fitting a new front brake system

[Marine.Biker]

Hi,
Have just bought a new front master cylinder brake system for my 125. It was off eBay and hasn't come with any instructions. I have never played with brakes before so I don't want to mess it up and my local bike shop wants to charge between £60 and £90 to do it. This is the item https://m.ebay.co.uk/itm/350863917896
A universal manual or video would be perfect but any help is greatly appreciated.
____________________
Si vis pacem, para bellum (If you want peace, prepare for war)
My first car was a motorcycle
Your car's engine is bigger then my bike? Let's see who wins.

[P.addy]

What bike do you have?

You are only 5 minutes away so if you need help and I'm free, I'll pop over.

You will need DOT4 brake fluid typically.

You need to connect the hose from your current reservoir to the new one, then bleed the system.

[WD Forte]

£60 to £90?
Ouch!
As Paddy says its quite straightforward to do
and If your unsure then I suggest you take him up on his offer

1 tip
Have some old teeshirts/rags ready
so any spillage when fitting and bleeding dont get where it dont oughta be
____________________
bikers smell of wee

[Kickstart]

Hi

I would be concerned about the bore of that master cylinder on a typical 125s single caliper. What bike is it for?

Nothing on that listing seems to state the master cylinder bore. Too large a bore and you will have very little lever travel, no feel and need a lot of pressure on the lever to get the brakes to work. Too small a bore and you will have loads of lever travel (potentially enough that you land up without being able to operate the brakes).

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[moonzoomer]

with respect, that master cylinder looks like a cheap pile of chinese crap, I notice the cheap and nasty clamps to the fluid line and certainly would not put that thing anywhere near a motorcycle. I would suggest you look for an identical replacement to the original master cylinder, also be aware that by changing the cylinder to non original spec you could invalidate your insurance if you do not declare this mod.

[Hugh Farking Cant]

[Marine.Biker]

The bike is a rieju marathon pro 125 sm
Spanish not Chinese so I don't want here things about Chinese bikes
____________________
Si vis pacem, para bellum (If you want peace, prepare for war)
My first car was a motorcycle
Your car's engine is bigger then my bike? Let's see who wins.

[kramdra]

[janner_10]

I wouldn't put anything Chinese near any of my brakes. It's hunting for the cheapest parachute.
____________________
Yamaha FZS600 (Now gone to heaven) > CBR600F4i (SOLD) > '99 YZF-R1

[stinkwheel]

[Marine.Biker]

Don't worry about it now guys.
I've had the original system from a kawasaki z800 fitted instead
____________________
Si vis pacem, para bellum (If you want peace, prepare for war)
My first car was a motorcycle
Your car's engine is bigger then my bike? Let's see who wins.

[P.addy]

[Marine.Biker]

No clue.
Liked the look of it from a friends z800e to it down the shop and they did it
____________________
Si vis pacem, para bellum (If you want peace, prepare for war)
My first car was a motorcycle
Your car's engine is bigger then my bike? Let's see who wins.