CRF450 hand brake - Stunt Bike Forum

CRF450 hand brake

Old 05-04-2008, 10:44 PM
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CRF450 hand brake

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.
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Old 05-05-2008, 03:31 AM
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Re: CRF450 hand brake

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
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Old 05-06-2008, 02:55 AM
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Re: CRF450 hand brake

try using braided lines too dude they help a bit
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Old 05-06-2008, 02:35 PM
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Re: CRF450 hand brake

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
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Old 05-07-2008, 06:03 PM
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Re: CRF450 hand brake

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
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Old 05-08-2008, 01:39 AM
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Re: CRF450 hand brake

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