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Joined
2/15/2018
Location
AU
Many people out there seeing this? (pics attached)
2023 kx450, 30 hours easy vet mx riding, Installed, torqued and maintained as per instructions. FCP tried every pathetic excuse in the book not to take any responsibility for a Cleary flawed part, then resorted to personal insults rather than offering a warranty replacement....
“You want less rigidity? Here you go!”
Joking aside. I cracked a set of stock KTM 125 mounts in the same exact way. Everything was torqued to spec, no hard flat landings. No clue how it happened.
I wonder what type of alloy are they using on these mounts?
They’d be wise to warranty that structural failure.
The Shop
Free shipping: VITALMX
Luxon 4-Post Bar Mounts
$189.95 - $239.95
If it was a design flaw all KX hangers would be breaking. If it was a material issue, which I am going to say it is not, all would be breaking. My guess its a misalignment issue specific to your bike. Meaning once you torque the two top bolts there is a slight gap at the cylinder. When you tighten the bottom bolt you are drawing it in. This would put some, although very small, pressure where it broke.
Could you feel the difference between these & the stock mounts?
If there is/was a void or inclusion in that piece of aluminum, that’s a material defect causing the failure.
If the part saw to much heat during the machining process or if it was not heat treated correctly (how you heat, how much heat, how it’s quenched/not quenched…etc.) or if the mounting surfaces of the mount wasn’t correctly finished to match the cylinder head’s surface or if there was a mis-machined blend-radius…etc., etc., etc. …all of which are manufacturing and process issues…again…that’s still “defective”.
In all fairness to FCP, they’ve made a lot of these and I haven’t seen this before; so, I’d roll with “shit happens” and I’d send the dude a new set…yes, “set”.
It could also be the stress concentration milled into the part right where it broke.
Beat me to it…
I had to purchase an ‘updated’ bracket from them after mine broke on my KTM. They went from aluminum to steel which shouldn’t break now, but surprised I had to re-purchase for the fix
What year is the bike ?
23
It probably costs them $10 to make that and it would have saved this thread from being made and hundreds of people seeing one of those mounts broken.
Those mounts are likely being sprung in to nip up. Manufacturing/design fail.
How is an aftermarket steel one better than an OEM aluminium one?
Genuine question, not being a dick 👍
Steel, say 4140 or 4130, has higher strength, is more ductile, and much more fatigue resistant.
With careful design it may be no heavier.
No alignment or gap or pulling issues with these or the stock mounts.
Pit Row
That made my day.
Hey Sandman, with all due respect, how can anyone 'feel' an engine mount? I see all this 'flex' stuff, but, belive none of it is noticeable in any way. For a start, Knobs on the tires, large flex, the tire itself, flex, up to an inch? Suspension, over 12 inches, your knees, over 12 inches. Even the soil we ride on, at times has 'give'. How is anyone ever going to notice .001mm of movement in an engine mount? Again, honest question, I don't see these things make a lick of difference in handling. Someone please fill me in, I don't get it. It makes me put chips up my nose.
What were the excuses or personal insults?
That mount looks like it has sprung to me.
The frame part has moved in relation to the engine section.
It's hard to tell but there does not appear to be a stress relief fillet or radius on either the bolt lug or the chamfer on the bracket.
The rolling direction of the plate (the grain) in relation to the loads, is another, small, consideration.
Its in the same vane as " I run 103.5mm sag "
What I”m asking is : could he feel the difference between the stock & FCP mounts in regards to the handling of the chassis…you make my point exactly… you would have to be a very precise and sensitive test rider to feel the difference…. Hence… chalk it up to a learning experience for buying something you never needed in the first place….
Of all the bikes to try aftermarket engine mounts the Kawasaki would probably be my last choice to try them on. It seems to have the most comfortable chassis flex of them all and the least need for more flex.
Who cares if the OP can tell the difference...Not what the thread is about. It's about shitty customer service.
Want vs. need is irrelevant to it breaking.
On my RMZ I've noticed that the aftermarket engine mounts helpers reduce a bunch of vibration in the bars compared to the stock one. I can't notice any frame flex or anything, but if the vibration reduction helps keep me from getting arm pump as easily then they did their job for me
Wow! I was looking at these engine mounts, but now I'm suspicious about their lack of customer support if one of them fails. FCP better make this right, because this kind of publicity can kill a company.
I though I could feel a small difference in some conditions, could have been a placebo effect, certainly wasn’t worth the price.
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