia
Posts: 406
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412USA,

I have two sets of 406 front discs fitted to my two 400s , one with Alloy Coopercraft 4 piston calipers, the other with Girling #17 cast iron Calipers.
Both work well compared to the standard drum brakes . A great safety feature driving a speed keeping up with today's traffic

Measurements of the 406 front Disc compared to a used/worn Britannia front disc

406 OD 11.25 inch , Britannia 10.875 inch
406 Offset 34mm , Britannia 28mm
406 thickness 13mm , Britannia estimated 13mm
Overall height when laid flat 406 47mm, Britannia 41mm

Brake Disc Rotors are available ex BG Developments/Bromsgrove UK HOME
406 Front BGD3993
406 Rear BGD4197
407 Front BGSD 121-10
409 Front BGSD 136-11B
411 Front BGSD 50-10
411 Rear BGSD 50-11

As you can see all the listed discs must have different dimensions .
I hope this helps .
Geoff
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