Trx300fw Rear Axle Rebuild - Honda ATV Forum
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post #1 of 7 (permalink) Old 10-17-2011, 10:14 PM Thread Starter
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Trx300fw Rear Axle Rebuild

Hi everybody. I've got a question for those of you who do mods to your ATV's. My TRX300 has a busted rear axle, would it be better to rebuild the rear diff and buy a new axle shaft, or buy a complete used axle assembly from a Rancher 350 and fab it to fit the 300? I have access to a shop, with plenty of welders and tools. And I'm pretty sure the older Ranchers have the same diff case and gear ratio as my 300, but they're a lot more durable.
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post #2 of 7 (permalink) Old 10-17-2011, 10:24 PM
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I don't think the Rancher 350 has the same gear ratio as the 300, but the old '85-'87 Fourtrax 250 and the '86-'89 Fourtrax/Foreman 350 does.




Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!

You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.

Last edited by Helmut; 10-17-2011 at 10:39 PM.
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post #3 of 7 (permalink) Old 10-17-2011, 10:38 PM Thread Starter
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You're right, it's the 350 Foreman rear axle. How much would it cost to get a complete Foreman rear axle? Would it be a worthwhile project?
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post #4 of 7 (permalink) Old 10-17-2011, 10:43 PM
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I don't know, I've never done the swap myself, but I like the idea. We have a member (jemmy3) that swapped a Fourtrax 250 rear end in his 300 and there's a lot of guys over on the High Lifter forums that have used both the 250 and 350 rear ends.




Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!

You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
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post #5 of 7 (permalink) Old 10-17-2011, 10:44 PM
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Here's the link to jemmy3's thread where he used the 250 rear end.

https://www.hondaatvforums.net/forums...300-4trax.html




Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!

You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
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post #6 of 7 (permalink) Old 10-17-2011, 10:57 PM Thread Starter
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Are there any forum members around Sacramento with a junker 250 or axle they'd like to sell me?

Last edited by ubernoob; 10-17-2011 at 11:04 PM.
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post #7 of 7 (permalink) Old 10-19-2011, 11:35 PM Thread Starter
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