Gear reduction - Honda ATV Forum
Gear Reductions Discuss and post information on gear reductions.

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post #1 of 7 (permalink) Old 11-05-2018, 12:25 AM Thread Starter
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Gear reduction

I have a 2011 Honda rancher 420 on 27” tires and when I get down in deep soupy mud it bogs and I was considering 25% gear reduction and more aggressive tires, I’m looking for info, pros and cons and any general information about instillation, thank you!
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post #2 of 7 (permalink) Old 11-05-2018, 12:38 AM
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Moved your thread to the gear reduction section :-)

Anywhere in the region of 25 to 30% will be fine on an aggressive 27” tyre. You shouldn’t loose to much top end and it will give you that low down power back that you loose with a larger tyre.

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post #3 of 7 (permalink) Old 11-05-2018, 04:51 AM
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You can run 28" Outlaw 2's on a 420 without gear reduction , we ride with one , it spins the tires throwing rooster tails
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post #4 of 7 (permalink) Old 11-07-2018, 09:27 AM Thread Starter
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I thought the gear reduction was only available in 25 and 69%
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post #5 of 7 (permalink) Old 11-07-2018, 10:45 AM
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Quote:
Originally Posted by Scott4700 View Post
I thought the gear reduction was only available in 25 and 69%
Not sure for a rancher, search this sub section, I’m sure I posted a photo with all available GR’s made by Jeremy Lee at reduction boss.

98 300 Fourtrax 4x4

Custom built mud bike - Now sold.

2004 Foreman 450S

Fully overhauled (nut & bolt rebuild), 2” lift kit, 28” mega mayhems, ITP delta rims, ES floorboards, 22” LED lightbar, Pyle Bluetooth sound system.
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post #6 of 7 (permalink) Old 11-08-2018, 07:26 AM
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Reduction Boss makes 6-8 different sizes of reductions for the 420.
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2016 Honda Pioneer 1000-5 Deluxe White
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2008 Honda Rancher 420 4x4
Money Pit......soon to be greatness

1998 Honda Trx300 4x4
317 motor, 54% Gear Reduction, EBC Clutches, Big Red Rear End, 2.75" Stretch, 350D Clutch Cover, Oil Cooler, Foreman 450 Clutch, Disc Brake Kit, 29.5 OG Laws

1985 Honda Big Red 250 ATC
18% Reduction, 28" EDL

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19 - Honda Trx300 4x4
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post #7 of 7 (permalink) Old 11-08-2018, 11:47 AM
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There's a 14.5/ 15.5 available from all the GR builders. A stock 420 should be able to turn 27's stock, although heavy 27's might lug you a little bit.
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