double Z

I have been working on getting a dual caliper set-up for my '03 450 but w/o much luck. I purchased an OEM rear caliper & bracket, cut & welded it to my stock bracket, installed a radial front brake lever off a gixxer, installed a new brake line to the 2nd rear caliper & bleed the hell out of it.

It sucks, won't stop me for nothing, doesn't even slow me down. I switch the lines between the calipers to test incase I had a bad one but the stopping power was the same - switched back rebleed & still nothing. My pads are good, switched them between each caliper still poor stopping. Rotor is thick & good, no air in the system, have tried another hand brake lever (before the radial) & same results. I can stop myself w/the foot brake, even lock up the rear tire.

Any suggestions? I do not have $$ to buy a hand brake kit, that is why I am making it myself.

mxsam34

you need a 13mm(1/2in) master, nissan make a good ive been told

sports bike master's are i think 17mm(someone correct me if wrong) so the ratio is wrong, ive tried too, they dont work

PM ryan moore, he can get all the parts you need

el sammo

try using braided lines too dude they help a bit

Goodluckmonkey

I built my own dual caliper setup and tried with to small a master to start with. I have a 14mm on there now off an NC30, but could do with a 1/2 or 13mm. A lot of sportsbikes have 1/2" clutch masters, which would be a good way to go.

For details and pics of my setup >>>> https://www.stuntlife.com/forums/pos...61-post36.html

Ryan Moore

Weld up a front caliper on the rear, instead of that rear caliper, and you will be good to go. The piston is way to small in the crf rear caliper. 1/2 nissan hand brake helps, but it still won't lock up 1 finger till you get a bigger caliper on the back, I run a Braking Supermoto rear caliper and one finger all day long now!! Took me 2 years and hundreds of dollars, and 4 masters to figure it out

double Z

Alright thanks for the help guys, im going to try a bigger rear caliper.