1999 Honda trax 300 4x2 disc brake conversion - Honda ATV Forum
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post #1 of 11 (permalink) Old 06-21-2018, 12:12 PM Thread Starter
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1999 Honda trax 300 4x2 disc brake conversion

I just purchased front disc brake conversion for my 1999 Honda trax 300 4x2 from SUPERATV. The discreption shows that it fits my atv. However, it seems that I need hubs to make this work. Problem SUPERSTV can't tell me where to find them or what hubs will work. Can someone help me with this problem?
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post #2 of 11 (permalink) Old 06-21-2018, 12:52 PM
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SATV doesn't sell a kit for a 2wd trx300. Only the 4x4 that's why you don't have the hubs.

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post #3 of 11 (permalink) Old 06-21-2018, 12:55 PM
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I would send that kit back to SuperATV , and get credit on it , they only sell 4x4 300 kits now days , the kit you need is discontinued from them , maybe you can find a hub that will work for you I don't know , I would think by now if there was a hub out there some one would have found it , if I were to start looking for a hub , I would look at a 350 Rancher 2x4 hub as that is the kit I used to put disc on a 300 2wd , here is a link to a kit that would work for you , you would still need shims and to make a 2 new brackets for the caliper mounts , the price went up another $49 since I last looked at it a month or more back , I was very lucky to have bought kits from Super ATV at $200 a few years back



https://www.ebay.com/itm/HONDA-RANCH...nd!70471!US!-1
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post #4 of 11 (permalink) Old 06-21-2018, 01:11 PM
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In the pic , the gold mount is for the Rancher 350 2x4 , it has a offset at the end , you need to make a plate exactly the same except flat , 5/16 plate would be perfect and not need any shims , 1/4 plate will work with some shims from McMaster Carr is where I got them from
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Last edited by fishfiles; 06-21-2018 at 01:15 PM.
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post #5 of 11 (permalink) Old 06-21-2018, 01:22 PM
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When I said exactly the same , I meant the center of the spindle to center of holes for bolts that bolt the caliper to the mount --------------- but you do have to make the mounting circle to the spindle to fit the 300 2wd and re-index it


for the 1st gen 300 2wd's , if you noticed how much smaller the pattern is for the 2wd black plate ( 2nd gen ) compared to the 4wd gold plate , there is a big difference , the 1st gen 300 2wd is even smaller a pattern and there is barely enough to get the bolts head covered
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post #6 of 11 (permalink) Old 06-21-2018, 03:25 PM Thread Starter
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Is the wheel bolt pattern for the kit a 4x110?
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post #7 of 11 (permalink) Old 06-21-2018, 03:38 PM
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Yes , 4-110 and you need to have 12 inch rims to clear the calipers , aluminum rims are OK even though some kits say they are not OK
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post #8 of 11 (permalink) Old 06-21-2018, 03:39 PM
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I have seen people take the brake drum and cut it to resemble a hub and go from there
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post #9 of 11 (permalink) Old 06-21-2018, 04:28 PM Thread Starter
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The 5/16 plate is thick enough for the re-indexing for the bolts? And making this plate is the only alteration that needs to be done to make this conversion work?
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post #10 of 11 (permalink) Old 06-21-2018, 05:07 PM
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if you were to buy the kit I hyperlinked and use 5/16 plate you should be good to go , 5/16 plate is theoretical as I have never used 5/16 plate , I used 1/4 inch plate and 1/16 of shims to make the rotor ride right in the middle of the brake pads , 1/4 and 1/16 is 5/16 ---
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