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ok i have kimpex carb mounting flanges with the boost bottle ends out the top of the flange for my 99 rmk 700. i just bought new ones this last november and put them on, because my old ones were cracked and i hear that can cause lots of damage if there is air leaks. So on these new ones i just got last november i used them this winter from december to about the 1st of march and i was looking at it the other day and see that they are cracking in the boost bottle end hoses and on the main flange it self right after the carb. so what am i doing wrong to have them crack and leak already within 5 months can keeping it in the cold be to hard on the rubber, or does it get to warm, i know i have a lower idling snowmobile so my engine kind shakes a little more than others can to much vibration be bad for them or what causes them to crack? thanks for all help!! Im really puzzled
 

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kimpex carb flanges are JUNK. get the polaris ones and youll be fine
 
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