rear brake is weak

[bcbull4]

on my xb9s my rear brake is very very weak all of a sudden. i just changed the oil & thought maybe i dripped some onto the brake, but i wiped it all down & the oil would be gone by now anyway. i checked the breke fluid & thats okay. the whole brake assembly shifts a little. the disk & pads are still thick. any ideas? thanks

[Thaloc]

My rear brake feels a bit weak at times also, I have the 08 XB12R, I seem to notice it more when its 105+ outside.

[FIDOSOL]

dunno, rear brake is only supposed to be 25%-40% of your braking power depending on your setup but still, I'd have that looked at...My brakes are fine, I checked them on the way home, right behind this asshole in a big truck that doesn't use his 15million freakin' mirrors.

[Thaloc]

My breaks are good, love this bike in the almost 3 months iv had it iv only locked the back tire up twice.

[Bordsnbikes]

Bcbull4, if you dripped oil on em it's not very likely you got it off. Oil impregnates brakes really bad and is hard/impossible to get out of them. Take them off and spray them with brake cleaner, that'll be your best chance. It might still be a good idea to replace them though. Have you overheated them really bad recently? That can boil your fluid and get air in it, or just plain ass up the pads.

[bcbull4]

no i havent overheated them, but i tightened up all the connections last night, seems better. im just not sure b/c i dont hardly use it, i do highway driving mostly & use the engine to help brake when needed. i just know i have locked that back brake a few times, & now it seems softer, i'll take it apart & clean/inspect, thanks.