Speedo mount

Hi Chris

Ideally what you need is a 80mm diameter, 3mm section 'o' ring. Try your local bearing supplier or alternatively you can buy a length of 3mm section neoprene/rubber off eBay and cut to suit, joining the ends with glue. That's what I did anyway - not concourse but a neat, watertight seal. Hope this helps.

Try Ashley Popel at Speedo Repairs as he supplies these Speedo O rings when he rebuilds Chronometric Speedo's. He supplied me with one when he rebuilt the Speedo for my Norton Manxman. He advertizes in Roadholder.