All Balls 51-1007 Tie Rod Upgrade Kit Replacement Ends 51-1007 for Yamaha Applications (99-12),1 Pack Tie rod housings have been strengthened in critical areas Tie rod upgrade kits feature tie Rods that are manufactured from seamless Steel tubing and heavy duty Rods Upgrade ATVs from the failure-prone 10 mm tie rod assemblies to the wide open heavy-duty 12 mm tie rod assemblies