Review on 🚜 HDX Hitch: Enhanced Replacement for John Deere TCB11531 BM17801 Gator Z425 Z435 Z445 Z465 Z510 Z520 Z535 Z540 Z710 Z720 Z810 Z820 Z830 Z840 Z850 Z860 Z910 Z915 Z920 Z925 Z930 Z950 Z960 Z970 717 727 737 757 by Henry Johnston

I wish I had read more reviews. The screws attached are the WRONG SIZE for the Z9xx mower. As many wiser reviewers have pointed out, the 1/2 bolts are too large to use on a threaded rear guard. Some reviewers mention 12mm, others suggest 7/16. I've tried both and would recommend 7/16 for a tight fit that doesn't need lock washers. Too much play when using 12mm. I was afraid it would break if I tightened it. This hitch is quite expensive considering all the fasteners will not fit the Z9xx mowers listed.