you forgot to tell him he will need 12 inch rims in order to make it workI recommend disc brake conversions by either SuperAtv or Highlighter!
welllllllllll..going by your first post at the top ^^^..you said trx300fw to a trx300, this tells me one is 4wd, other is 2wd, soooo..unless you forgot to tell us the whole model numbers on both atvs ?, i'm going by what you posted ^^^Okay Shadetree, how do you know it is a 4wd brake system? Please enlighten me.
if these parts came off a trx300fw ?..they wont bolt up because of the backing plate. iffffffffffffff..you still have the oem backing plates from a trx300 ( which is a 2wd by the way ), you can just swap over all the brake parts from the trx300fw brake parts to your trx300 backing plate. what honda did was change the center hole, and I believe the bolt holes to mount the backing plate to the knuckles on a 2wd trx300. in case you do not know , how I know the difference between these two models ?. a trx300 is 2wd, reason: when they are a trx300 4wd ?, they will be a trx300fw !. notice the FW on the end of the model ?, that FW stands for FW=FOUR WHEEL DRIVE
the wheel cylinders should bolt right onto the backing plate. the knuckle is where you wheel attaches to when the wheel hub is attached to either the knuckle stud ( 2wd ) or front cv joint drive axle ( 4wd ).In the "ATV Parts for sale" these are listed and it looks to me that everything is there to just use on mine. Is the backing plate what the wheel cylinder attaches to? And what is the knuckle? OH GURU OF ALL THINGS QUAD, LOL.
Located this ^^^^ , i believe i read, there both 2wd.I was told that they are both between 1988 and 1992
fish, his issue is, he's trying to put 4wd front brakes ( backing plate ) on a 2wd machine. its not about 2wd from year to year on a 2wd, its about trying to put 4wd front brake parts on a 2wd front brake atv, and it wont work, least not from what I know of ??. if he just uses the 2wd backing plate, if its still on there ?, then all he has to do is swap over all the brake parts from the 4wd front brake backing plate into the 2wd front brake backing plate, call it a day.88-92 2wd use the same backing plate ---the reason I asked is I have 300s 2wd with disc conversion , but they are all 2nd and 3rd gen 2wd 93 up , never tried a 1st gen as the bolt pattern for the backing plate is much smaller than 2nd gen 2wd , It can be done , I just never did it ---- SuperATV discontinued the Rancher disc kit but I seen some Rancher 2wd disc kits a while back by an after market company on e-bay