Anybody got them fitted to their blade? Which ones, where from, how much etc? Seen some on flea bay M4 monoblocks £585 new, everyone else seems to be selling them at £800 +/- confused too good to be true?
You should be able to get some M4s for 600 there is no catch and they are a very good upgrade, what master and discs you thinking of, Ive never run M4s on stock masters but they work well on stock discs.
Thanks Arthur. Will look to upgrade everything to rcs m/c and brembo discs. what's the difference between the M4's and the HPK's?
The HPK callipers are shockingly good, tbh they go to GP extremes! and extremes of your money! big time!! Depending on what you want to achieve and require? Monoblocks are defo the way to go but having said that Ive had people say that M4s (cast monoblock) are awesome but GP4RXs (two part CNC calliper, more ridged) give better feel...? I have rode many times with both and run GP4RXs myself, M4s BITE and they BITE hard and offer huge stopping power and value for money! With the RCS and M4s Id say you would be VERY happy, next step up could well be something like GP4s even though they are a two part calliper they are more ridged as made from billet after that the sky's the limit, the HPK big guns are just unbelievably POWERFUL and IMO WAY over what I could even begin to try and test....lol Oh also don't be sold on piston size, Brembo spend YEARS developing callipers and I guess studying and testing how piston size, cavity design and fluid dynamics come into play with callipers let along masters! In other words just coz it has big pistons does not mean they off more power, however some of the top spec callipers have HUGE pistons!
Hi Arthur, thanks for all the info may try the M4's to start with then due to costs, CapriMoto do some bloody good prices just been having a look!!
Yeah they are good, also they are a MINE of info too mate so ask a question to them if you have any, trust me they know there stuff! For me the main points are, monoblocks - ace calipers with dust seals for the road but hard to service and get seals for other than sending calipers for service!, GP4RX better IMO use the same pad shape so loads of compounds easy to service as two part also with dust seals for the road, HPK kits again are ace but CHECK the specs as some like the GP4RRs do not have dust seals and are mainly track only! M and P etc also have some good deals on some HPK kits. As for discs clubmans are ace but T Drive are another world! If you want budget best RCS 19 18x20 with M4s and T Drive discs.. Hel lines job done! HPK rear calliper also is A1 even with stock rear master! It's endless the pros and cons of the types of calipers but Cast M4 monoblocks are cheap for what you get back, two part billet CNC GP4s are better imo and near as ridged as a billet monoblocks but MUCH cheaper after that its billet big Ti piston monoblocks at massive money! 5k for a basic GP spec caliper! In there also is the range of HPK calipers for road, race and endurance racing......and on and on it goes... Oh an Im no expert by the way so don't just take my word for it. Oh and one last this they have not long released the black GP4RXs (.484) they are cheaper than the nickel plated callipers....price them if you can... edit: just looked and they are priced more...confusing as they were cheaper....?
