For 2007 and newer Yamaha Grizzly use the Tri-Mount part # 34269 because there is not enough space on the bar to accommodate the 34252 mount kit. 

Features:

• This mount kit works with the Star Series and Trail Star handguards (not the Sentinel).  
• Only 1/2" of space is needed near your handlebar grips to accomodate the mounting brackets. 
• Unique strap design allows your fit the mounting bracket behind master cylinders and over or under brake and clutch levers. 
• All parts are aluminum for lightweight strength and durability.