WTB-Front Brake Nissin Master Cylinder 2010 or later.
- Thread starter Moto7man
- Start date
swazi_matt
Active member
I think it’s the same as newish Japanese mx bikes. Not sure what years though but probably easier to source
liamthom
New member
i know a drz250 has the same caliper as a gas gas, and i think i've seen the same master on our friends wr450 but i dont know what year it is
Jakobi
Super Moderator
This this this
Jakobi
Super Moderator
It seems that piston bore has a significant effect on the feel at the lever, with smaller pistons giving sharper feel and more pressure at the caliper, and larger ones feeling firmer in the hand.
All Nissin masters are Japanese. I highly doubt they make a different one just for GG/Beta. From memory I believe that Honda used to run stronger calipers to Yamaha, but I haven't confirmed that myself. I imagine used Honda parts should be easy to come across though.
A quick google turned this up: https://thumpertalk.com/forums/topic/842294-yz-vs-honda-front-brake/
Jakobi
Super Moderator
Just checked the couple I have here.
2010 Master is stamped 9T, and has the brake line coming out the back of the unit. (maybe 16mm bore)
2013 is stamped 1T and brake line runs the same way as above. (11mm bore)
The 2013 has always felt softer at the lever, but given stronger stopping power.
2010 Master is stamped 9T, and has the brake line coming out the back of the unit. (maybe 16mm bore)
2013 is stamped 1T and brake line runs the same way as above. (11mm bore)
The 2013 has always felt softer at the lever, but given stronger stopping power.
(F5)
Gold Level Site Supporter
Typically 11,12 or 1\2"(12.45)mm. Its all about leverage. Smaller bore means more leverage but more travel. Radial are larger bore but lever acts on it differently. .
There is a sweet spot for caliper to mc ratio.
Try this, there is a sweet spot for lever position. Your hand works best at some point. I've only just realised I had it out too far. But then again I'd rebuilt the mc and it had less travel to it. So what was best compromise before was clumsy later.
There is a sweet spot for caliper to mc ratio.
Try this, there is a sweet spot for lever position. Your hand works best at some point. I've only just realised I had it out too far. But then again I'd rebuilt the mc and it had less travel to it. So what was best compromise before was clumsy later.
I think that the main performance difference between your GG and the CR250 is the rotor diameter, GG is 260mm whereas the Honda is 240mm. I would first try an oversized rotor ,I think then that you'll find it similar. Next try a braided brake line, at that point you'll have the same mc, line, caliper, and rotor on both bikes. If you are still not satisfied then you can swap to the 07-present CRF 250/450R only (not 250/450X or 07 cr125/250) front mc which has an improved feel at the lever compared to the earlier unit. From what I can tell the GG mc is the same as the pre 2007 Honda models so if you were to make all of the suggested changes you could obtain greater performance from the Honda vs the GG.
I already installed a 260mm Wave Rotor and a braided line.Its good now, strong and progressive but it won't lock up the front wheel under a load like my GG.
My bad, I think you are right. I installed a Braking Wave Rotor HO09FID. I checked the rotor this morning it is 240mm not 260mm, so that was my bad.
