im about to get some new rollers, which are the best brand/make to get, its for a MINARELLI horizontal engine
ive used malossi..Doppler..pm tuning..Top racing.. The 16x13 speedfight rollers are shit...ive seen flats appear after a couple of hours use on brand new rollers... But the 19x15.5 Runner rollers have excellent wear characteristics...ive pulled rollers out after months of use to find they are still in good shape...
my rollers were still like new without any flats. ive done at least 10000kms on them rollers, and i dont even know how long they were in the bike before i brought it the thing is the metal insert started to come out leaving bits of metal everywhere imp:
i prefer to get standard everything as its easier it depends on the bike. if its standard, standard rollers are best but if its tuned then standard weight are no good so you need to buy malossi or whatever rollers they are in my 172 i had 12.5 gram standard make rollers are they were flat in a week