[vinny1]

I am fully unsatisfied with stopping power of my cbr250r std, front brakes are good but rear fully waste of money so i want to fit 240mm disc , stock is 220mm ,, can i replace 220mm disc plate with 240mm in stock brake assembly pls give me useful suggestions.

 

[Jmia18]

90% of your stopping power is the front brakes. If you upgrade anything I would suggest the front not the rear.

 

[Aufitt]

As long as your rear brake is in good condition, ie pads ok, disc clean, fluid level fine, no air in the system, and the fluid less than 12 months old, its as strong as you'll ever need.

 

[jimjim]

90% of your stopping power is the front brakes. If you upgrade anything I would suggest the front not the rear.

+1 You don't want the rear brake to be that good or you'd be locking up the rear too easily. I think the stock brakes are very good for a 2-fiddy.

 

[vinny1]

u r right but in any condition if i want to put 240mm disc plate at rear then is it possible or not ?

 

[Aufitt]

u r right but in any condition if i want to put 240mm disc plate at rear then is it possible or not ?

Why?

 

[vinny1]

@Aufitt - boss my major problem is that my brakes working when i push pedal to much i want they come with feather touch to brake pedal my brake pads are in good condition as well.

 

[pete_falcone]

OMFG...

Read this.

Brakes
Their Real Job Is NOT To Stop - it is to SLOW the bike

The rear brake is fine; actually one of the most well balanced that I've used.

 

[Aufitt]

@Aufitt - boss my major problem is that my brakes working when i push pedal to much i want they come with feather touch to brake pedal my brake pads are in good condition as well.

OK maybe you are stunting or something, but have you done this to suit you?-


http://www.cbr250.net/forum/cbr250-service-maintenance/5808-brake-pedal-height-adjustment.html

 

[pete_falcone]

OK maybe you are stunting or something

I sincerely hope so, but even if, the stock rear brakes are grabby enough to do slides and kickouts if you really wanted to. If anything, I would use a performance pad compound instead.

 

[vinny1]

thanks to all of u.

 

[Wynne G Oldman]

How many miles has your bike done Vinny?

 

[MotoMike]

... can i replace 220mm disc plate with 240mm in stock brake assembly pls give me useful suggestions.

I won't waste a lot of time reiterating all the sound advise and suggestions others have given you in this thread. These guys all know what they are talking about.

To answer your question: Sure it's maybe possible to find a larger rotor to swap out, as long as it has the same bolt pattern. You would also have to come up with a different carrier bracket to reposition the caliper, which would be the bigger nut to crack. Where do you think you might find those parts? It's very unlikely you would find a carrier bracket anywhere that will just bolt up. If you have access to a CNC machine shop, then you might be in business. With enough time and money, almost anything is possible.

If you're interested in the easy solution to your perceived problem, as others have already said... Get some performance brake pads, and start using your front brake more.

 

[Wynne G Oldman]

When I got my bike, it took at least 300 miles for the brakes to bed in, they weren't very good at first, but now they're fine. The back I find is very good, with plenty of feel. The harder you brake on the front, the less traction there is on your rear wheel, so it's not good to have a rear that locks up too easy. You can lock it if you brake hard enough. That's all you need. Your front brake is the most important by far, it's going to stop you much, much faster than the rear.