@coventry_eagle@chiroshi
Hose design is where you lose modulation when you mix and match. If I remember right, Bh59 is a small bore pressure hose, wheras the BH90 is a larger/volume bore, hence either loss of modulation or bite if you mix and match. Old saint's/Zee/XT 4 pot stuff used to be fitted with volume hoses.
Pretty sure bh90 is more current and is being used across the range from the top end XTR/Saints to the lower Deore stuff. This is from experience as I've not come across BH59 in the 3 disc setups I've encountered - Deore, SLX and Saint.
Higher end shimano stuff has ceramic pistons no?
@coventry_eagle @chiroshi
Hose design is where you lose modulation when you mix and match. If I remember right, Bh59 is a small bore pressure hose, wheras the BH90 is a larger/volume bore, hence either loss of modulation or bite if you mix and match. Old saint's/Zee/XT 4 pot stuff used to be fitted with volume hoses.