2012 snapped subframe

Poncho

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Was out for a ride and snapped the sub frame on a little rock step, there was no crash, has any body else had this problem?
Thanks
 
Wow, looks like it broke on the edge of the tank, but the tank is supported by the mainframe loop with the rubber trim. Could that have been damaged by a previous crash or loop out? I've heard of one broken like that, but any good flip will probably trash an alloy subframe as well. With alloy though you have a chance of bending it back to keep moving. I ride a lot of hard stuff and my bike has taken big hits, including hitting the linkage and catapulting me off the seat and its has been fine.

Thats a big reason I want to scrap that oversized Stealth, its just a big lever waiting to break the subframe if it hits a rock on the end in a crash or even a tipover. The shorter, smaller the silencer you can get away with the better.
 
I had quite a big off today when i got a bit too confident riding over logs , i was thrown over the bars and the bike cartwheeled and the seat landed on the middle of my back , the subframe is ok , but my back is bloody killing me :eek:
 
I'm confident that your dealer will be able to replace it for you Poncho. I've heard no other reports of such damage either.
 
My dealer will take care of this ( thanks Dave) and I will report once I have the new subframe on. :)
 
This is the 5th one (that I know of) out of 140 that have broke here in the US. Two were from crash damage. These parts have been strengthened on the 2013 models.
 
Clay,

My take on this is that they are all crash damage, just not always complete failures immediately after. Crash and hit rear fender/muffler,crack/fatigue, break later. Am I correct to assume then that the '13 parts go right on the '12, and that all replacements ordered and stocked by GF will be these parts? I'm not really worried about it breaking in normal use(my a$$ will break first:eek:), but if I crash and break it it would be nice to know I can get an improved part quickly.
 
One would hope though.

I'm thinking that the rear under/inner fender is perhaps too strong. Better it flex more and even break if you slide into a tree rather than lever the subframe. Just like the old alloy fender loops on the pre '07 bikes. I'm not sweating it but should I break mine in this manner unexpectedly, I'll be modding that inner fender.

I emailed FMF asking for a basic Powercore silencer for the '12 but no reply yet.

Edit:

The other thing is you do not know if the bikes with these issues were ridden without the battery box in place. The '13 change list #6 states "reinforced plastic cross member". Not sure what that is yet but the rails look the same from the pics. What I can tell you guys is that after making that aluminum seat support that bolts across the subframe in place of the battery box, the seat has a completely different, more rigid feel to it.
 
I agree the inner fender is too hard (brittle). And I don't know about everyone else, but I sometimes crash on a dirt bike.
In 40 years of riding dirt bikes I've only broken one subframe. It was when I dropped my '79 Yamaha IT250 off a cliff in Oklahoma. I expected something to be broken after that.
 
Clay,

My take on this is that they are all crash damage, just not always complete failures immediately after. Crash and hit rear fender/muffler,crack/fatigue, break later. Am I correct to assume then that the '13 parts go right on the '12, and that all replacements ordered and stocked by GF will be these parts? I'm not really worried about it breaking in normal use(my a$$ will break first:eek:), but if I crash and break it it would be nice to know I can get an improved part quickly.

The '13 parts will fit and from here out all replacement subframe parts will be the new ones.
 
Or this, but that was not the intent. These are 1" aluminum angles, tied with .75" x .1875" bar stock. 1" Nylon spacers with poly pipe caps, shimmed to match seat base. Rear most support edges rest on cross brace. The '13 parts should do the same but I did not want to wait.
 

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Clay,

My take on this is that they are all crash damage, just not always complete failures immediately after. Crash and hit rear fender/muffler,crack/fatigue, break later. Am I correct to assume then that the '13 parts go right on the '12, and that all replacements ordered and stocked by GF will be these parts? I'm not really worried about it breaking in normal use(my a$$ will break first:eek:), but if I crash and break it it would be nice to know I can get an improved part quickly.

I was right behind him when this one let go and can tell you it was not crash related. He wheelied into a 3 foot rock face, rear suspension took most of the impact and and he came down hard on the seat with his a$$ and the sub frame failed. He never even fell over.

When you looked at the failure point you will see that there is a spring molded into that part of the sub frame and it is at that excat point the failure took place on both sides.

This is just a first model year new part failure, happens on all brands. The nice thing on this one is that GAS GAS took care of it instantly.

Looki
 
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