What Should I Do ?

[Mythos]

I have never weighed the busa's stock front calipers but I would bet they are similar in weight to the 14's.

The 14's calipers are 1108 g each. According to a supplier, the Berringer for the ZX-14 is 990 g. That's a total weight loss of 14 oz which is good but it costs $3000 for a set of the two piston. That's $214/ounce of weight loss which is about the average for small aluminum parts.

Now the busa's calipers are a few hun less expensive if they are the axial mount style which I think they are. Those look a lot lighter than the radial mounted calipers. I guess it's worth it but I'd check on the weight of ISR because they're even lighter and less expensive.

If you want to go really cheap, buy a set of Frandos. I don't know what they weigh but they are cheap as dirt. ....definitely don't go with only one of those on the street!

As for Brembo, the only ones that were significantly lighter than the sockers for the zx-14 were the very high end Brembos. I don't need the performance of those and I definitely don't need the price.

 

[Mythos]

That's a total weight loss of 14 oz which is good but it costs $3000 for a set of the two piston. That's $214/ounce of weight loss which is about the average for small aluminum parts.

I misspoke. $400/ lb is the ballpark to shoot for on lightweight replacement parts. That's about what you get from billet side stands, fuel tank caps, etc. Wheels and exhaust, the $/lb is better. $200/ounce is not a very good bang for the buck but if you get better performance from aftermarket calipers, the weight loss is a nice side benefit. One thing I hate is buying aftermarket parts only to find they weigh more than stock. Engine covers is one example. Don't buy billet engine covers unless you expect to need the improved durability for a crash. They are a lot heavier than stock.

 

[michael parris heuberger]

Was rereading this and I was thinking. Maybe go to a super caliper like a Brembo M50, GP or something like that and then just use one of them? Seems like that might save a lot more than 6 oz? Personally I am against single calipers on the street. From what I hear they are significantly less powerful, fade quicker, and they can snatch the bike to the side if you go aggressive with a handful of front brake (all hear-say, not personal experience). Maybe someone already said that, just a thought.

The OP must be one of us senior citizens on here if he was flying in The Nam and much respect for his service and for still hitting it hard!

Hi all. Thank you fallarch. Yes 70 years is coming way to quick! LOL

 

[Mythos]

Yes 70 years is coming way to quick!

Then you need to ride closer to light speed so it comes a little slower!

 

[RedBull]

My Very Slow Build | General Bike Related Topics

Some new pictures

www.hayabusa.org

 

[ZeePopo]

I have never weighed the busa's stock front calipers but I would bet they are similar in weight to the 14's.
View attachment 1577590
The 14's calipers are 1108 g each. According to a supplier, the Berringer for the ZX-14 is 990 g. That's a total weight loss of 14 oz which is good but it costs $3000 for a set of the two piston. That's $214/ounce of weight loss which is about the average for small aluminum parts.

Now the busa's calipers are a few hun less expensive if they are the axial mount style which I think they are. Those look a lot lighter than the radial mounted calipers. I guess it's worth it but I'd check on the weight of ISR because they're even lighter and less expensive.

If you want to go really cheap, buy a set of Frandos. I don't know what they weigh but they are cheap as dirt. ....definitely don't go with only one of those on the street!

As for Brembo, the only ones that were significantly lighter than the sockers for the zx-14 were the very high end Brembos. I don't need the performance of those and I definitely don't need the price.

I highly recommend the ISR equipment. Very well made.

 

[Mythos]

I highly recommend the ISR equipment. Very well made.

They look completely awesome! I believe ISR went with a transparent finish to reduce the cost and maybe so they match Ohlins forks. I think with a little paint, a set of ISRs would look sweeter than any other caliper available and I've heard they're good brakes to....maybe not quite as good as really high end Brembos but there's not a lot of people riding busas that need that of level brakes.

 

[ZeePopo]

They look completely awesome! I believe ISR went with a transparent finish to reduce the cost and maybe so they match Ohlins forks. I think with a little paint, a set of ISRs would look sweeter than any other caliper available and I've heard they're good brakes to....maybe not quite as good as really high end Brembos but there's not a lot of people riding busas that need that of level brakes.

I put them right on par with high end Brembos. Solid finish that takes all the weathering damage you can throw at it. They are made to survive and perform. I just use ISR now, no more Brembos for me.

 

[ROADTOAD1340]

I put them right on par with high end Brembos. Solid finish that takes all the weathering damage you can throw at it. They are made to survive and perform. I just use ISR now, no more Brembos for me.

How does the pad life work out for you , r they still the 6 individual pads for the 6 pot caliper for example ? HPS in UK sell ISR , I was talking to them back when I was checking out new calipers for replacing my Busa set of .484 Brembo . HPS recommended Brembo because they said ISR pads wear quick , even with just street use . They said the Braketech / Brembo I then ran on Busa was ideal for street / hills , my application , so , I went ahead and bought a nickle finish set for the Busa . I am happy with the Brembo choice , and I know it is money well spent everytime I squeeze that RCS lever , both my bikes use the GP4-RX calipers combined with 330mm ductile iron Braketechs , this setup washes off big speed with no fade or fuss . I had an axial set of 6 piston ISR , that I had purchased for that last Gixxer 11 , I owned , but did not get to fit them , so they got passed on for sale . I would of liked to try them , they are lovely machined monobloc calipers .

 

[ZeePopo]

How does the pad life work out for you , r they still the 6 individual pads for the 6 pot caliper for example ? HPS in UK sell ISR , I was talking to them back when I was checking out new calipers for replacing my Busa set of .484 Brembo . HPS recommended Brembo because they said ISR pads wear quick , even with just street use . They said the Braketech / Brembo I then ran on Busa was ideal for street / hills , my application , so , I went ahead and bought a nickle finish set for the Busa . I am happy with the Brembo choice , and I know it is money well spent everytime I squeeze that RCS lever , both my bikes use the GP4-RX calipers combined with 330mm ductile iron Braketechs , this setup washes off big speed with no fade or fuss . I had an axial set of 6 piston ISR , that I had purchased for that last Gixxer 11 , I owned , but did not get to fit them , so they got passed on for sale . I would of liked to try them , they are lovely machined monobloc calipers .

Yes the ISR comes with individual 6 pads, each caliper having its own independently moving pad. The pads they come with are the equivalent to the GPFAX from EBC. Not a long life pad by any stretch of the imagination. That's their only limitation, limits your pads choices to the single pad per pot design that are available. Sucks you weren't able to use the set you had. Nothing pops the way a set of brake and clutch masters with some nice calipers the way ISR pops. Always catches the eye.

 

[ROADTOAD1340]

Cant use axial ISR I had on the Busa bro , I sort of think my Brembo kit is popping good enough on both bikes lmao , got a pic to post of your ISR equipped machine bro , be interested to see ?
That is my Busa and the ZX14R kit .

 

[ROADTOAD1340]

Just the fact the ISR have no real pad choice makes them only good for lightweight drag application in the long term imho . With Brembo you got every manufacturer making at least one ( some 3 types ) type of pad for GP4-RX I run , and the Brembo race heritage is unquestionable , every Superbike and MotoGP grid is packed with Brembo . Pad choice must

be why you dont see ISR on the start grid very often ....
Up to date pic of ZX14R 330mm rotor front end I currently run .

 

[Bumblebee]

Heck there's a whole whack of guys out there with the stock Tokicos on them that run them on track days with zero issues...

But those Brembos sure look pretty....

It's kind of amazing how many vehicles out there have Brembo brakes, my buddy's Mustang has them....and he actually could care less what brakes he has as long as it stops...seriously, he has a very technical car but knows nothing about what makes it so technical....

 

[fallenarch]

Those ISR's look interesting. Not sure why you want 6 pads. I thought bigger pads give a better feel. Anyway, the reputation of Brembo is unimpeachable. The GP4's are amazing and as @ROADTOAD1340 says they are good enough for the best riders in the world. Anyway, here is a link if anyone is interested: Products - ISR Brakes

 

[ROADTOAD1340]

Mike ( great dude to deal with ) at Power Barn sell ISR , that is where I first optioned them , went with the .484 Brembo set from him instead back some years now .
The best bike and rider combination I like that runs ISR is Ghost Rider , all his builds feature those brake kits . Pics of turbo Gixxer 1000 .
Brembo were using the individual pad per piston up till fairly recently , my mates 998R Ducati had Brembo calipers with this setup . Must be something to it , I know the single pad like my calipers run will bite the disc from the back piston first .

 

[Mythos]

Those ISR's look interesting. Not sure why you want 6 pads. I thought bigger pads give a better feel.

I recently saw a 4 pot rear ISR caliper on Ebay.

Mike ( great dude to deal with ) at Power Barn sell ISR , that is where I first optioned them , went with the .484 Brembo set from him instead back some years now .
The best bike and rider combination I like that runs ISR is Ghost Rider , all his builds feature those brake kits . Pics of turbo Gixxer 1000 .
Brembo were using the individual pad per piston up till fairly recently , my mates 998R Ducati had Brembo calipers with this setup . Must be something to it , I know the single pad like my calipers run will bite the disc from the back piston first .
View attachment 1640691View attachment 1640692

....but Ghost Rider had a 6 pot rear. That's crazy. I must say, that looks mighty impressive though.

 

[ROADTOAD1340]

I recently saw a 4 pot rear ISR caliper on Ebay.


....but Ghost Rider had a 6 pot rear. That's crazy. I must say, that looks mighty impressive though.

That is for wheelie arresting , he is world wheelie champion , well used to be .

 

[Al Kyrie]

6 pot on the rear is a bit overkill

 

[sixpack577]

Being able to easily lock the rear to force a slide for a corner or drift would be nice though.

 

[sixpack577]

Mike ( great dude to deal with ) at Power Barn sell ISR , that is where I first optioned them , went with the .484 Brembo set from him instead back some years now .
The best bike and rider combination I like that runs ISR is Ghost Rider , all his builds feature those brake kits . Pics of turbo Gixxer 1000 .
Brembo were using the individual pad per piston up till fairly recently , my mates 998R Ducati had Brembo calipers with this setup . Must be something to it , I know the single pad like my calipers run will bite the disc from the back piston first .
View attachment 1640691View attachment 1640692

Toad, from all the pictures you post, I have Never seen a place with so many bikes with top shelf performance parts, yours included.
You live in motorcycle heavan.