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Discussion Starter #1 (Edited by Moderator)
Hey guy I'm new to this site. So bare with me. I'm wondering if anyone has issues breaking axles. This is my second ride on a new to me 04 660 . Iv ridin it twice and have broke two slasher axles both on the left side. It has aggressive 27in silver back tires.
 

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Hey Grantos, does the 660 have a lift on it? if so and if its a big one that wasn't installed properly that could add a lot of extra stress to the axle. i would say to go through and look at ll of the suspension components and see if any thing looks or seems out of place/bent/broken or just not right. pictures always help when explaining things or looking at something so feel free to add some so the guys can know what exactly you are looking at.
 

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Discussion Starter #3
It has a 2 inch lift. When I changed out the last axle I noticed the. Knuckle bushings and pins are worm. And rear stabilizer bushings are worn as well. I'm going to get those replaced in the near future. I'm looking into getting a gorilla axle as a replacement. Has anyone had any experience with them.
 

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it might not be a bad idea to put the grizz on stands, then go through and loosen up the lift brackets, maybe see if one of them moves or might be tweaked, its most likely not an issue but if the brackets were installed very poorly and if are far out of alignment they could be adding additional stress to the suspension. and for the gorilla axles keep in mind if you install some super heavy duty CV axles because they are breaking then that is going to put the Diff and driveshaft next in line for the weak links on the drive system. just an idea to keep in mind.
 
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We first need to answer the question of whether you have a problem or not. I say this because you have a recipe to break axles with your setup (heavy, big lug full dedicated mud tires and a lift kit).
When you broke the axles, what conditions did it happen in? Were you in a bind or a condition requiring lots of torque? Or were you just riding on a open trail?

Where did the axle break? At the cup or in the bar?
 
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Discussion Starter #6
Yes i was in a bind slightly highcentered going up hill. And ya everything torqued up to get out of it. And it broke in the cup. It looks like only the front has spacer blocks for a lift not the rear.
 

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Welcome to GC.
 

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eeek. If you're plowing through axles this quickly and can't figure out why, may be worth having a few aftermarket spares on hand - Rocky Mtn and ATV are both good options. Hope you figure out what's going on first and foremost though.
 

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Discussion Starter #9
Ya I'm just thinking it's the tires and lift. So I'm going to throw on a gorilla axle since they are made for big tires and lifts. I'll try it out hope for the best.
 

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Ya I'm just thinking it's the tires and lift. So I'm going to throw on a gorilla axle since they are made for big tires and lifts. I'll try it out hope for the best.
Look at the Niche brand axles on amazon and ebay. I trashed an axle on my 660 with 28's, put these niche ones on and did a rear knuckle flip. I've got about 200km on them now with no issues. They are much beefier than stock.

Sent from my SAMSUNG-SM-G870A using Tapatalk
 

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Ya I'm just thinking it's the tires and lift. So I'm going to throw on a gorilla axle since they are made for big tires and lifts. I'll try it out hope for the best.
Gorilla axles are good axles. Great axles actually...but they are way over-priced.
Before you spent that kind of money, check out the Niche Axles, like has already mentioned. The are the same size as Gorilla axles, and made of the same material.....but are bargain priced comparatively. I have all 4 in my Grizzly, running 30" tires with rear hubs flipped (3/4" lift), and have not broke one yet. Been almost 5 years now.
 

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What is a knuckle flip and hub flip I have a good idea but just wanna make sure lol.
Knuckle or hub flip....means the same thing in this instance.
You can only do it on the rear. The rear knuckles are off centered. Remove the 2 bolts holding the knuckle to the upper and lower controls arms. Flip or turn the hub over. Reassemble everything. You now have 3/4" of free lift. Not recommended on stock axles.
 
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