all scooters are different and require a adapter kit for the fork, for the rattlers these have to be custom made and is a right pig of a job, for bubus and blurs its alot simpler with some off the shelf adapters availible for between $30-40 depending on size of disc, you cna keep standard size or go upto 230mm.
ok first and cheapest one is the brembo copys, these are of reasonably good quality but are not the same as the original brembos.
why bother you ask?
well its only under $60 for the caliper and is much better than any standard scooter brake (excluding the big boy scoots of course!)
they come either with brembo logo or without

Heres another brembo copy but made by one of the top tuner brands in taiwan RPM, these are identical to the brembo in everyway but design and offer a much higher build quality than the 'knock offs' with a price.... $90

next up is the RPM radial 4pot, these things are tiny, i mean they are so cute you will probably fall in love with one and want it. they weigh almost nothing and offer amazing performance for the size.
best bit is the price $100.

This is RPM's biggest brake, its again a 4 pot radial but its HUGE, around twice the size of the dinky radial above, rumour on the street is that these are identical to the stupid expensive radial brembos, weigh just under a kilo and cost $130ish.

how about a yamaha replica, these arent 'knock offs' as such as the quality is very high, they are very small like the tiny rpm and offer similar performance.
they do cost more though as the yamaha boys love them, around $135.
also fitting kits are very hard to come by for anything but a yamaha, but anythings possible


This is my brake, its like a radial but its not.. its made by the best of the tuner brands RRGS, they make the best suspension and brake kits fullstop.
i can honestly say this brake is amazing with very good modulation, plus it looks super cool in polished alloy.
its similar in size to the tiny RPM and weighs little less which is why i bought her.
price is a bit higher at $125 but its worth it.


i can get these with the right adapter for a rattler 110 no problem as mine can be used as a jig!
ok there are 2 more rrgs calipers, they are both very similar in looks and only differing in size,weight and power.
this is the medium sized one, similar to a brembo radial but lighter and smaller.
price is $140
the larger version is only $10 more.

lastly the radial brembos, i can get genuine ones at $230 and replicas at $140, i dont reccomend the 'replicas' as the paint finish sucks compared to the original.

ok all those prices are for the calipers only, 220mm discs in many different designs (wavy/non wavy, floating/non floating) cost around $80-$110.
so for a RPM diddy radial ($100) plus the adapter ($30) and depending if you are upgrading to a larger disc ($100) or keeping original ($0).
postage as a worst case would be $60 sent EMS express, cheapest being $30.
one problem i have is that i dont have paypal and refuse to use them again, its a long story and have typed about it so many times in the past that i dont want to do it again!.
hope this is helpfull.