Topic: Nissin Front Master - is this a 5/8th?

[SKTP]

I want to buy this Nissin front master.

https://japan.webike.net/products/21554410.html

I am a little confused about this:

Piston Diameter: Length Type Φ19(3/4-inches)[*Width Type 5/8-inches Correspondence]

and

● φ 19 is Horizontal Type 5 / 8 Inch, φ 17 is compatible with Horizontal Type 14 mm. (* Can not be used for other Size. )

Is this a 5/8th piston? What is "φ" that symbol?

Where else can I buy Nissin products?

[SKTP]

I think I will order this one...sadly not a gold body

http://www.dimecitycycles.com/vintage-caferacer-cafe-racer-bobber-brat-chopper-custom-motorcycle-brake-parts-aluminum-nissin-hydraulic-front-brake-master-cylinder-perch-lever-kit-717-651s.html

[Bankerdanny]

I believe that what it is saying is that the cylindrical piston has a diameter (bore) of 5/8 or 14mm and a length of 3/4 (19mm). The bore is the important number so that should work fine for a single front disk SOHC/4.

I think the symbol is a lowercase Greek phi. In math it sometimes signifies the golden ratio (~1.618:1), but I'm not sure how it fits in to this situation.

[754]

14 mm is 9/16.. 5/8 is 16 mm.

[SKTP]

I need 5/8th for my dual stock front brakes. I love the gold body but do not want to risk the wrong piston. Looks like silver it is.

BOOKMARKING: http://www.bevelheaven.com/stuff-for-sale-master-cylinders.htm

[SKTP]

Well after researching a bunch and learning the difference between radial and axial...I finally order the Dime City one...if I had gone radial, I would have needed a different brake line due to the banjo fitting I have and the position of the bajo-bolt on the radial master. I figure the non-radial Nissin will be a noticeable improvement and probably the "feel" of radial would have been wasted on my super old calipers anyways. I had a friend in Japan look into Webike and he figures they are legit. Their Nissin radial master is price almost too good to be believed...unless shipping gets you or something?...anyway, can't wait to try the new 5/8th!