Forum Discussion
markchengr
Aug 17, 2019Explorer II
I run a 2007 GMC 3500 Duramax/Allison long bed crew cab with 19.5 single rear wheels carrying a Northern Lite 10-2 CD SE. It used to porpoise really bad all the time. All I know is after I installed KYB Monomax shocks, the porpoising stopped. It has never recurred. I highly recommend KYB Monomax if they make them for your rig. -Mark.
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