The Curt Class II Trailer Hitch Receiver, part # C12225, that you referenced is a confirmed fit for your 2006 Pontiac Grand Prix. This trailer hitch has capacities of 3,500 lbs gross trailer weight and 350 lbs tongue weight.
You will need to add the weight of the ATV trailer with the weight of your 2014 Yamaha Grizzly and make sure you stay under the weight limit of trailer hitch. Additionally, you should consult the owner's manual of your Grand Prix to determine what Pontiac recommended... view full answer...
I have included a link to the installation instructions for the CURT Trailer Hitch, # 12199. We have some square block spacers but not in the size used for this hitch. You will need to order the replacement hardware kit, # RHK, which will include the blocks.
Enter the hitch number and manufacturer where indicated and the correct hardware will be sent. view full answer...
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