Strada single disc alternative master cylinders

[Fastmongrel]

I am thinking of upgrading the front brake of my 1981 3 1/2 Strada. It's a single disc Grimeca setup I want to fit a braided hose and a new master cylinder.

I have read several posts saying that the Suzuki GS125 12.7mm (1/2") m/cylinder is a direct swap. I have spotted new pattern ones for sale on fleabay but before I put in an order are there any other types of m/cylinder I can look for. I vaguely remember Yamaha used a 12.7mm on some of their bikes.

[simonnorthroad]

I know Jim at Bikecare who does a lot of work on Morinis uses Italian modern moped m/cyls, off Gilera Runners (I believe) and the like. The banjo-bolt will be the same, M10 x 1.0mm so no need to buy a Japanese compatible banjo bolt

[Fastmongrel]

I know Jim at Bikecare who does a lot of work on Morinis uses Italian modern moped m/cyls, off Gilera Runners (I believe) and the like. The banjo-bolt will be the same, M10 x 1.0mm so no need to buy a Japanese compatible banjo bolt

Thanks that's a good pointer. It would be nice to keep it all Italian.

[RedVee]

Jim at Bikecare did the master cylinder on my '77 Strada earlier this year. I can't recall which one he used and can't find the paperwork at the moment either. (The joys of a good tidy up) Give him a call, I'm sure he will remember.

[Fastmongrel]

Had a quick Google and all the Gilera Runner m/cylinders for sale look really scabby with the paint peeling off. Looks like they are prone to leaking. The ones without peeling paint are covered in road rash.

A new pattern GS125 jobby is looking like the favourite at the moment unless anyone comes up with an alternative.

[Fastmongrel]

Is Bikecare based at 55 Richmond road Bristol it's the only one I can find.

[norbert]

I guess a 13mm pump is the thing to go for a single disc, for a doubledisc it´s a bit tricky

[AntietamClassicCycle]

I installed a new-old-stock 11 mm Grimeca master cylinder meant for an MZ 250 on my '77 Strada. With the stainless braided lines, it gives great feel and power.

[RedVee]

Is Bikecare based at 55 Richmond road Bristol it's the only one I can find.

Yes, that's the one. Jim does only work part time nowadays although the place is open usual times as they are an MOT station etc. Advert in ATG

[Fastmongrel]

I have bought a Chinese gs125 m/cylinder for the grand total of £13.99 off fleabay. I am not expecting Brembo quality and I doubt I could get service parts but at that price if it doesn't work I am not really out of pocket.

Going to order a braided hose kit, caliper seals and pads as well I expect tarmac wrinkling tyre squealing brake power.

Or not