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Discussion Starter #1
Looking to put 27×10×12 front 27x12x12 rear kenda executioner tires and a dalton clutch kit on a stock 2003 grizzly 660. Does this sound like it would work? Will the tires fit?I hear these tires are heavy,will they break my axles? I like these tires cause I hear they don't wear out quick. Please let me know what you guys think. I could really use the help.
 

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Looking to put 27×10×12 front 27x12x12 rear kenda executioner tires and a dalton clutch kit on a stock 2003 grizzly 660. Does this sound like it would work? Will the tires fit?I hear these tires are heavy,will they break my axles? I like these tires cause I hear they don't wear out quick. Please let me know what you guys think. I could really use the help.
I don't have a definite answer, but I bet plenty of the guys will. I would guess that those will be fine from what I have read, but I have no real world experience with them. There are quite a few guys on this forum that have 27" and 28" tires on the 700 grizzly's with no problems. I don't know about the tire clearance difference the 700 and the 660. I'm still saving my pennies for my own tire and wheel upgrade!
 

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Yes they will fit and rob lil bit of power. Don't get a kit, look in the CVT section, there are part numbers for what you need. Cheaper as well.
 
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Discussion Starter #4
Thanks for the information, will I have a problem breaking axles? So would I need a shim and a spring or weights shim and spring? Would the dalton kit work? It comes with weights and a spring. Would I need a new extreme belt or would the old one be ok? I know alot of questions! I'm just sort of confused. Just joined this group and already love it. Thanks all
 

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Kenda named The Executioner's correctly. My buddy bought a 660 with 27in Executioner's. The tires are an extremely aggressive tread and he's a very aggressive Rider. He went through several axles before he sold it. I installed a "61" axle for him that he bought off eBay. It lasted less than 1 mile. He was the king of the mud holes for a short while.
 

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The 2003 Grizzly had 2 different axles. Yamaha did a mid-year change. This was because the early models had extremely weak axle bars that would break easily.

Even if you do break an axle, there is several options for the Grizzly 660 that are fairly cheap and offer much stronger than stock axles. Parts Discounter on eBay has excellent, strong axles. They hold up to my 30" tires.

Do not buy a whole clutch kit. They are over priced and come with things you do not need. All you need as a starting point is shims and secondary spring. If you feel you need more after, then clutch machining is next.
Use only a factory belt. They are simply the best, most durable belt. In most cases, your original belt will be fine.
 

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Discussion Starter #8
Im not a real aggressive rider, I do go in alot of medium mud holes, hopefully I won't break axles. So for the shim and spring I have been reading a 1.5mm shimming would be good? And what spring would be good? I see they are rated by color?
 

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Im not a real aggressive rider, I do go in alot of medium mud holes, hopefully I won't break axles. So for the shim and spring I have been reading a 1.5mm shimming would be good? And what spring would be good? I see they are rated by color?
Buy a shim kit on eBay that will give you the option for 2mm of shim. Your machine will probabkh take more than the newer ones. A purple spring will probably do what you need it to do based on your described riding style. Not sure what a medium mud hole is to you but if it slips, you can always go heavier. Mine hasn't. I don't go looking for mud holes, but I don't drive around them much either.
 

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I had 25" on my 2007 grizzly 450 for 6 years until I sold it. Good all around tire . Very good in the snow. I plowed that Atv for 7 years. Still a ton of tread left.
Mudinmyblood forum has a tire weight chart. Executioners 27x10.00-12 31.04 lb(rear tire)
Believe it or not, most tires in the 27" and up begin at this weight or at least it's low average weight. All these guys with 28-30" tires are running 40lbs.
 

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Discussion Starter #11
Ok bear, do you have 2mm shim with purple on your machine? What size and year machine you have? What is the next heavier spring up from purple?
 

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Discussion Starter #12
So I'm thinking of doing the 1.5mm shim,purple spring and since I am in there changing the weights. What would be good for weights?
 
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